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New semiDwarf wheat (Triticum aestivum L.) cultivars and new land management practices for Vertisols are being introduced in Ethiopia. Our objectives were to (i) determine the variation of N and P contents and concentration in the grain and whether these are related to grain yield, (ii) test cult...


Schulthess, Urs C.Feil, B.Jutzi, S.C.[Yield-independent variation in grain nitrogen and phosphorus concentration among Ethiopian wheats]Yield-independent variation in grain nitrogen and phosphorus concentration among Ethiopian wheats

The study uses field level data from Niger to investigate whether traditional land tenure systems are an impediment to allocative efficiency in agriculture. The paper begins with a brief review of the emperical evidence available on African and other parts of the world and then describes the land...


Gavian, S.Fafchamps, M.[Land tenure and allocative efficiency in Niger]Land tenure and allocative efficiency in Niger
Luyindula, N.Weaver, R.W.[Nitrogen partitioning in cowpea as influenced by rhizobial strain and mineral nitrogen]Nitrogen partitioning in cowpea as influenced by rhizobial strain and mineral nitrogen

Summarizes and discusses the results of an experiment carried out in 1983 with oats and Italian ryegrass on a soil with vertic properties near Debre Berhan area (Ethiopia) to examine the effects of improved drainage and fertilization (N/P).


Haque, I.Jutzi, S.C.[Effets du drainage ameliore et de l'application d'engrais sur la croissance de l'ivraie multiflore et de l'avoine sur un sol a proprietes vertiques a Debre Berhan, Ethiopie]Effets du drainage ameliore et de l'application d'engrais sur la croissance de l'ivraie multiflore et de l'avoine sur un sol a proprietes vertiques a Debre Berhan, Ethiopie

Reports on the effects of a processed commercial phosphorus fertilizer compared with those of a relatively inexpensive rock phosphate on the growth of a native Ethiopian clover.


Haque, I.Jutzi, S.C.[Efficacite relative de phosphates chimiques et naturels sur la croissance d'un trefle africain]Efficacite relative de phosphates chimiques et naturels sur la croissance d'un trefle africain

This study evaluated the performance of tree legumes and other soil fertility management innovations used by farmers. The objectives of the study were to: examine the extent that farm attributes, typology of farmers and field management practices have affected the adaptation and use of agroforest...


Akinnifesi, F.K.Sileshi, Gudeta W.Franzel, StevenAjayi, Oluyede C.Harawa, RMakumba, WChakeredza, S.Mngomba, SWolf, J.J. deChianu, J.N.[On-farm assessment of legume fallows and other soil fertility management options used by smallholder farmers in Southern Malawi]On-farm assessment of legume fallows and other soil fertility management options used by smallholder farmers in Southern Malawi

Field inoculation trials with cassava (Manihot esculenta Crantz) were conducted in Quilichao (typic Dystropept soil) and Carimagua (Haplustox soil). In Quilichao, with a large and effective native VA-mycorrhizal (VAM) population, inoculation withGlomus manihotis did not increase cassava yields si...


Howeler, Reinhardt H.Sieverding, E[Potentials and limitations of mycorrhizal inoculation illustrated by experiments with field-grown cassava]Potentials and limitations of mycorrhizal inoculation illustrated by experiments with field-grown cassava

Based on research results, the advantages of cassava over other crops, the use of improved cv. for different ecosystems, good management practices, crop protection, and soil fertility requirements are discussed in detail. (CIAT)


Cock, James H.[Some factors in successful cropping. 9. Cassava]Some factors in successful cropping. 9. Cassava

Limited availability of soil organic amendments and unpredictable rainfall, decrease crop yields drastically in the Sahel. There is, therefore, a need to develop an improved technology for conserving soil moisture and enhancing crop yields in the Sahelian semi-arid environment. A 2-year field exp...


Ibrahim, A.Abaidoo, R.C.Fatondji, D.Opoku, A.[Integrated use of fertilizer micro-dosing and Acacia tumida mulching increases millet yield and water use efficiency in Sahelian semi-arid environment]Integrated use of fertilizer micro-dosing and Acacia tumida mulching increases millet yield and water use efficiency in Sahelian semi-arid environment

Recent studies have reported the benefits of fertilizer microdosing in increasing crop yields in low input cropping systems. Little information is however available on the mechanisms underlying this effect. The objective of this study was therefore to explore the root-based mechanisms governing t...


Ibrahim, A.Abaidoo, R.C.Fatondji, D.Opoku, A.[Determinants of fertilizer microdosing-induced yield increment of pearl millet on an acid sandy soil]Determinants of fertilizer microdosing-induced yield increment of pearl millet on an acid sandy soil

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