{"id":89384,"date":"2008-04-17T08:59:00","date_gmt":"2008-04-17T08:59:00","guid":{"rendered":"http:\/\/weblogs.madrimasd.org\/\/universo\/archive\/2008\/04\/17\/89384.aspx"},"modified":"2010-01-22T03:47:17","modified_gmt":"2010-01-22T02:47:17","slug":"degradacion-y-conservacion-de-suelos-en-argentina","status":"publish","type":"post","link":"https:\/\/www.madrimasd.org\/blogs\/universo\/2008\/04\/17\/89384","title":{"rendered":"Degradaci\u00f3n y Conservaci\u00f3n de Suelos en Argentina"},"content":{"rendered":"<p><P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; mso-layout-grid-align: none; mso-pagination: none\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 10pt; COLOR: green; LINE-HEIGHT: 150%; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">Gustavo Moscatelli y Mabel Susana Pazos <I>ex \u00e6quo<\/I> <o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">A mediados de los \u00b470 debido a las demandas crecientes de alimentos y<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> mejores precios agr\u00edcolas, se comenz\u00f3 a aplicar <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">mayor presi\u00f3n sobre las tierras agr\u00edcolas y<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> a\u00fan en las tierras <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">marginales<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Estas \u00faltimas se utilizaron descuidadamente respecto de los principios de sustentabilidad, los que de hecho se desarrollaron posteriormente, as\u00ed generando <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">\u201c\u00e1reas de conflicto\u201d respecto de la verdadera aptitud y uso de la tierra tradicional<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. <SPAN style=\"COLOR: black\">Se logr\u00f3 un <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">incremento en la producci\u00f3n a trav\u00e9s de<\/SPAN><\/B><SPAN style=\"COLOR: black\"> la aplicaci\u00f3n de tecnolog\u00eda con insumos como por ejemplo <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">fertilizantes, biocidas y maquinaria pesada<\/SPAN><\/B><SPAN style=\"COLOR: black\">. El mensaje de los agr\u00f3nomos y cient\u00edficos siempre fue el de armonizar una producci\u00f3n rentable con la preservaci\u00f3n de los recursos, pero <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">el inter\u00e9s de corto plazo fue dif\u00edcil de superar con<\/SPAN><\/B><SPAN style=\"COLOR: black\"> la consecuencia de un lento pero implacable <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">deterioro del suelo<\/SPAN><\/B><SPAN style=\"COLOR: black\">. De alguna manera, <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">la aparente<\/SPAN><\/B><SPAN style=\"COLOR: black\"> eterna <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">riqueza de los recursos naturales de la Pampa H\u00fameda junto co<\/SPAN><\/B><SPAN style=\"COLOR: black\">n la utilizaci\u00f3n de nuevas variedades gen\u00e9ticas, fertilizaci\u00f3n y riego <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"COLOR: #3366ff\">enmascararon la disminuci\u00f3n de la capacidad productiva del suelo<\/SPAN><\/B><SPAN style=\"COLOR: black\"> por un per\u00edodo relativamente prolongado.<\/SPAN><SPAN style=\"COLOR: #007f00\"><o:p><\/o:p><\/SPAN><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<IMG height=269 src=\"\/blogs\/universo\/wp-content\/blogs.dir\/42\/files\/370\/o_Argentina%20Degradaci\u00f3n%20Soc%20Rural%20Arg.jpg\" width=391><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.ruralarg.org.ar\/web\/notas.php?id=2681\"><FONT color=#800080>Los Valles Aridos del Noroeste y las Sierras Secas Centrales <o:p><\/o:p><\/FONT><\/A><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN class=MsoHyperlink><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.ruralarg.org.ar\/web\/notas.php?id=2681\"><FONT color=#800080>(15.000.000 de ha),\u00e1reas monta\u00f1osas con sistemas agr\u00edcolas <o:p><\/o:p><\/FONT><\/A><\/SPAN><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN class=MsoHyperlink><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.ruralarg.org.ar\/web\/notas.php?id=2681\"><FONT color=#800080>bajo riego y ganader\u00eda extensiva en los faldeos monta\u00f1osos, <o:p><\/o:p><\/FONT><\/A><\/SPAN><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN class=MsoHyperlink><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.ruralarg.org.ar\/web\/notas.php?id=2681\"><FONT color=#800080>presentan problemas de erosi\u00f3n en las cuencas hidrogr\u00e1ficas<o:p><\/o:p><\/FONT><\/A><\/SPAN><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN class=MsoHyperlink><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.ruralarg.org.ar\/web\/notas.php?id=2681\"><FONT color=#800080>por sobrepastoreo, deforestaci\u00f3n e incendios. Fuente: Sociedad<o:p><\/o:p><\/FONT><\/A><\/SPAN><\/SPAN><\/P><SPAN class=MsoHyperlink><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: ES; mso-fareast-font-family: 'Times New Roman'; mso-fareast-language: ES; mso-bidi-language: AR-SA\"><A href=\"http:\/\/www.ruralarg.org.ar\/web\/notas.php?id=2681\"><FONT color=#800080>Rural Argentina<\/FONT><\/A><\/SPAN><\/SPAN><!