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Nitrogen recovery by alley-cropped maize and trees from 15N-labeled tree biomass in the subhumid highlands of Kenya
(Springer-Verlag, 2000-05)
The effectiveness of tree-leaf biomass as a source of N to crops in agroforestry systems depends on the rate at which crops can obtain N from the biomass. A study was conducted to determine the fate of 15N labeled, ...
Effects of Organic and Mineral Fertilizer Inputs on Maize Yield and Soil Chemical Properties in a Maize Cropping System in Meru South District, Kenya
(Kluwer Academic Publishers, 2007)
Soil nutrient depletion as a result of continuous cultivation of soils without adequate addition of external inputs is a major challenge in the highlands of Kenya. An experiment was set up in Meru South District, Kenya in ...
Potential role of cereal-legume intercropping systems in integrated soil fertility management in smallholder farming systems of sub-Saharan Africa
(Third RUFORUM Biennial Meeting, 201-09)
The sub-Saharan Africa’s population is growing exponentially and it has to fulfill its food and nutrition requirement. An attractive strategy for increasing productivity and labour utilization per
unit area of available ...
Effects of selected soil and water conservation technologies on nutrient losses and maize yields in the central highlands of Kenya
(Elsevier Masson, 2014-05)
Mitigating nutrient loss is a prerequisite of sustainable agriculture in the tropics. We evaluated three soil and water conservation technologies (mulching, minimum tillage and tied ridging) for two cropping seasons (long ...
Effects of Different Maize (Zea mays L.) – soybean (Glycine max (L.) Merrill) Intercropping Patterns on Soil Mineral-N, N-uptake and Soil Properties
(African Journal of Agricultural Research, 2014-01)
The adoption of ISFM technologies such as maize-soybean intercropping system is being promoted as one of the options to address low soil fertility and crop productivity among the farmers of the central highland of Kenya. ...
Length of growing season, rainfall temporal distribution, onset and cessation dates in the Kenyan highlands
(Elsevier Masson, 2014-05)
Dependence on uncertain rainfall and exposure to unmitigated climate risk are major obstacles in efforts to sustainably intensify agricultural production and enhance rural livelihoods. There is generally enough seasonal ...
Enhancement of food productivity using leguminous shrubs in the Eastern highlands of Kenya
(Elsevier, 2003)
Declining soil productivity is a major challenge facing smallholder farmers in eastern highlands of Kenya. This
decline is caused by continuous cultivation of soils without adequate addition of external inputs in form of ...
Effect of Plant Biomass, Manure and Inorganic Fertiliser on Maize Yield in the Central Highlands Of Kenya
(African Crop Science Journal, 2007-08)
Soil fertility degradation remains the major biophysical cause of declining per capita crop production on smallholder farms in sub-Saharan Africa. Appropriate soil fertility regimes, are therefore, critical for improved ...
Effect of selected organic materials and inorganic fertilizer on the soil fertility of a Humic Nitisol in the central highlands of Kenya
(Wiley [Commercial Publisher, 2009-09)
The effect on soil fertility of applying particular organic resources to a humic Nitisol in the central highlands of Kenya was studied. The organic resources (Calliandra calothyrsus, Leucaena trichandra, Tithonia diversifolia, ...
Alley cropping of maize with calliandra and leucaena in the subhumid highlands of Kenya: Part 2. Biomass decomposition, N mineralization, and N uptake by maize
(Kluwer Academic Publishers, 1999)
A major challenge in developing agroforestry approaches that utilize tree-leaf biomass for provision of N to crops is to ensure synchrony between the N released from decomposing prunings and N demand by crops. A study was ...