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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

Integrated pest management (IPM) has been widely promoted in the developing world, but in many regions its adoption rates have been variable. Experience has shown that to ensure IPM adoption, the complexities of local agro-production systems and context-specific folk knowledge need to be apprecia...


Wyckhuys, Kris A.G.O'Neil, RJ[Local agro-ecological knowledge and its relationship to farmers' pest management decision making in rural Honduras]Local agro-ecological knowledge and its relationship to farmers' pest management decision making in rural Honduras

To guide soil fertility investment programmes in sub-Saharan Africa, better understanding is needed of the relative importance of soil and crop management factors in determining smallholder crop yields and yield variability. Spatial variability in crop yields within farms is strongly influenced b...


Tittonell, Pablo A.Shepherd, Keith D.Vanlauwe, BernardGiller, Ken E.[Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya : An application of classification and regression tree analysis]Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya : An application of classification and regression tree analysis

Los recientes cambios en los sistemas de producción de maíz (Zea mays L.), incluyendo siembras escalonadas y continúas del cultivo en Colombia, han incrementado la incidencia de algunas enfermedades, entre las que se destaca el mosaico de la caña de azúcar (SCMV). Estudios de varios investigadore...


Salazar Erazo, SMLeón, C. de[Selección de líneas de maíz (Zea mays L.) con resistencia al virus del mosaico de la caña de azúcar (SCMV)]Selección de líneas de maíz (Zea mays L.) con resistencia al virus del mosaico de la caña de azúcar (SCMV)

Se planteó un ensayo de campo para evaluar los efectos acumulados de la fertilización y la labranza en el cultivo de maíz y en pastos sin carga animal. Se evaluaron cambios en parámetros químicos y físicos del suelo en el primer centímetro de suelo de parcelas que se establecieron en 1995 en la f...


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 : I. Caracterización química y textural en superficie = Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia: I. Chemical and textural 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 : I. Caracterización química y textural en superficie = Evaluation of harrowing intensity on surface crusting on an oxisol of the eastern plains of Colombia: I. Chemical and textural characterization in soil surface

Recent hikes in food prices have created economic and social turmoil in many African countries. But in Malawi, fertilizer and seed subsidies have enabled small-scale farmers to improve maize productivity and achieve food security.


Denning, G.L.Kabambe, PSánchez, P.A.Malik, A.Flor, RHarawa, RNkhoma, PZamba, CBanda, CMagombo, CKeating, MWangila, J.Sachs, JD[Input subsidies to improve smallholder maize productivity in Malawi : Toward an African green revolution]Input subsidies to improve smallholder maize productivity in Malawi : Toward an African green revolution
Maltas, ACorbeels, MarcScopel, EWery, JSilva, F.A.M. da[Cover crop and nitrogen effects on maize productivity in no-tillage systems of the Brazilian cerrados]Cover crop and nitrogen effects on maize productivity in no-tillage systems of the Brazilian cerrados

Two sets of on-farm trials, each covering two years, were conducted in the northern Guinea savannah of Nigeria over the period 1999–2001, the objective being to compare integrated Striga hermonthica control measures (soybean or cowpea trap crops followed by maize resistant to Striga) with farmers...


Ellis-Jones, J.Schulz, S.Douthwaite, BoruHussaini, M.A.Oyewole, BDOlanrewaju, ASWhite, R[An assessment of integrated Striga hermonthica control and early adoption by farmers in Northern Nigeria]An assessment of integrated Striga hermonthica control and early adoption by farmers in Northern Nigeria

Cyrtomenus bergi Froeschner (Hemiptera: Cydnidae) is a polyphagous subterranean burrower bug reported on various crops and weeds in the field. Bionomics and population growth statistics of C. bergi while feeding on peanut (Arachis hypogaea L.), pinto peanut (Arachis pintoi, Krapovickas et Gregory...


Riis, LBellotti, Anthony C.Arias, B.[Bionomics and population growth statistics of Cyrtomenus bergi (Hemiptera: Cydnidae) on different host plants]Bionomics and population growth statistics of Cyrtomenus bergi (Hemiptera: Cydnidae) on different host plants

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