--more--><P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B><SPAN style=\"FONT-SIZE: 10pt; COLOR: green; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Deterioro del suelo en n\u00fameros<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> <o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Datos reportados por FECIC (<\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">1988<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">) <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">sobre 219 millones de hect\u00e1reas relevadas<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, correspondientes a 17 provincias de las 23 <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">(78% de la superficie del pa\u00eds)<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> indican que <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">alrededor de 21.400.000 ha est\u00e1n afectadas por erosi\u00f3n h\u00eddrica en grado moderado y severo<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Una estimaci\u00f3n hecha por INTA (Musto, 1979) indica un incremento de 4.400.000 ha erosionadas en grado severo.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Actualmente se acepta que <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">un total de 60.000.000 ha est\u00e1n afectadas por erosi\u00f3n h\u00eddrica o e\u00f3lica <\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">en diferentes grados. <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">La erosi\u00f3n e\u00f3lica<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> se expresa principalmente <\/SPAN><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">en <B style=\"mso-bidi-font-weight: normal\">regiones \u00e1ridas y semi\u00e1ridas como Patagonia y la Regi\u00f3n Pampeana Semi\u00e1rida<\/B><\/SPAN><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, mientras que la erosi\u00f3n h\u00eddrica afecta principalmente <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">las \u00e1reas h\u00famedas como la Regi\u00f3n Pampeana H\u00fameda y la Mesopotamia (NE del pa\u00eds)<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">El <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">INTA<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> hizo una evaluaci\u00f3n de <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">la degradaci\u00f3n de la tierra para el per\u00edodo 1985 hasta el presente y considerando 5.000.000 ha en el \u00e1rea central de producci\u00f3n de granos<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> (Michelena, et al., 1989) con las conclusiones que se muestran en la <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Fig. 5<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: 'Courier New'\"><o:p>&nbsp;<IMG style=\"WIDTH: 371px; HEIGHT: 290px\" height=367 src=\"\/blogs\/universo\/wp-content\/blogs.dir\/42\/files\/370\/o_Argentina55.png\" width=511><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: 'Courier New'\"><o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN style=\"FONT-SIZE: 8pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'\">Figura 5 \u2013 P\u00e9rdida en porcentaje de MOS (materia org\u00e1nica del suelo), <o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN style=\"FONT-SIZE: 8pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'\">P, N y estructura, bajo rotaci\u00f3n agricultura-ganader\u00eda y agricultura<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN style=\"FONT-SIZE: 8pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'\">continua. El nivel en suelos no cultivados debe considerarse 0%.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Otras marcas de degradaci\u00f3n del suelo incluyen 1.280.000 ha con p\u00e9rdida parcial a total del horizonte superficial y<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> un incremento en la <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">acidez <\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">del suelo que depende de la intensidad de uso del suelo. <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">El pH disminuye 0.4 en \u00e1reas bajo rotaci\u00f3n agricultura-ganader\u00eda y 0.9 bajo agricultura continua<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, con respecto a las tierras no cultivadas.