Browsing Theses and Dissertations by Issue Date
Now showing items 21-40 of 126
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Sprawl dynamics and the development of effective smart growth policies
(The Pennsylvania State University, 2006-11-15)Sprawling urban development is a major driving force of global environmental change. Its impact on Earth system functions is likely to increase in the future when the proportion of the world’s population living in urban ... -
Wastewater treatment using vegetated submerged bed constructed wetlands for nitrogen removal
(Washington State University, 2006-12)Vegetated submerged bed (VSB) constructed wetlands are engineered, low operation and maintenance cost wastewater and stormwater treatment technologies primarily designed for small facilities. The objectives of this ... -
Iowa teachers' perceptions regarding the effectiveness of agriculture teacher education programs in addressing teaching standards and criteria
(Iowa State University, 2007)The purpose of this study was to explore and describe perceptions of secondary school-level teachers of agriculture in Iowa regarding the effectiveness of agricultural education teacher preparation programs in addressing ... -
The utilization by domestic ruminants in Botswana of treatment diets containing cereal crop stovers treated with urea or urea and molasses
(University of the Free State, 2007-03)The studies were aimed at examining the effects of treatment with urea or urea and molasses on the physical and chemical composition of stovers of sorghum, maize and millet and assessing the potential of these treated ... -
Influence of culture and stakeholders In Botswana’s dairy system
(The University of Queensland, 2007-12-12)ABSTRACT The government of Botswana initiated dairy industry development in the early 1980’s to reduce the country’s dependence on milk imports from neighbouring countries, particularly South Africa and Zimbabwe. The ... -
Effects of site preparation for afforestation on soil properties and greenhouse gas emission
(The University of Edinburgh, 2009)Forest plantations in the UK are often established on seasonally waterlogged peaty gley soils which often require site preparation (drainage and mounding) to lower the water table and prepare planting positions. Substantial ... -
The image of agriculture education in Botswana
(Murdoch University, 2009)This study examines agricultural education in Botswana among students and teachers. Since independence in 1966 to the present time, agricultural production has declined from about 40 percent to about 3 percent. Harsh ... -
Chemical thinning of morula fruit (Sclerocarya birrea subspecies caffra Hochst) using benzyladenine
(Botswana University of Agriculture & Natural Resources, 2009-08)A field experiment was conducted at Gabane Veld Product Research and Development (VPR&D) morula orchard from August 2008 to May 2009. to evaluate the effects of benzyladenine (BA) on fruit set and ... -
Protein nutrition of livestock grazing high quality pasture
(Lincoln University, 2010)This thesis describes a series of four experiments designed to evaluate the role of the supply of protein in livestock grazing high quality pasture during mating and during pregnancy. The first two studies investigated the ... -
Identification of anaplasma marginale proteins up-regulated during infection of the tick vector
(Washington State University, 2010-08)The transition between infection of the mammalian host and colonization of an arthropod vector is required for ongoing transmission of a broad array of pathogens, from viruses to protozoa. Understanding how this transition ... -
Response of winter wheat (Triticum aestivum L.) genotypes to irrigation at different growth stages in Botswana
(Botswana University of Agriculture & Natural Resources, 2010-08)A field experiment was conducted during 2009/2010 winter season to study the response of two winter wheat (Triticum aestivum L) cultivars (Baviaans and 14SAWYT306) to irrigation at different growth stages (from emergence ... -
The Chemical composition of Crop residues and their effects on Growth rate and Carcass characteristics of yearling Tswana sheep
(Botswana University of Agriculture & Natural Resources, 2010-09) -
Morphological and physiological responses of bambara groundnut (vigna subterranea l.verde) to short periods of water deficit stress during different developmental stages.
(Botswana University of Agriculture & Natural Resources, 2010-09)The response pattern of morphological traits and physiological processes of bambara groundnut (Vigna Subterranean L. Verde) to short periods of water stress imposed at different growth and developmental stages and their ... -
Enhancing the quality of performance assessment in Agriculture in Botswana schools
(University of Pretoria, 2011-03-31)The quality of education in Botswana is not yet up to standard as there has been emphasis on attainment of Universal Basic Education. Quality in education encompasses a number of factors such as the development of the ... -
Evaluation of the diversity and pest status of fruit flies on marula, Sclerocarya Birrea in Gabane, Mochudi and Rasesa
(Botswana University of Agriculture & Natural Resources, 2011-07)Manila (Sclerocarya birrea) is one of the most useful indigenous trees in Africa. The fruits of marula are used to produce useful products such as juice, jam and beer. The seed kernels are very rich in proteins and can be ... -
Evaluation of bacillus thuringiensis (var. kurstaki), spinosad and cypermethrin for the control of diamondback moth (plutella xylostella l.) on cabbage.
(Botswana University of Agriculture & Natural Resources, 2011-07)An experiment was conducted al the Botswana College of Agriculture (BCA), Gaborone, Botswana (24° 55’S, 25" 95’E) at an altitude of 998m above sea level to evaluate the effectiveness of Bacillus thuringiensis(Bt), ... -
Identification and classification of finger millet (Elcusine coracana ) accessions using morphological traits and DNA finger printing
(Khon Kaen University, 2012)Information on genetic diversity of germplasms is very important for every breeding program, thus evaluation and characterization of germplasms is the first and most important step for any breeding program. Different tools ... -
Effects of plant population on growth, development and oil yield of safflower (Carthamus tinctorious L.)
(Botswana University of Agriculture & Natural Resources, 2012-09)Two field trials were done in the winter of 2010 and summer of 2010/2011 to evaluate the effects of plant density. on the growth, development and yield of safflower. The results showed that plant density and season of ... -
Biology and Ecology of Glyphosate-Resistant Giant Ragweed
(Purdue University, 2013)Giant ragweed (Ambrosia trifida L.) is a competitive annual plant found in disturbed landscapes and is the most troublesome weed in Indiana and the US Corn Belt. It is one of the most common and problematic weeds in corn ... -
Relating sorghum yield to growing seasonal weather conditions for Chobe and Barolong agricultural district, Botswana
(Botswana University of Agriculture & Natural Resources, 2013-06)Growing season rainfall is the most important factor in rain-fed arable agriculture in semi-arid climates. Knowledge of rainfall distribution is needed to make farmers aware of possible crop yield obtainable during and ...