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Presents the dry matter yields of 9 trifolium species fertilized at various P levels on a black clay vertisol (PH6) at ILCA's head quarters near Addis Ababa (elevation 2400m, rainfall 1300 mm).


Akundabweni, L.S.[Les trefles indigenes des hauts plateaux ethiopiens: Champions des forets de l'interieur]Les trefles indigenes des hauts plateaux ethiopiens: Champions des forets de l'interieur

Low soil phosphorus (P) has been singled out as a major constraint leading to perpetually low bean (Phaseolus vulgaris L.) grain yield far below the expected yield potential. In developing countries beans are mainly produced by small-scale farmers who have little capacity to use inorganic fertili...


Kimani, JMKimani, P.M.Githiri, SMKimenju, J.W.[Mode of inheritance of common bean (Phaseolus vulgaris L.) traits for tolerance to low soil phosphorus (P)]Mode of inheritance of common bean (Phaseolus vulgaris L.) traits for tolerance to low soil phosphorus (P)

Nutrient balances are useful tools as indicators of potential land degradation and for optimizing nutrient use, and are thus highly relevant in the African context. A comprehensive literature review on nutrient balances in Africa was carried out to illustrate the main approaches, challenges, and ...


Cobo Borrero, Juan G.Dercon, G.Cadisch, Georg[Nutrient balances in African land use systems across different spatial scales: a review of approaches, challenges and progress]Nutrient balances in African land use systems across different spatial scales: a review of approaches, challenges and progress

Cultivars of common bean (Phaseolus vulgaris L.) capable of yielding well at low levels of native or added phosphorus (P) are highly desirable in many tropical production systems. The objective of the present study was to identify geographical regions which might be sources of such genotypes. A t...


Beebe, Stephen E.Lynch, JGalwey, Nicholas W.Tohme, Joseph M.Ochoa, IE[A geographical approach to identify phosphorus-efficient genotypes among landraces and wild ancestors of common bean]A geographical approach to identify phosphorus-efficient genotypes among landraces and wild ancestors of common bean
L'taief, BSifi, BZaman-Allah, M.A.Horres, RMolina, CBeebe, Stephen E.Winter, PKahl, GDrevon, J.Lachaal, M[Genotypic variability for tolerance to salinity and phosphorus deficiency among N2-dependent recombinant inbred lines of common bean (Phaseolus vulgaris)]Genotypic variability for tolerance to salinity and phosphorus deficiency among N2-dependent recombinant inbred lines of common bean (Phaseolus vulgaris)

A large proportion of total P in the soils of the area is unavailable to plants and consequently P is the second most limiting nutrient. The labile and moderately labile phosphorus fractions and adsorption characteristics of surface and subsurface horizons of eleven soil profiles in the derived s...


Nwoke, O.C.Vanlauwe, BernardDiels, J.Sanginga, N.Osonubi, O.Merckx, R.[Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils]Assessment of labile phosphorus fractions and adsorption characteristics in relation to soil properties of West African savanna soils
Epper, Carole A.Paul, Birthe K.Burra, Dharani DharPhengsavanh, PhonepaseuthRitzema, Randall S.Syfongxay, SaysomphengGroot, Jeroen C.J.Six, JohanFrossard, EmmanuelOberson, AstridDouxchamps, Sabine[Nutrient flows and intensification options for smallholder farmers of the Lao uplands]Nutrient flows and intensification options for smallholder farmers of the Lao uplands
Autor: Wendt, J.

Groundnut (Arachis hypogaea L) is an important intercrop in southern Cameroon. Two on-farm experiments were undertaken to determine if soil fertility constraints, varieties and tillage practices were major limiting factors in groundnut production. In Experiment I, combinations of P and K fertiliz...


Wendt, J.[Groundnut response to ash, phosphorus, potassium, lime, and tillage in southern Cameroon]Groundnut response to ash, phosphorus, potassium, lime, and tillage in southern Cameroon

Most commercial Brachiaria species are adapted to low-fertility acid soils of the tropics. We describe, with examples, some of the attributes that enable them to adapt. These include the ability to (1) maintain root growth at the expense of shoot growth; (2) acquire and use both nitrate and ammon...


Rao, Idupulapati M.Kerridge, Peter C.Macedo, Manuel Cláudio Motta[Nutritional requirements of Brachiaria and adaptation to acid soils]Nutritional requirements of Brachiaria and adaptation to acid soils

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