<\/SPAN><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">El desbalance de materia org\u00e1nica es causado por degradaci\u00f3n f\u00edsica y qu\u00edmica de la tierra, particularmente bajo<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> agricultura continua tradicional y doble cultivo trigo-soja. En estos casos, <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">la incorporaci\u00f3n de material org\u00e1nica a trav\u00e9s del rastrojo se reduce a un m\u00ednimo<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> debido tanto a <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">la quema como el pastoreo de ganado<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Fen\u00f3menos<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> frecuentes <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">asociados<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> con estas pr\u00e1cticas son el <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">sellado y encostramiento superficial y desarrollo de pisos de arado<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p><IMG height=315 src=\"\/blogs\/universo\/wp-content\/blogs.dir\/42\/files\/370\/o_Degradacion%20del%20Suelo%20Argentina.jpg\" width=407><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.oni.escuelas.edu.ar\/2002\/CHACO\/impacto-forestal\/explotacion.htm\"><FONT color=#800080>Degradaci\u00f3n del suelo en Argentina<o:p><\/o:p><\/FONT><\/A><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt\"><SPAN class=MsoHyperlink><SPAN style=\"FONT-SIZE: 8pt; FONT-FAMILY: 'Comic Sans MS'\"><A href=\"http:\/\/www.oni.escuelas.edu.ar\/2002\/CHACO\/impacto-forestal\/explotacion.htm\"><FONT color=#800080>Fuente: oni.escuelas.edu.ar<\/FONT><\/A><\/SPAN><\/SPAN><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; mso-bidi-font-family: Arial\"><o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Se evalu\u00f3 la relaci\u00f3n entre el grado de <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">erosi\u00f3n h\u00eddrica y rendimientos de los cultivos <\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">principales (trigo, ma\u00edz y soja). <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Un grado moderado disminuye el rendimiento de grano en<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> 12% para trigo, 17% para soja y 30% para ma\u00edz, mientras que<\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> un grado severo cambia el efecto a <\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">24, 34 y 61% respectivamente. Cuando se transforman estos valores en <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">p\u00e9rdida econ\u00f3mica<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, se pierden <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">230 a 300 millones de d\u00f3lares<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> debido a la disminuci\u00f3n de rendimientos como <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">consecuencia de erosi\u00f3n h\u00eddrica en los tres cultivos principales<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> (Irurtia, 1995). <o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">La p\u00e9rdida econ\u00f3mica debido a erosi\u00f3n h\u00eddrica <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">en toda la Regi\u00f3n Pampeana alcanza 700-800 millones de d\u00f3lares. A nivel nacional<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> puede alcanzar <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">1000-1200 millones de d\u00f3lares debido a erosi\u00f3n h\u00eddrica y 3000-4000 millones de d\u00f3lares tomando en cuenta todos los procesos<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> de degradaci\u00f3n de la tierra as\u00ed como da\u00f1os a la infraestructura.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">La <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">causa principal de la degradaci\u00f3n de las tierras en la Regi\u00f3n Pampeana<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> es el proceso de <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">\u201cagriculturizaci\u00f3n\u201d o intensificaci\u00f3n de la agricultura<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, la introducci\u00f3n del doble cultivo anual trigo-soja, el cambio de la rotaci\u00f3n ganader\u00eda-agricultura a agricultura continua, y un uso inadecuado de la tierra con labranzas excesivas o a destiempo, a veces a lo largo de las pendientes.