Download or read book Efecto de la labranza sobre algunas propiedades fisicas del suelo written by Pedro Pablo Herrera Vivas and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book El Efecto de la Materia Organica en Algunas Propiedades Fisicas Del Suelo E Influencia de la Humedad en la Determinacion Del Peso Especifico Aparente written by Antonio Manjarrez Hernandez and published by . This book was released on 1954 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efecto de Abonos Org nicos Y Labranza de Conservaci n written by Alfonso Avalos Marines and published by Ewe Editorial Acad MIA Espa Ola. This book was released on 2012-08 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: La labranza convencional y el mal manejo de los suelos producen modificaciones desfavorables desde el punto de vista de conservacion de algunas propiedades de los suelos, tales como: degradacion integral del recurso suelo, incrementando la superficie agricola con problemas de erosion y perdida paulatina de la productividad. La labranza excesiva es la causa primaria de la erosion a nivel parcela, la labranza de conservacion puede reducir hasta en un 90 % estos problemas. La Comarca Lagunera es una zona semiarida con alta evaporacion y escasa precipitacion, donde la principal limitante para la agricultura es la escasez de agua, y ademas presenta problemas de sobrelaboreo. Ademas es la principal cuenca lechera del pais. Aqui se producen anualmente 1'100,000 toneladas de estiercol bovino, lo cual permite plantear la posibilidad de su utilizacion en la agricultura. El objetivo del presente trabajo fue evaluar el efecto de la labranza de conservacion y el uso de estiercol bovino y composta sobre las propiedades fisicas del suelo y el rendimiento de maiz forrajero."
Download or read book Agropastoral Systems for the Tropical Savannas of Latin America written by Elcio Perpétuo Guimarães and published by CIAT. This book was released on 2004 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: Part I: Agropastoral research in the tropical savannas of Latin America. Part II: Methodological aspects of agropastoral research. Part III: Crops and forages as components of agropastoral systems. Part IV: Potential of agropastoral systems for the sustainable management of the tropical savannas of South America. Part V: Acquired experiences and the road to the future.
Download or read book Subsolado despu s de 30 a os de cero labranza y su efecto en algunas propiedades f sicas y movilidad de la materia org nica en un alfisol written by Roberto Daniel Stuardo Troncoso and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Curvas de distribuci n de algunas propiedades de suelos rojo arcillosos de Mulchen con labranza cero casos con quema de residuos written by Jaime Arturo Loyola Muñoz and published by . This book was released on 1992 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: La elección de los sitios del ensayo obedece a distintos manejos e incluye: Pradera natural, zona sin vegetación, corral de alimentación animal, cultivos en cero labranza y bosque de Eucaliptus. De cada sitio se extraen muestras de suelo cada 4 cms para determinar sus propiedades físicas y químicas. La interpretación de los resultados se presentan gráficamente y además se calculan los coeficientes de correlación entre propiedades analizadas en todos los sitios. Los resultados más relevantes encontrados son los siguientes: El pH del suelo no mostró variación con la profundidad del suelo. Existe una acumulación de fósforo Olsen en los primeros 10 cm de suelo, en sitios que han sido fertilizados con fosfatos y sembrados en cero labranza. Los sitios erosionados y plantados con Eucaliptus, presentaron los mayores contenidos de intercambio, en condiciones de suelo seco. Además, presentaron los valores más bajos de todos los nutrientes analizados. Las asociaciones más importantes se registraron para el contenido de aluminio de intercambio con el pH, la cantidad de materia orgánica y la riqueza en fósforo Olsen.
Download or read book Integrated soil fertility management in the tropics TSBF CIAT s achievements and reflections 2002 2005 written by and published by CIAT. This book was released on 2006 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efecto de cuatro sistemas de labranza sobre algunas propiedas f sicas del suelo y written by Diana Luz Jassan Alba and published by . This book was released on 1991* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sugar written by and published by . This book was released on 1920 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Propiedades f sicas de los suelos written by Dimas Malagón Castro and published by . This book was released on 1976 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Influencia del manejo sobre algunas propiedades f sicas y qu micas de un suelo de la comarca de El Condado written by Oscar A. Bravo and published by . This book was released on 1988 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Policy Guidelines on Soil and Water Conservation for Rainfed Mechanized Agriculture in the Central Plains of Guarico State Venezuela written by Henrr Uzcátegui and published by . This book was released on 1996 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrochimica written by and published by . This book was released on 1989 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transactions written by and published by . This book was released on 1994 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1o Seminario Internacional Sobre Plantio Direto nos Tropicos Sul Americanos written by and published by IICA Biblioteca Venezuela. This book was released on 2001 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Efecto de tres sistemas de labranza en las propiedades f sicas y en el consumo energ tico para el cultivo del tabaco Nicotiana tabacum L en un Vertisol written by Yosvel Enrique Olivet Rodríguez and published by . This book was released on 2010 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
