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Presents the results of investigations on the relative distribution of the various phosphorus forms, fixing capacity and status of some Ethiopian highland Vertisols.


Mamo, T.Haque, I.Kamara, C.S.[Phosphorus status of some Ethiopian highland Vertisols]Phosphorus status of some Ethiopian highland Vertisols

Summarises available information on the P status of soils, effect of P application on nodulation, dry-matter and seed production, crude-protein and dry-matter digestibility; use of slow release sources of P; differences among species and varieties in their response to P ; assessment of P status o...


Haque, I.Nnadi, L.A.Mohamed-Saleem, M.A.[Phosphorus management with special reference to forage legumes in sub-Saharan Africa]Phosphorus management with special reference to forage legumes in sub-Saharan Africa

Examines the potential of forage legume-cereal intercrops in enhancing soil fertility and increasing crop and livestock production in sub-Saharan Africa. Discusses inter/relay cropping systems, forage legumes in cereal systems, improvement of feed quality and enhancement of soil fertility and com...


Nnadi, L.A.Haque, I.[Forage legume-cereal systems: Improvement of soil fertility and agricultural productivity with special reference to sub-Saharan Africa]Forage legume-cereal systems: Improvement of soil fertility and agricultural productivity with special reference to sub-Saharan Africa

This paper is comprised of five parts. The first part discusses the role of legumes in sustainable soil management and crop-livestock production. In this part, strategic use of legumes, selection of forage legumes to sub-optimal soil conditions, use of appropriate rhizobium, response of legumes t...


Haque, I.Powell, J.M.Ehui, Simeon K.[Improved crop-livestock production strategies for sustainable soil management in tropical Africa]Improved crop-livestock production strategies for sustainable soil management in tropical Africa

Two greenhouse experiments were conducted to investigate the effect of phosphorus application and Rhizobium inoculation on the growth and nitrogen fixation of three tree legume species on a highland vertisol. The first experiment involved Sesbania sesban and S. goetzei, the second Leucaena panicu...


Luyindula, N.Haque, I.[Effect of Rhizobium inoculation and phosphorus on growth and nitrogen fixation in tree legumes grown on highland vertisols]Effect of Rhizobium inoculation and phosphorus on growth and nitrogen fixation in tree legumes grown on highland vertisols

Reviews the present state of knowledge about the biological fixation of N by forage legumes in sub-Saharan Africa; indicates the main factors limiting the contribution of biological Nitrogen to soils by forage legumes; highlights the potentials of legume - food crop - livestock interactions in va...


Haque, I.Jutzi, S.C.[Potentials and limitations to the biological nitrogen contribution from forage legumes in sub-Saharan Africa]Potentials and limitations to the biological nitrogen contribution from forage legumes in sub-Saharan Africa

Reports some responses of three prominent African clovers, viz, Trifolium tembense, T. rueppellianum and T. steudneri native to Ethiopia to phosphorus and combined N/P fertilizers on a P-deficient vertisol at the ILCA headquarters site.


Jutzi, S.C.Haque, I.[The effects of P and N/P fertilizers on the growth, nodulation and seed of three African clovers on a P-deficient Vertisol]The effects of P and N/P fertilizers on the growth, nodulation and seed of three African clovers on a P-deficient Vertisol

Reports on research activities carried out by ILCA's highland programme to devise an appropriate animal feed production strategy for small scale farmeres in the Ethiopian highlands. Gives a critical analysis of the available sources of animal feed, such as, roughages from native pasture, browse a...


Jutzi, S.C.Haque, I.Tedla, A.[The production of animal feed in the Ethiopian highlands: Potentials and limitations]The production of animal feed in the Ethiopian highlands: Potentials and limitations
Autor: Haque, I.

Crop livestock production systems in Africa are constrained by wide fluctuations in the quality and quantity of feed resources during the year and by the low availability of nutrients, especially nitrogen and phosphorus, in most soils, which threatens the sustainability of primary production. In ...


Haque, I.[Use of legume biological nitrogen fixation in crop/livestock production systems]Use of legume biological nitrogen fixation in crop/livestock production systems

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