<\/SPAN><SPAN style=\"FONT-SIZE: 10pt; COLOR: #007f00; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Para prevenir y controlar<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> los procesos de degradaci\u00f3n <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">se aplican diferentes pr\u00e1cticas alternativas<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> de recuperaci\u00f3n de la tierra y conservaci\u00f3n de la tierra y el agua. <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Un sistema efectivo<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> para prevenir la erosi\u00f3n y mantener la estructura del suelo que ha sido ampliamente <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">incorporado en la Regi\u00f3n Pampeana es la labranza cero o siembra directa<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, que actualmente cubre <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">5.000.000 ha en el pa\u00eds<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. En t\u00e9rminos relativos <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Argentina queda colocada como el pa\u00eds con mayor extensi\u00f3n de esta pr\u00e1ctica<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Vale la pena mencionar el trabajo permanente de AAPRESID, Asociaci\u00f3n Argentina de Productores de Siembra Directa, que es un emprendimiento privado que ha contribuido a la difusi\u00f3n del sistema. <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">AAPRESID<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> tiene proyectos en conjunto con centros de investigaci\u00f3n y tecnol\u00f3gicos, universidades y organismos de extensi\u00f3n y experimentaci\u00f3n para evaluar las ventajas y desventajas del sistema en diferentes regiones ecol\u00f3gicas.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B><SPAN style=\"FONT-SIZE: 10pt; COLOR: teal; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">DESAFIOS PARA EL SIGLO XXI <o:p><\/o:p><\/SPAN><\/B><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">La realidad din\u00e1mica <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">enfrenta a Argentina con nuevos desaf\u00edos que los estudios de suelos tambi\u00e9n deben aceptar<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Debe darse necesaria prioridad a aquellos temas de investigaci\u00f3n con <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">importancia o consecuencias econ\u00f3micas, para satisfacer las necesidades de la gente<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> y para fortalecer la <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">capacidad competitiva<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> del pa\u00eds en el mercado para la colocaci\u00f3n de sus productos. En este sentido, <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">la certificaci\u00f3n ambiental<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> de procesos y productos aparece como <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">una condici\u00f3n obligada para<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> facilitar la colocaci\u00f3n de productos. De hecho, las normas internacionales ISO 14001 constituyen un modo de protecci\u00f3n ambiental (Viglizzo, 1999).<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Los procesos ya mencionados de intensificaci\u00f3n de la agricultura<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, ampliaci\u00f3n de fronteras y la industrializaci\u00f3n de los productos <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">agr\u00edcolas trajo la contaminaci\u00f3n del suelo, agua y aire a la zona rural<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. La experiencia extranjera y conocimiento acerca del <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">alto impacto<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> de tales procesos <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">sobre la salud humana y biodiversidad<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> muestra que Argentina debe prevenir este peligro adecuadamente, pero <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">el tema ha sido subestimado por quienes<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> toman las decisiones pol\u00edticas.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Debe implementarse un sistema para monitoreo y registro de las transformaciones de la tierra<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> como consecuencia de cambios en el uso de la tierra as\u00ed como las variaciones clim\u00e1ticas de los \u00faltimos treinta a\u00f1os. Tambi\u00e9n es esencial <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">obtener datos s\u00f3lidos sobre el impacto y consecuencias del riego suplementario, una pr\u00e1ctica que ha invadido la Regi\u00f3n Pampeana<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> durante los \u00faltimos cinco a\u00f1os y <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">puede introducir tanto erosi\u00f3n del suelo como salinizaci\u00f3n y agotamiento de las reservas de agua subterr\u00e1nea<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Los estudios de suelos urbanos merecen particular atenci\u00f3n<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Los estudios de suelos urbanos acerca de diferentes tipos de degradaci\u00f3n son incipientes en Argentina. M\u00e1s a\u00fan, es necesario <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">hacer que los habitantes de las grandes ciudades acepten su dependencia de lo que est\u00e1 ocurriendo en el \u00e1rea rural<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Normalmente, ellos ven el campo como lejano, con sus propios problemas, sin darse cuenta que en los pa\u00edses con fuerte base agr\u00edcola su interdependencia es particularmente pr\u00f3xima.