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Now showing items 298-317 of 680
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Evaluation of relative resistance of four cowpea (Vigna unguiculata (L.) Walp) varieties to the black cowpea aphid (Aphis Craccivora) in South-eastern Botswana
(Botswana University of Agriculture & Natural Resources, 2011)Cowpea (Vigna unguiculala (L.) Walp) is an important food legume in many tropical countries, but its production is seriously constrained by insect pests. Aphis craccivora is one of the major pests of cowpea worldwide. ... -
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 ... -
Evaluation of the nutritional potential of safflower (Carthamus tinctoriiis L.) leaves, seed and cake after oil extraction to be used as animal feed
(Botswana University of Agriculture & Natural Resources, 2017-09)Safflower is an annual oil seed crop adapted to arid and saline regions of the world, is a potentially novel food and medicine source, which has not been fully explored in the last century. Safflower’s ability to forage ... -
Evaluation of three breeding cycles for seedling weight of switchgrass, big bluestem, and indiangrass.
(Crop Science Society of America, 2014-07-01)A modified form of restricted, recurrent phenotypic selection was used to select for seedling shoot weight in switchgrass (Panicum virgatum L.), big bluestem (Andropogon gerardii Vitman), and indiangrass [Sorghastrum nutans ... -
Evaluation of two Non-Edible, Wild Indigenous Botswana Crops (Croton megalobotrys (Motsebi/Letsebi/Moshoole) and Ricinus communis (Mokhure)) as Potential Feedstocks for Petroleum and Cosmetic Industries
(EAST AFRICAN NATURE & SCIENCE ORGANIZATION, 2021-12-07)Croton megalobotrys and Ricinus cummunis plants produce high-quality nonedible seed oils at relatively high quantities of 39.65 ± 0.06 % w/w to 53.74 ± 0.04 % w/w. The Iodine values of 85.97 ± 1.62 g I2/100 g to 96.51 ± ... -
Evaluation of variety alone or in combination with diatomaceous earth or pyriproxyfen (an insect growth regulator) for managing plodia Interpunctella (hubner) (lepidoptera; pyralidae) on stored groundnuts (arachis hypogaea L.)
(Botswana University of Agriculture & Natural Resources, 2018-09)In storage, insect pests cause considerable losses to stored groundnut (Arachis hypogaca L.) and one of the major storage pests worldwide is Plodia interpunctella (Hubner). Two experiment were conducted to evaluate the ... -
Excess rumen degradable protein influences the rate of development and glucose metabolism of fertilized sheep ova
(2017-11-20)The level of protein degradability in ruminant diets, notably in the peri-ovulatory period and during the early weeks of gestation, can significantly affect conceptus survival and may even interfere with normal control of ... -
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 ... -
Exposure of Melia azedarach fruits to Eimeria lowers oocyst output in yearling Tswana goats
(Elservier, 2008-05)This study assessed the effects of Melia azedarach fruits on oocyst output of goats naturally infected with Eimeria species. The nineteen 12-month-old male Tswana goats weighing 21.5 kg were allocated to either a grass hay ... -
Expression of cytokine genes at tick attachment and control sites of Namaqua Afrikaner, Dorper and South African Mutton Merino sheep
(Elservier, 2021-02)Cytokines are immune response components important in innate immunity and inflammatory response. They are harnessed as part of local immunological responses by animals to combat local infections and/or infestations. This ... -
Extraction of Pesticides from Plants using Solid Phase Microextraction and QuEChERS
(South African Journal of Chemistry, 2013)A study employing dispersive solid phase extraction in the formof the quick, easy, cheap, effective, rugged and safe (QuEChERS) method and solid phase microextraction (SPME) for the cleanup of pesticides in plant samples ... -
Eye infections in farmed Ostriches(Struthio cuniclus) oil selected farms in Gaborone and Lobatsc districts, Botswana
(Botswana University of Agriculture & Natural Resources, 2005)A study to investigate an outbreak of keratoconjunctivitis among grower ostriches (Struthio camclus) was undertaken on two farms in Lobatsc and Gaborone districts, Botswana. Thirty ostriches (34.1%) showed signs of ... -
Fabrication of Prussian Blue/Multi-Walled Carbon Nanotubes Modified Glassy Carbon Electrode for Electrochemical Detection of Hydrogen Peroxide.
(ESG, 2012-05-01)Prussian blue nanoparticles synthesized from K4[Fe(CN)6]3H2O and Fe(NO3)3.9H2O, were characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), Scanning electron ... -
Factors associated with perceived effectiveness of the out-of-school youth development and economic empowerment program in Botswana
(Botswana University of Agriculture & Natural Resources, 2008)The purpose of the descriptive-correlational study was to determine the perceived effectiveness of the out-of-school youth development and economic empowerment program by youth and youth officers. The target populations ... -
Factors affecting calving percentage in the four different ranching systems practiced by livestock farmers in the southern region of Botswana
(Botswana University of Agriculture & Natural Resources, 2008)Productivity in the livestock industry in Botswana can only prosper, be viable, competitive and remain a major source of income and employment opportunity in the rural areas, if there is an increase in calving percentage ... -
Factors influencing academic performance of pupils in the primary school leaving examination results for agriculture in Botswana
(Botswana University of Agriculture & Natural Resources, 2023-05)The purpose of the study was to investigate the factors influencing performance of students in the primary school leaving examinations (PLSE) results for Agriculture in the Botswana. This national study targeted a total ... -
Factors influencing ambient concentrations of 210Pb and 7Be over the city of Edinburgh (55.9°N, 03.2°W)
(Elsevier, 2006)Concentrations of 210Pb and 7Be in air were continuously monitored, using a high-volume air sampler and a high-resolution gamma-ray spectrometer, during the period of July 2002 to June 2003 at the University of Edinburgh ... -
Factors Influencing Methane (CH4) and Nitrous oxide (N2O) Emissions from Soils: A Review
(International Journal of Forest, Soil and Erosion, 2013-08)Methane (CH4 ) and nitrous oxide (N2O) are the two most important non-carbon dioxide (CO2 ) greenhouse gases (GHGs) that play a critical role in shaping the global climate. Their concentrations in the atmosphere have been ... -
Factors underlying communal beef cattle marketing decisions in Botswana: The role of public and private transfers
(Botswana Institute for Development Policy Analysis, 2015-11)This article examines factors underlying communal beef cattle marketing at a household level in Botswana, with emphasis placed on the role of public and private transfers. Results show that public and private transfers ... -
Farmers’ knowledge in the cropping systems of Northern KwaZulu-Natal, South Africa: Current challenges and solution for sustainable future food production
(Academic Journals, 2009)Most African farmers involved in food production in South Africa; practice peasant farming for consumption and for retail sale in the informal market, local communities and street corners in the cities. These farmers are ...
