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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 ... -
Intracavity pulse compression with glass: a new method of generating pulses shorter than 60 fsec
(Optical Society of America, 1983)The introduction of a glass prism in a ring dye laser is shown to provide simultaneous wavelength selection and pulse compression. -
Functional Evaluation of Pedotransfer Functions for the Estimation of Soil Hydraulic Properties
(Elsevier, 1992-09)Pedotransfer functions (PTFs) are often used for estimating hydraulic properties such as the moisture retention characteristic and the pressure head-hydraulic conductivity relationship. Both properties are essential for ... -
A deterministic evaluation analysis applied to an integrated soil-crop model
(Elsevier, 1995-08)The WAVE-model (Water and Agrochemicals in the soil and Vadose Environment), simulating one-dimensional transport of water, solute and heat in the unsaturated zone, was used to simulate the behaviour of water and nitrogen ... -
Impact of residue quality on the C and N mineralization of leaf and root residues of three agroforestry species
(Springer Verlag, 1996)A laboratory incubation experiment with 15N labeled root and leaf residues of 3 agroforestry species (Leucaena leucocephala, Dactyladenia barteri and Flemingia macrophylla) was conducted under controlled conditions (25 C) ... -
Predicting the Decomposition Patterns of Tree Biomass in Tropical Highland Microregions of Kenya
(Kluwer Academic Publishers, 1996)Decomposition- and nitrogen-release patterns of biomass from three agroforestry multipurpose trees (Calliandra calothyrsus, Cordia africana and Grevillea robusta) were investigated in four contrasting environments ... -
Dispersion measurements with white-light interferometry
(1996)White-light interferograms provide a simple, accurate, and physically intuitive picture of what happens to broadband optical pulses on transmission through, or reflection from, common optical materials. Quantitative ... -
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 ... -
Adolescent transition to coitus and premarital childbearing in sudan: a biosocial context
(Cambridge University Press, 1999) -
The effects of woodfuel consumption in the ASAL areas of kenya: the case of marsabit forest
(Wiley, 2000-03)In the arid and semiarid lands (ASAL) of Kenya, fuelwood and charcoal constitute 95–98% of the total energy demand for cooking, heating and lighting. The resultant deleterious ecological effects are severe and need urgent ... -
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, ... -
Phenotypic nutrient up-take differences in an alley cropping system in semi-arid Machakos, Kenya
(IOS Press, 2001-01-01)Alley cropping of Cassia siamea and maize was studied in semi-arid Kenya for soil fertility improvement. Katumani composite maize was planted except in the short rains of 1988 (SR88) when a hybrid variety was sown. Therefore ... -
Suppression of Root-knot Nematode by Mycosymbionts on Pyrethrum (Chrysanthemum cinerariefolium Vis.)
(AJOL, 2002)Five arbuscular mycorrhiza fungi (AMF) obtained from pyrethrum fields were screened for efficacy in improving pyrethrum (Chrysanthemum cinerariefolium Vis.) growth and in suppressing a root-knot nematode, Meloidogyne hapla ... -
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 ... -
Soil Invertebrate Macrofauna Composition within Agroforestry and Forested Ecosystems and their Role in Litter Decomposition in Embu, Kenya
(CIAT, 2004)Adequate food to meet the needs of an ever-increasing population is a major challenge for most developing countries, especially in the tropics. Despite this, few new technical packages capable of increasing net returns ... -
Nitrogen fertilizer equivalencies of organics of differing quality and optimum combination with inorganic nitrogen source in Central Kenya
(Kluwer Academic Publishers, 2004-02)Decline in crop yields is a major problem facing smallholder farmers in Kenya and the entire Sub-Saharan region. This is attributed mainly to the mining of major nutrients due to continuous cropping without addition of ... -
Impact of water quality on macroinvertebrate assemblages along a tropical stream in Kenya
(Wiley, 2004-09)Prudent management of lotic systems requires information on their ecological status that can be estimated by monitoring water quality and biodiversity attributes. To understand environmental conditions in Gatharaini drainage ... -
Water Resources Utilization, Conflicts and Interventions in the Tana Basin of Kenya
(FWU Water Resources Publications, 2005)Water is an essential resource necessary for social and economic development of any country. When it is available in sufficient quantities and acceptable quality, it is extensively used for domestic, agricultural and ... -
Uses and conservation of some highland species of the genus Sansevieria Thunb in Kenya
(African Crop Science Society, 2005)Approximately 75 species constitute Sansevieria Thunb, a tropical terrestrial genus of Asparagaceae Juss family. About 40 of these species are found in E.A, while 27 are endemic to Kenya. Information on ethnobotany and ... -
Exploring diversity in soil fertility management of smallholder farms in western Kenya: I. Heterogeneity at region and farm scale
(Elsevier Masson, 2005-11)The processes of nutrient depletion and soil degradation that limit productivity of smallholder African farms are spatially heterogeneous. Causes of variability in soil fertility management at different scales of analysis ...
