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Jiménez Jaén, J.J.Barrios, E.Ayarza, Miguel AngelLavelle, Patrick M.Decaëns, Thibaud[Harnessing the biological plows of the soil: soil macrofauna communities]Harnessing the biological plows of the soil: soil macrofauna communities
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
Friesen, Dennis K.Amézquita Collazos, EdgarRao, Idupulapati M.Bernal Riobo, Jaime Humberto[Culticore, Ensayo de largo plazo para el desarrollo de sistemas de producción sostenibles en suelos ácidos de sabanas]Culticore, Ensayo de largo plazo para el desarrollo de sistemas de producción sostenibles en suelos ácidos de sabanas

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
Rivera, M.Amézquita Collazos, Edgar[Caracterización biofísica de sistemas monocultivos y en rotación en oxisoles de los Llanos Orientales de Colombia]Caracterización biofísica de sistemas monocultivos y en rotación en oxisoles de los Llanos Orientales de Colombia

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

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