Descubre y comparte nuestro conocimiento público

Se han encontrado 291 recursos

Resultados de búsqueda

Iron toxicity reduces rice (Otyza sativa L.) grain yield in many poorly drained swamps in West Africa. Two methods for alleviating Fe toxicity were examined, (i) the use of a resistant genotype, and l(ii) planting on ridges to aerate the upper root zone. Grain yield responses to these factors wer...


Winslow, M.Yamauchi, M.Alluri, F.Masajo, T.[Reducing iron toxicity in rice with resistant genotype and ridge planting]Reducing iron toxicity in rice with resistant genotype and ridge planting

Research to identify appropriate means of sustaining tropical soil productivity has intensified during the last 2 decades and promising technologies such as minimum tillage, herbaceous and tree based systems, and improved fallows have been identified. This paper discusses the contribution of soil...


Sanginga, N.Mulongoy, K.Swift, M.[Contribution of soil organisms to the sustainability and productivity cropping systems in the tropics]Contribution of soil organisms to the sustainability and productivity cropping systems in the tropics

The effects of tropical weeds on the yield of while yam were studied outdoors in wooden boxes. When the foliage and roots of weeds were in physical contact with the crop until harvest (full interference), tuber yield of yam was reduced by 76–79% of that obtained under weed‐free conditions over 3 ...


Unamma, R.P.Akobundu, I.[Effects of tropical weeds on yield in white yam (Dioscorea rotundata Poir)]Effects of tropical weeds on yield in white yam (Dioscorea rotundata Poir)
Autor: Okigbo, B.

Ecological consideration indicate that traditional agroecosystems involving mixed cropping and genetic diversity among crop species are relatively more stable than modern agroecosystems. Modern food production technologies involving more uniform crops over wide areas, use of more costly inputs an...


Okigbo, B.[Multidisciplinary approach to pest management and the African farmer]Multidisciplinary approach to pest management and the African farmer

Widely consumed forest fruits in Gabon were analysed for nutrient and bioactive compositions and their potential contributions to meeting the nutrient requirements of consumers. Edible pulps of Panda oleosa Pierre, Gambeya lacourtiana (De Wild.) Aubrév. & Pellegr. and Poga oleosa Pierre contained...


Fungo, R.Muyonga, J.H.Ngondi, J.L.Mikolo-Yobo, C.Iponga, D.M.Ngoye, A.Nchuaji Tang, E.Chupezi Tieguhong, J.[Nutrient and bioactive composition of five Gabonese forest fruits and their potential contribution to dietary reference intakes of children aged 1–3 years and women aged 19–60 years]Nutrient and bioactive composition of five Gabonese forest fruits and their potential contribution to dietary reference intakes of children aged 1–3 years and women aged 19–60 years

The publication aims at shedding light on the use, nutritional properties, market potential and contribution to local livelihoods of Andean grains (quinoa, cañahua and amaranth). It addresses some of the research gaps regarding knowledge of the use, as well as the market and non-market value of t...


Giuliani, A.Hintermann, F.Rojas, W.Padulosi, S.Bioversity InternationalBern University of Applied Science[Biodiversity of Andean grains: balancing market potential and sustainable livelihoods]Biodiversity of Andean grains: balancing market potential and sustainable livelihoods
Autor: Hauser, S.

To assess if the nutrient supply through planted tree fallows meets crop nutrient uptake and export, N, P, K, Ca and Mg uptake and export by a groundnut/maize/cassava intercrop was compared with the nutrient uptake by three planted fallow systems (Senna spectabilis, Flemingia macrophylla, Dactyla...


Hauser, S.[Impact of planted hedgerow fallows on nutrient balances in a groundnut/maize/cassava intercrop]Impact of planted hedgerow fallows on nutrient balances in a groundnut/maize/cassava intercrop

Crop growth on acid sandy soils of the Sudano-Sahelian zone is primarily limited by the low amounts of organic matter and available mineral nutrients in the topsoil. The shortening of fallow periods with population growth, the exploitation of fire wood, spatial nutrient transfers by wind and wate...


Buerkert, AndreasHiernaux, Pierre H.Y.[Nutrients in the West African Sudano-Sahelian zone: Losses, transfers and role of external inputs]Nutrients in the West African Sudano-Sahelian zone: Losses, transfers and role of external inputs

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso