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Decline in crop yields is a major problem facing smallholder farmers in Kenya and the entire Sub-Saharan region. This is attributed mainly to the mining of major nutrients due to continuous cropping without addition of adequate external nutrients. In most cases inorganic fertilizers are expensive...


Kimetu, J.M.Mugendi, DNPalm, C.A.Mutuo, PKGachengo, CNBationo, B. André[Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya]Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with organic nitrogen source in Central Kenya
Tomich, Thomas P.Timmer, D.W.Velarde, S.J.Alegre, J.Areskoug, V.Cash, D.W.Cattaneo, AndreaEricksen, Polly J.Joshi, L.Kasyoki, J.Legg, C.Locatelli, M.Murdiyarso, DanielPalm, C.A.Porro, R.Perazzo, A.R.Salazar-Vega, A.Noordwijk, Meine vanWeise, S.F.White, D.[Integrative science in practice: process perspectives from ASB, the partnership for the tropical forest margins]Integrative science in practice: process perspectives from ASB, the partnership for the tropical forest margins

Characterization of decomposition characteristics is important for sound management of organic residues for both soils and livestock, but routine residue quality analysis is hindered by slow and costly laboratory methods. This study tested the accuracy and repeatability of near-infrared spectrosc...


Shepherd, Keith D.Vanlauwe, BernardGachengo, CNPalm, C.A.[Decomposition and mineralization of organic residues predicted using near infrared spectroscopy]Decomposition and mineralization of organic residues predicted using near infrared spectroscopy
Vitousek, P.M.Naylor, RLCrews, TDavid, M.B.Drinkwater, L.E.Holland, EJohnes, PJKatzenberger, JMartinelli, LAMatson, PANziguheba, GeneroseOjima, DSPalm, C.A.Robertson, GPSánchez, P.A.Townsend, ARZhang, FS[Nutrient Imbalances in agricultural development]Nutrient Imbalances in agricultural development

The application of nitrogen in a soil under agricultural production is subject to several pathways including de-nitrification, leaching and recovery by an annual crop. This is as well greatly influenced by the management practices, nitrogen source and soil conditions. The main objective of this s...


Kimetu, J.M.Mugendi, DNBationo, B. AndréPalm, C.A.Mutuo, PKKihara, JobNandwa, SMGiller, Ken E.[Partial balance of nitrogen in a maize cropping systems in humic nitisol of Central Kenya]Partial balance of nitrogen in a maize cropping systems in humic nitisol of Central Kenya

Organic resources constitute a major source of nutrient inputs to both soils and livestock in smallholder tropical production systems. Determination of resource quality attributes using current laboratory methods is both timely and costly. This study tested visible and near-infrared (wavelengths ...


Shepherd, Keith D.Palm, C.A.Gachengo, CNVanlauwe, Bernard[Rapid characterization of organic resource quality for soil and livestock management in tropical agroecosystems using near-infrared spectroscopy]Rapid characterization of organic resource quality for soil and livestock management in tropical agroecosystems using near-infrared spectroscopy

Soils are increasingly recognized as major contributors to ecosystem services such as food production and climate regulation (1, 2), and demand for up-to-date and relevant soil information is soaring. But communicating such information among diverse audiences remains challenging because of incons...


Sánchez, P.A.Ahamed, SCarre, FHartemink, A.E.Hempel, JHuising, JeroenLagacherle, PMcBratney, ABMcKenzie, NMendonca-Santos, MLMinasny, BMontanarella, LOkoth, Peter F.Palm, C.A.Sachs, JDShepherd, Keith D.Vagen, T.G.Vanlauwe, BernardWalsh, MWinowiecki, Leigh A.Zhang, GL[Digital soil map of the world]Digital soil map of the world

The Emissions Gap Report 2013 from the United Nations Environment Programme restates the claim that changing to no-till practices in agriculture, as an alternative to conventional tillage, causes an accumulation of organic carbon in soil, thus mitigating climate change through carbon sequestratio...


Powlson, David S.Stirling, Clare M.Jat, Mangi LalGerard, Bruno G.Palm, C.A.Sánchez, P.A.Cassman, Kenneth G.[Limited potential of no-till agriculture for climate change mitigation]Limited potential of no-till agriculture for climate change mitigation

ASB, the Partnership for the Tropical Forest Margins, is a decade-old, complex, multi-institutional, multi-disciplinary, multi-site research and development consortium. It has been recognized for its success in producing scientific outputs and real world impacts and as a pioneer in integrated nat...


Tomich, Thomas P.Timmer, D.W.Velarde, SJAlegre Orihuela, JCAreskoug, V.Cash, D.W.Cattaneo, AndreaEricksen, Polly J.Joshi, L.Kasyoki, JLegg, C.Locatelli, M.Murdiyarso, DanielPalm, C.A.Porro, R.Rescia Perazzo, ASalazar Vega, ANoordwijk, Meine vanWeise, S.F.White, D.[Integrative science in practice : Process perspectives from ASB, the partnership for the tropical forest margins]Integrative science in practice : Process perspectives from ASB, the partnership for the tropical forest margins

Organic resources (ORs) are essential inputs in tropical farming systems and their decomposition dynamics are related to their quality. A Decision Support System (DSS) for organic N management has been proposed earlier that subdivides ORs in four classes depending on their N, lignin, and soluble ...


Vanlauwe, BernardGachengo, CNShepherd, Keith D.Barrios, E.Cadisch, GeorgPalm, C.A.[Laboratory validation of a resource quality-based conceptual framework for organic matter management]Laboratory validation of a resource quality-based conceptual framework for organic matter management

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