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">La creaci\u00f3n del Mercosur ha unificado un \u00e1rea de casi 13 millones de kil\u00f3metros cuadrados<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, \u00e1rea en la cual personas y bienes pueden transitar libremente. Desde la apertura de las fronteras ha ocurrido <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">un cambio en demanda y presi\u00f3n sobre el uso de la tierra enfrentando la necesidad de mejorar la competitividad<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">La utilizaci\u00f3n de agroqu\u00edmicos<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> se est\u00e1 incrementando junto <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">con el uso de maquinaria pesada<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> y se aplica <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">riego independientemente de la calidad de agua<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">, siempre en b\u00fasqueda de <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">provecho de corto plazo<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. El aumento en <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">desarrollo industrial producir\u00e1 m\u00e1s desechos y contaminantes<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. La <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">incorporaci\u00f3n de tierras de bosque<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> actuales <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">a la producci\u00f3n de cultivos y ganado es inevitable<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> (Moscatelli, 1995) con el ya conocido <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">deterioro de propiedades f\u00edsicas y qu\u00edmicas<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">. Los procesos son m\u00e1s evidentes y r\u00e1pidamente ocurren en el l\u00edmite. La red de transporte y comunicaci\u00f3n se ha cambiado e incrementado, las <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">ciudades est\u00e1n bajo un proceso de expansi\u00f3n<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> y se desarrollan obras p\u00fablicas. Todos ellos <\/SPAN><B style=\"mso-bidi-font-weight: normal\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: #3366ff; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">crecen a expensas de la superficie otrora ocupada por suelos, introduciendo el sellado superficial<\/SPAN><\/B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"> como el asfalto y concreto.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 13.0cm\"><B><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\"><o:p>&nbsp;<\/o:p><\/SPAN><\/B><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt; mso-layout-grid-align: none; mso-pagination: none\"><SPAN style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 150%; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none\"><B><SPAN lang=ES-TRAD style=\"FONT-SIZE: 10pt; COLOR: teal; LINE-HEIGHT: 150%; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">BIBLIOGRAFIA<o:p><\/o:p><\/SPAN><\/B><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: ES-TRAD; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=ES-TRAD style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">Burgos, J y Vidal, A. 1951. Los climas de la Rep\u00fablica Argentina seg\u00fan la clasificaci\u00f3n de Thornthwaite. Meteoros I (1);3-23. Buenos Aires.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Etchevehere, P. 1976. Normas de Reconocimiento de Suelos . 2da. Ed. Actualizada. INTA-CIRN, Suelos, Public. N\u00ba 52. Castelar, Buenos Aires, Argentina.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=EN-US style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN-US; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-US\">FAO-UNESCO. 1974. Soil Map of the World 1: 5 000 000. Volume I. Legend. UNESCO, Paris.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">FECIC. 1998. El deterioro del ambiente en la Argentina. PROSA, FECIC. Buenos Aires. Argentina.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=EN-US style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN-US; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Frenguelli, J 1955. Loess y limos pampeanos. Univ. Nac. de la Plata, Fac. de Cs. Nat. y Museo, Serie T\u00e9cnica y Did\u00e1ctica N\u00ba 7. La Plata.<\/SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-US\"><o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: ES-TRAD; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-US\">G\u00f3mez, L.A. and Scoppa, C.O. 1994. 