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To determine the most important production constraints and associated yield losses for six major food crops in 13 farming systems with high poverty in Sub-Saharan Africa, South Asia and East Asia, surveys were conducted with 672 experts representing a diversity of backgrounds and experience. Resp...


Waddington, S.R.Li, XDixon, John A.Hyman, GlennVicente, M.C. de[Getting the focus right: production constraints for six major food crops in Asian and African farming systems]Getting the focus right: production constraints for six major food crops in Asian and African farming systems

Soil nutrient depletion as a result of continuous cultivation of soils without adequate addition of external inputs is a major challenge in the highlands of Kenya. An experiment was set up in Meru South District, Kenya in 2000 to investigate the effects of different soil-incorporated organic (man...


Mucheru-Muna, M.Mugendi, DNKung'u, J.B.Mugwe, JBationo, B. André[Effects of organic and mineral fertilizer inputs on maize yield and soil chemical properties in a maize cropping systems in Meru South District, Kenya]Effects of organic and mineral fertilizer inputs on maize yield and soil chemical properties in a maize cropping systems in Meru South District, Kenya

Protocols were established for screening rice genotypes for tolerance to water-limited conditions under field conditions. These protocols were successfully used to select the best genotypes for further experiments. Rice genotypes responded differently when subjected to water-limited conditions. E...


Sakai, TDuque E., Myriam CristinaVallejo Cabrera, Franco AlirioPompilio Martinez, CIshitani, Manabu[Establishment of drought screening protocols for rice under field conditions = Protocolo para la selección de genotipos de arroz tolerantes a déficit hídrico en campo]Establishment of drought screening protocols for rice under field conditions = Protocolo para la selección de genotipos de arroz tolerantes a déficit hídrico en campo
Assefa, T.Beebe, Stephen E.Rao, Idupulapati M.Cuasquer, Juan B.Duque E., Myriam CristinaRivera, MarielaBattisti, ALucchin, M[Pod harvest index as a selection criterion to improve drought resistance in white pea bean]Pod harvest index as a selection criterion to improve drought resistance in white pea bean

In a short-term improved fallow for crop-livestock farming systems of subhumid west Africa, rotational effects from a range of forage legumes on a subsequent maize crop were studied at two sites in south-west Nigeria. Nutrient (nitrogen, phosphorus and potassium) export from the fallows in the fo...


Muhr, LTarawali, Shirley A.Peters, MichaelSchultze-Kraft, Rainer[Forage legumes for improved fallows in agropastoral systems of subhumid West Africa. III. Nutrient import and export by forage legumes and their rotational effects on subsequent maize]Forage legumes for improved fallows in agropastoral systems of subhumid West Africa. III. Nutrient import and export by forage legumes and their rotational effects on subsequent maize
Autor: Grof, B

The yield attributes of 18 accessions of Centrosema, comprising the species, C. macrocarpum, C. brasilianum, Centrosema sp. nov. were compared in two experiments under a cutting regime. Small, grazed swards of various Centrosema spp. sown with Andropogon gayanus in mixture were also studied, with...


Grof, B[Forage potential of some Centrosema species in the Llanos Orientales of Colombia]Forage potential of some Centrosema species in the Llanos Orientales of Colombia

Action thresholds for Tibraca limbativentris Stall (TL) on rice were calculated to be 8.8 and 25.8 TL per 10 sweep nets for 30- and 40-day old plants, respectively. Population dynamics of TL at two localities in Valle del Cauca, Colombia, indicated a density of 1.2 TL per sweep (12 TL per 10 swee...


Pantoja Lopez, ATriana Espinel, MónicaBastidas López, HaroldGarcía Ardila, C.Duque E., Myriam Cristina[Damage by Tibraca limbativentris (Hemiptera: Pentatomidae) to rice in Southwestern Colombia]Damage by Tibraca limbativentris (Hemiptera: Pentatomidae) to rice in Southwestern Colombia

Due to increased population pressure and limited availability of fertile land, farmers on desert fringes increasingly rely on marginal land for agricultural production, which they have learned to rehabilitate with different technologies for soils and water conservation. One such method is the ind...


Fatondji, D.Martius, C.Bielders, Charles L.Vlek, Paul L.G.Bationo, B. AndréGerard, Bruno G.[Effect of planting technique and amendment type on pearl millet yield, nutrient uptake, and water use on degraded land in Niger]Effect of planting technique and amendment type on pearl millet yield, nutrient uptake, and water use on degraded land in Niger

A nursery experiment was conducted in un-sterilized soil in Senegal using six Calliandra species or provenances inoculated with a mixture of seven rhizobial strains. Plant growth was assessed periodically at 1, 2, 3, 12 and 18 months whereas nodulation, shoot and root dry weights were assessed at...


Lesueur, DidierFounoune, HLebonvallet, SSarr, A[Effect of rhizobial inoculation on growth of Calliandra tree species under nursery conditions]Effect of rhizobial inoculation on growth of Calliandra tree species under nursery conditions

The effect of visual screening for grain yield was studied in 9 bean populations resulting from 3 different crossings (single, 3- way, and modified-double crosses) involving different groups of genetic pools from Central America and the Andes. The best yielding lines in the F2 and F3 generations ...


PATINO, H.Singh, S.P.[Visual selection for seed yield in the F2 and F3 generations of nine common bean crosses]Visual selection for seed yield in the F2 and F3 generations of nine common bean crosses

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