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Now showing items 21-30 of 51
Pastoralists’ Perception and Ecological Knowledge on Savanna Ecosystem Dynamics in Semi-arid Botswana
(JSTOR, 2012)
We investigated vegetation dynamics in relation to livestock grazing as perceived by pastoral farmers in different regions of Botswana. A structured questionnaire was used to collect farmers’ understanding of vegetation ...
Symbiotic performance of grain and wild herbaceous legumes in the Okavango Delta and Tswapong region of Botswana
(Springer Verlag, 2017)
The low inherent soil fertility, especially nitrogen (N) constrains arable agriculture in Botswana. Nitrogen is usually added to soil through inorganic fertilizer application. In this study, biological nitrogen fixation ...
Woodland resources and management in southern Africa.
(Klaus Hess Publishers, 2018)
The countries of southern Africa have an average forest cover of 32% with most forest situated in the tropics. These dry to moist forests are deciduous with a few evergreen species. The open canopy allows enough light to ...
Antioxidant property of edible mushrooms collected from Ethiopia.
(Elsevier, 2014-02-13)
Two cultivated (P. ostreatus and L. edodes) and five wild (L. sulphureus, A. campestris, T. clypeatus, T. micro-carpus and T. letestui) edible mushrooms were analyzed for their antioxidant activities, total phenolics, total ...
Scheduling irrigation from wetting front depth.
(Elsevier, 2016-07-07)
Irrigation scheduling is often based around the analogy of a ‘tipping bucket’, and the measurement or prediction of the amount of water stored within the bucket. We compare this conventional approach of scheduling with ...
Control of Cowpea Weevil, Callosobruchus Maculatus (F.) (Coleoptera: Bruchidae), Using Natural Plant Products
(MDPI, 2014-12-31)
A laboratory study was conducted to investigate the effects of natural products on the reproduction and damage of Callosobruchus maculatus, the cowpea weevil, on cowpea seeds at Botswana College of Agriculture in Gaborone, ...
Effects of combined apertures on the magnitudes of electric coupling coefficients of combline resonators
(IOP Publishing, 2014)
The effects of differently positioned and combined apertures on the magnitudes of electric coupling coefficients of two identical combline resonators are analysed. Coupling coefficient, k-vertical symmetry provides greater ...
Sorghum yield and associated satellite-derived meteorological parameters in semi-arid Botswana
(African Crop Science Journal, 2015-03-15)
Africa has sparse meteorological stations, hence it is increasingly common to use satellite-derived meteorological parameters, where in-situ measuremnts are not available. The objective of this study was to determine if ...
Determination and source apportionment of selected heavy metals in aerosol samples collected from Sebele
(Science Publication, 2013-05-17)
Bush fires and dust in the dry winter months establish moderately high background levels of aerosols. Emissions into the atmosphere by copper mines, coal mines and vehicular emissions are all possible sources of air pollution ...
Potassium→ammonium exchange of two benchmark soils from Botswana and its implication for nitrogen economy of the soils
(Taylor & Francis, 2014)
Ion exchange preferences for NH4+ and K+ by soil exchanger surface can greatly affect the NO3− leaching into groundwater and nitrogen-use efficiency in agricultural production. Since NH4+ and K+ salts are usually applied ...