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Tergas, Luis EduardoPaladines M., Osvaldo L.Kleinheisterkamp, IngoVelásquez R., J.E.[Animal production from native pastures with complementary grazing of Pueraria phaseoloides in the Eastern Plains of Colombia]Animal production from native pastures with complementary grazing of Pueraria phaseoloides in the Eastern Plains of Colombia
Leeuw, P.N. de[The primary and secondary productivity of the savannas in the middle belt of Nigeria]The primary and secondary productivity of the savannas in the middle belt of Nigeria

Crop-livestock integration (CLI) to improve natural resource management for increased productivity is evolving in Nigeria and West Africa. Processes in the evolution and factors that influence it still need to be well understood. This article proposes and tests a new framework for measuring the m...


Manyong, Victor M.Okike, I.Williams, Timothy O.[Effective dimensionality and factors affecting crop-livestock integration in West African savannas: A combination of principal component analysis and Tobit approaches]Effective dimensionality and factors affecting crop-livestock integration in West African savannas: A combination of principal component analysis and Tobit approaches

In the Cerrado region of Brazil conventional soybean monoculture is since the 1980s being replaced by direct seeding mulch-based cropping (DMC) with two crops per year and absence of tillage practices. The objective of this study was to assess the long-term impact of DMC on soil organic matter ac...


Maltas, ACorbeels, MarcScopel, EOliver, RDouzet, Jean-MarieSilva, F.A.M. daWery, J[Long-term effects of continuous direct seeding mulch-based cropping systems on soil nitrogen supply in the Cerrado region of Brazil]Long-term effects of continuous direct seeding mulch-based cropping systems on soil nitrogen supply in the Cerrado region of Brazil

Since 1996, the collaborative project between CIRAD (Agricultural Research Centre for International Development) and CIAT (Centro Internacional de Agricultura Tropical) has gradually phased out intra-specific tropical japonica conventional crossbreeding activities and concentrated on rice genetic...


Chatel, MOspina Rey, YolimaRodríguez, F.Lozano, VHDelgado, H.[Upland rice composite population breeding and selection of promising lines for Colombian savannah ecosystem]Upland rice composite population breeding and selection of promising lines for Colombian savannah ecosystem

Soil organic matter (SOM) and phosphorus (P) fractions play a key role in sustaining the productivity of acid-savanna oxisols and are greatly influenced by tillage practices. In 1993, a long-term experiment on sustainable crop rotation and ley farming systems was initiated on a Colombian acid-sav...


Basamba, T.A.Barrios, E.Amézquita Collazos, EdgarRao, Idupulapati M.Singh, B.R.[Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions]Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions

Soil carbon distribution with depth, stable carbon isotope ratios in soil organic matter and their changes as a consequence of the presence of legume were studied in three 12-year-old tropical pastures (grass alone Brachiaria decumbens (C4), legume alone Pueraria phaseoloides (C3) and grass + l...


Rao, Idupulapati M.Ayarza, Miguel AngelThomas, Richard J.[The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures]The use of carbon isotope ratios to evaluate legume contribution to soil enhancement in tropical pastures

O objetivo deste trabalho foi avaliar o efeito do uso do solo sobre a densidade e a diversidade da macrofauna invertebrada, bem como a relação dessa com atributos químicos do solo em diferentes agroecossistemas. Foram estudados cinco agroecossistemas: sistema ecológico com três anos de adoção (SE...


Lima, S.S. deAquino, A.M. deLeite, LFCVelásquez, E.Lavelle, Patrick M.[Relação entre macrofauna edáfica e atributos químicos do solo em diferentes agroecossistemas]Relação entre macrofauna edáfica e atributos químicos do solo em diferentes agroecossistemas

La metodología presentada en este artículo permitió correlacionar el sellamiento del suelo y propiedades físicas como estabilidad estructural, velocidad de infiltración, suelo erosionado, escorrentía, resistencia normal y torsional, y distribución de agregados. Los resultados mostraron que los pa...


Galvis, JHAmézquita Collazos, EdgarMadero, E[Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia : II. Caracterización física en superficie = Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia: II. Physical characterization in soil surface]Evaluación del efecto de la intensidad de labranza en la formación de costra superficial de un oxisol de sabana en los Llanos Orientales de Colombia : II. Caracterización física en superficie = Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia: II. Physical characterization in soil surface

The application of biochar (biomass-derived black carbon) to soil has been shown to improve crop yields, but the reasons for this are often not clearly demonstrated. Here, we studied the effect of a single application of 0, 8 and 20 t ha?1 of biochar to a Colombian savanna Oxisol for 4 years (200...


Major, JRondón, Marco AntonioMolina Lopez, DLRiha, SJLehmann, Johannes[Maize yield and nutrition during 4 years after biochar application to a Colombian savanna oxisol]Maize yield and nutrition during 4 years after biochar application to a Colombian savanna oxisol

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