100 years of knowledge about Argentine soils. <\/SPAN><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">In: Transactions. <\/SPAN><SPAN style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial\">Vol. 6b, pp. 374-375. <\/SPAN><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">15\u00ba Congreso Mundial de la Ciencia del Suelo, Acapulco, M\u00e9xico.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: ES-TRAD; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=EN-US style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-US\">Hall, A.J.; Rebella, C.M.; Ghersa C.M. and Culot, J.P.. 1992. 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SCS, USDA, US Printing Office, Washington D.C. 503 p.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=EN-GB style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: EN-GB; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=EN-GB style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-GB\">Soil Survey Staff, 1975. Soil Taxonomy. A Basic System of Soil Classification for Making and Interpreting Soil Surveys. U.S. Department of Agriculture, Agriculture Handbook N\u00ba 436. 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Colecci\u00f3n Cient\u00edfica N\u00ba XII. <\/SPAN><SPAN lang=EN-GB style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-GB\">Buenos Aires.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: ES-TRAD; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=EN-GB style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: EN-GB\">Van Wambeke, A. and Scoppa, C. 1980. <\/SPAN><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">Las taxas clim\u00e1ticas de los suelos argentinos. INTA-CIRN, Public. N\u00ba 168. Castelar, Buenos Aires, Argentina<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-INDENT: -17.85pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt; mso-list: l0 level1 lfo1\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Symbol; mso-bidi-font-family: Symbol; mso-ansi-language: ES-TRAD; mso-fareast-font-family: Symbol\"><SPAN style=\"mso-list: Ignore\">\u00b7<SPAN style=\"FONT: 7pt 'Times New Roman'\">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <\/SPAN><\/SPAN><\/SPAN><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">Viglizzo, E. 1999. Primera versi\u00f3n de un Documento Program\u00e1tico para Recursos Naturales. INTA, Buenos Aires. Unpublishe<\/SPAN><SPAN lang=ES-TRAD style=\"FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Arial; mso-ansi-language: ES-TRAD\">d.<o:p><\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 6pt 0cm 0pt; TEXT-ALIGN: justify; mso-layout-grid-align: none; mso-pagination: none; tab-stops: 18.0pt\"><SPAN lang=ES-TRAD style=\"FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial; mso-ansi-language: ES-TRAD\"><o:p>&nbsp;<\/o:p><\/SPAN><\/P> <P class=MsoNormal style=\"MARGIN: 0cm 0cm 0pt; mso-layout-grid-align: none; mso-pagination: none\"><SPAN lang=ES-TRAD style=\"COLOR: #cc0000; FONT-FAMILY: 'Comic Sans MS'; mso-bidi-font-family: Arial; mso-ansi-language: ES-TRAD\">Gustavo Moscatelli y Mabel Susana Pazos<\/SPAN><\/P><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gustavo Moscatelli y Mabel Susana Pazos ex \u00e6quo A mediados de los \u00b470 debido a las demandas crecientes de alimentos y mejores precios agr\u00edcolas, se comenz\u00f3 a aplicar mayor presi\u00f3n sobre las tierras agr\u00edcolas y a\u00fan en las tierras marginales. Estas \u00faltimas se utilizaron descuidadamente respecto de los principios de sustentabilidad, los que de hecho se desarrollaron posteriormente, as\u00ed generando \u201c\u00e1reas de conflicto\u201d respecto de la verdadera aptitud y uso de la tierra tradicional. Se logr\u00f3 un incremento en la producci\u00f3n a trav\u00e9s de la aplicaci\u00f3n de tecnolog\u00eda con insumos como por ejemplo fertilizantes, biocidas y maquinaria pesada. El mensaje\u2026<\/p>\n","protected":false},"author":26,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[594,612,604,593,585,598],"tags":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":4}},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/posts\/89384"}],"collection":[{"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/comments?post=89384"}],"version-history":[{"count":3,"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/posts\/89384\/revisions"}],"predecessor-version":[{"id":134645,"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/posts\/89384\/revisions\/134645"}],"wp:attachment":[{"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/media?parent=89384"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/categories?post=89384"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/universo\/wp-json\/wp\/v2\/tags?post=89384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}