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Nitrogen level and cultivar effects on nodulation, dinitrogen fixation and yield of grain legumes: I. Cowpea cultivars
(1985)
N fixation was studied by the 15N method in Vigna unguiculata cv. ERI-2, Vita 4 and Machakos 74 grown in a field which had been fallow for 3 years and given 20 or 100 kg N/ha. The higher N rate reduced nodulation in all ...
The effects of phosphorus and nitrogen fertilizer level on nodulation, growth and dinitrogen fixation of three bean cultivars
(1986)
Application of P (150 kg P/ha) increased nodulation, dry matter yield, P uptake, tissue N yield, dinitrogen fixation and seed yield of the three bean cultivars (Rose Coco, Canadian Wonder and Mwezi moja) at both N levels ...
Biological control of fusarium yellows on beans caused by fusarium oxysporum schl. f. sp. phaseoli kendrick & snyder using organic amendments locally available in Kenya
(1988)
Coffee hulls and farmyard manure which are locally available were found to be effective in controlling Fusarium yellows in greenhouse experiments in Kenya. An attempt to establish optimum levels of soil amendment with ...
The Effect of Phosphorus on Nodulation, Growth and Dinitrogen Fixation by Beans
(1983)
The effect of phosphorus on nodulation, dry matter yield and dinitrogen fixation (as determined by the 15N technique) of bean plants (Phaseolus vulgaris) was evaluated in a field experiment at three growth stages. Application ...
Nitrogen fixation in tropical agriculture and forestry
(1987)
Nitrogen compounds comprise from 40 to 50 percent of the dry matter of protoplasm, the living substance of plant cells. For this reason, nitrogen is required in large quantities by growing plants and is indeed the key to ...
Nitrogen level and cultivar effects on nodulation, dinitrogen fixation and yield of grain legumes: II. Common bean cultivars.
(1985)
N fixation was studied by the 15N method in Phaseolus vulgaris cv. Rose Coco, Canadian Wonder and Mwezi Moja grown in the field and given 0, 20 or 100 kg N/ha. Nodulation, DM yield and seed yield did not differ significantly ...
The East AfricanRhizobium MIRCEN; A framework for promoting regionally co-ordinated biological nitrogen fixation
(1986)
The Nairobi MIRCEN, which addresses itself to N2-fixation by legume-rhizobia systems, was established in 1977 in the Departments of Soil Science and Botany of the University of Nairobi as one of the first four MIRCENs. The ...
Effect of Organic Amendments on Fusarium Yellows Disease on the Bean Host
(1989-12)
Three organic amendments locally available in Kenya namely coffee hulls (C/N>N-39), rice husks (C/N-39) and farmyard manure (C/N-ll) were tested for control of the Fusarium yellows disease of beans in the greenhouse. Coffee ...
Interaction of Phaseolus vulgaris with thermotolerant isolates ofRhizobium leguminosarum biovarphaseoli from Kenyan soils
(1989)
Thermotolerant strains ofRhizobium leguminosarum biovarphaseoli were isolated from nodules ofPhaseolus vulgaris grown in Kenyan soils, where high soil temperatures often exceed 40°C during sunny days. The isolates varied ...
Phosphorus and cultivar effects on nodulation, growth, dinitrogen fixation and yield of cowpea (Vigna unguiculata)
(1984)
In field experiments at Katumani in 1982, cowpea cv. Katumani 80 and Vita 4 were grown in chromic luvisol soils and treated with 15N-labelled ammonium sulphate at 20 kg N/ha, with or without 70 kg P/ha. Differences in ...