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Now showing items 11-20 of 29
Effects of site preparation for afforestation on methane fluxes at Harwood Forest, NE England
(Springer, 2009-05-06)
A field experiment was established at Harwood Forest to investigate the effects of three forest management practises (drainage, mounding and fertilisation) on methane (CH4) emissions and environmental variables (soil ...
Influence of flooding on bambara groundnut (Vigna subterranea L.) germination: Effect of temperature, duration and timing
(Academic Journals, 2009)
To evaluate the response of bambara groundnut seeds to flooding stress a laboratory study (experiment 1) and a greenhouse study (experiment 2) were conducted. In the laboratory study seeds of a brown-coloured local bambara ...
Effect of control plot density, control plot arrangement, and assumption of random or fixed effects on nonreplicated experiments for germplasm screening using spatial models
(Crop Science Society of America, 2005)
Early generation selection experiments typically involve several hundred to thousands of lines. Various systematic and statistical techniques have been developed to increase effectiveness and efficiencies in such experiments, ...
Lucerne, Lablab and Leucaena leucocephala Forages: Production and Utilization for Livestock Production
(Asian Network for Scientific Information, 2003)
An overview is given of three legume pastures with potentials as sources of crude protein and other important nutrients for livestock production in Botswana. This paper reviews distribution, plant description, agronomic ...
Comparison of Laboratory pH Buffer Methods for Predicting Lime Requirement for Acidic Soils of Eastern Botswana
(Taylor & Francis, 2004)
The suitability of pH buffer methods that determine lime requirement (L.R.) of acid soils of the eastern region of Botswana has not been determined, and the soil physiochemical properties that influence L.R. are not known. ...
Experimental and numerical evaluation of analytical volume balance model for soil water dynamics under drip irrigation
(Soil Science Society of America, 2003)
The interpretation and subsequent modeling of soil water dynamics in presence of active plant uptake remains a challenge. Despite many simplifying assumptions in their development, analytical models offer simple and easy ...
Azanza garckeana: A Valuable Edible Indigenous Fruit Tree of Botswana
(Asian Network for Scientific Information, 2004)
Azanza garkeana (morojwa) is a valuable edible indigenous fruit tree species confined to east and southern Africa. Because of its multiple use the species is selected and retained by farmers in Botswana when they clear the ...
Contribution of red alder to soil nitrogen input in a silvopastoral system
(Springer-Verlag, 2007-01-11)
Studies on Alnus rubra Bong. (red alder) were carried out to assess its potential for use as a component of a silvopastoral system. Comparison was between two treatments: red alder at 400 stems ha−1 (silvopasture) and red ...
Allelopathic activity of sunflower (Helianthus annuus L.) on growth and nodulation of Bambara Groundnut (Vigna subterranea (L.) Verdc.)
(Asian Network for Scientific Information, 2007)
Laboratory and greenhouse experiments were conducted to determine the allelopathic activity of sunflower (Helianthus annuus) on seed germination, seedling growth, flowering and nodulation of bambara groundnut (Vigna ...
Agricultural Tractor Ownership and Off-Season Utilisation in the Kgatleng District of Botswana
(Shin-Norinsha Co., 2002)
In recent years tractor power usage has increased among the smallholder farmers in
Botswana due mainly to the influence of government loans, subsidies and grants on draft
power financing. A study on tractor owners and ...