Browsing Theses and Dissertations by Issue Date
Now showing items 1-20 of 132
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Plants Poisonous to Livestock in Botswana
(South Dakota State University, 1982)Livestock plant poisoning is very common in Botswana. Two plants, Dichapetalum cymosum and Pavetta harborii, are especially notorious for causing large-scale mortality in some areas of the country. In 1975, for instance, ... -
Vegetation and soil moisture responses following three big sagebrush control methods
(University of Wyoming, 1986-05) -
Phosphate sorption and its relation to soil properties
(Agricultural University of Norway, 1986-12-11)In order to study the phosphorus sorption characteristics of six soils from Botswana, 2g of soil were equilibrated at 20°C in 0.01M CaCl2 containing various amounts of dissolved phosphate (0-900 pg P/g soil for two days). ... -
The training of Agricultural Demonstrators at the Botswana Agricultural College: A critical analysis with emphasis on the curriculum content
(Reading University, 1991-08)The majority of people in Botswana depend on agriculture for their livelihood. Through extension, the development programmes providing farmers with inputs and information on the latest farming techniques to improve ... -
The role and potential of tree growing on farms in the Barolong district – Botswana
(University of Aberdeen, 1992)In the Barolong District the depletion of the woodland resource, upon which households are dependent for fuelwood, poles, fencing material, livestock forage and protection of cropland soil, is a cause for concern. The ... -
Effects of nutritionally-mediated increases in the plasma ammonia concentrations of donor ewes on the in vivo and subsequent in vitro development and metabolism of their embryos
(University of Aberdeen, 1994)A review of the literature indicated that high levels of protein in ruminant diets can lower fertility. Ammonia from proteins that are rapidly degraded by the rumen microbes has been suggested as the factor that may affect ... -
The dynamics of hydraulic lift in peach tree water relations
(West Virginia University, 1995) -
The design and use of agroforestry systems in Botswana
(University of Edinburgh, 1996)Botswana is a semi-arid country which has 80% of the population living in rural areas and engaged mainly in agriculture. Rural populations in Botswana depend heavily on woodlands for fuelwood, fencing poles, building and ... -
The effect of nitrogen on the yield and quality of vegetable amaranth
(Botswana University of Agriculture & Natural Resources, 1999-02)The effect of nitrogen on the yield and quality of three species of vegetable amaranth, namely; Amannthus hypochondriacus, A.tricolar, and A.hyridus was studied under field conditions for three different planting times ... -
Evaluation of Stover management practices or ameliorative strategies on the utilization of tanniferous feeds by ruminants
(The University of Guelph, 1999-08)Seven experiments which hcluded one fieIdlagronomy, four in vitro and two in vivo triais were carrieci out to (i) determine the optimum time of harvesbng and storage methods that preserved the nutritive quality of make and ... -
Assessment of the species Penaeus latisulcatus and Penaeus japonicus in the shallow-water shrimp trawl fishery at the Sofala Bank, Mozambique.
(University of Bergen, 2000)Commercial data from 1995 and 1996 of the Pescamar fishing company in Mozambique were used to study the stock dynamics of the two shrimp species Penaeus latisulcatus (marfil) and Penaeus japonicus (tiger). These species ... -
The effects of drought on plant response in Northern Chehuahuan Desert rangelands
(New Mexico State University, 2001-08)Short term grazing trials were started in June 1992 and continued until 2000; The pastures were grazed in June and September each year except 1996, 1999 and 2000 because of drought. The trials were conducted at New Mexico ... -
Current state and updating of heat and moisture production of poultry and their housing systems
(Iowa State University, 2002)An extensive literature review and comparative analysis of heat and moisture production (HP, MP) of various poultry types (layers, broilers, and turkeys) and their housing systems indicated that total heat production (THP, ... -
Transmission of campylobacter Jejuni in broiler chickens
(Massey University, Palmerston North, 2002)Investigations were carried out aimed at identifying potential sources of transmission of Campylobacter jejuni to broiler chickens, determining whether boots can mechanically transmit C. jejuni to susceptible chickens, ... -
The Influence of topography and vegetation canopy on the deposition of atmospheric particulates Studied with 210Pb and 137Cs soil inventory measurements
(University of Edinburgh, 2003)Naturally occurring radioactive isotopes of 210Pb and 7Be in the atmosphere, plant material and soil have been used to investigate the transport and removal of atmospheric aerosols from the atmosphere by precipitation and ... -
The impact of transaction costs on the choice of cattle markets in Mahalapye district, Botswana
(University of Pretoria, 2004-07)The objective of this study is to identify the transaction costs factors and household characteristics that influence the farmers’ choice of cattle marketing channels in Mahalapye district, Botswana. The marketing channels ... -
Herbaceous plant and soil nutrient patterns along grazing gradients of the hard veld and sand veld areas of Botswana
(University of Botswana, 2005-07)Vegetation changes associated with grazing by domestic livestock have been studied throughout the major grazing savannas of the world. Changes have been documented to differ from area to area depending on stock composition, ... -
Reservoir tillage for semi-arid environments
(Cranfield University, 2005-10)The ever increasing world population, the decline in suitable agricultural land and food production levels require that new methods are found to increase land productivity or to bring into production land which is marginal. ... -
Interactions between woody plants, elephants and other browsers in the Chobe riverfront, Botswana
(Norwegian University of Science and Technology, 2005-11)This thesis examines the interaction between woody plants, elephants and other browsers in a semi-arid savanna in northern Botswana, southern Africa. Particularly I studied how woody plants respond to herbivory, how browsers ... -
An analysis of pre-service teacher preparation and instructional supervisory practices in Agricultural Education
(Iowa State University, 2006)his dissertation contained three articles that explored teacher preparation in Agricultural Education. The first article was a descriptive-correlational study; it described the relationship between pre-service teachers' ...
