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Now showing items 81-100 of 676
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Unit groups of cube radical zero commutative completely primary finite rings
(Hindawi Publishing Corporation, 2005-07)A completely primary finite ring is a ring R with identity 1 = 0 whose subset of all its zero divisors forms the unique maximal ideal J. Let R be a commutative completely primary finite ring with the unique maximal ideal ... -
Spatial variability of measured soil properties across site‐specific management zones
(Soil Science Society of America Journal, 2005-09)The spatial variation of productivity across farm fields can be classified by delineating site‐specific management zones. Since productivity is influenced by soil characteristics, the spatial pattern of productivity could ... -
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 ... -
Challenges for agricultural diversification in Botswana under the proposed SADC-EU economic partnership agreement (EPA)
(Botswana Institute for Development Policy Analysis, 2005-11)Botswana has been pursuing the economy-wide objective of economic diversification for the past three decades. This paper examines the challenges Botswana’s Agriculture is likely to face under the EU/ACP Economic Partnership ... -
Rebrowsing by elephants three years after simulated browsing on five woody plant species in northern Botswana
(Southern African Wildlife Management Association (SAWMA), 2005-11-10)Utilization by the African elephant (Loxodonta africana) of five tree species of different acceptability was assessed on trees used three years earlier in a simulated browsing experiment. The experiment included two levels ... -
Inventories of fallout 210Pb and 137Cs radionuclides in moorland and woodland soils around Edinburgh urban area (UK)
(Elsevier, 2006)Inventories of fallout 210Pb and 137Cs have been measured in moorland and woodland soils around the Edinburgh urban area, using a high purity germanium detector. The 210Pb inventories in moorland soils were relatively ... -
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 ... -
Assessment of groundnut (Arachis hypogaea L.) genotypes for drought tolerance in Botswana
(Botswana University of Agriculture & Natural Resources, 2006)Groundnut (Arachis hypogaea L.) production in Botswana is adversely affected by erratic and unpredictable rainfall resulting in various periods of drought. As part of a programme aimed at developing drought-tolerant ... -
Deactivation Effects of Polyethylene Glycol (PEG) on in vitro Dry Matter Digestibility of Colophospermum mopane (Mophane) and Acacia Browse Trees in Botswana
(Asian Network for Scientific Information, 2006)This trial evaluated the deactivation effects of PEG 6000 on in vitro dry matter digestibility (IVDMD) of Colophospermum mopane (Mophane) and acacia browse trees. Samples were collected from Sebele Content farm except for ... -
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' ... -
Monitoring production, health and marketing of indigenous Tswana pigs in Ramotswa village of Botswana
(Fundación CIPAV, 2006)The purpose of this study was to monitor the production, health and marketing of indigenous Tswana pigs in Ramotswa village of Botswana over a 12-month period. Farmers who rear indigenous Tswana pigs were identified by ... -
Improved crop-management techniques for better groundnut (Arachis liypogaea L.) production in Western Kenya
(Botswana University of Agriculture & Natural Resources, 2006)Poor agronomic and husbandry practices are largely responsible for the low yields of groundnuts in Western Kenya. This study was undertaken to develop agronomic practices for increasing groundnut yields by small-hold ... -
Effect of Benzyladenine Plus Gibberellins and Gibberellic Acid on Yield and Yield Components of Cucumber (Cucumis sativus L. cv. ‘tempo’)
(Asian Network for Scientific Information, 2006)Two greenhouse trials were carried out to evaluate the effect of benzyladenine plus gibberellins (GA4+7) and gibberellic acid (GA3) on yield and yield components of cucumber. Gibberellic acid significantly increased leaf ... -
Poverty reduction through alternative livelihoods in Botswana's desert margins
(Sabinet Journals, 2006-01-01)Despite rapid economic growth recorded in the last decades following independence in 1966, poverty is still rampant especially in the rural areas of Botswana. Poverty reduction has been on the agenda for many ... -
Determinants of herd productvity in Botswana: a focus on land tenure and land policy
(University of KwaZulu-Natal, 2006-02)This study attempts to identify factors responsible for determining differences in the productivity of cattle managed by communal and private livestock farmers in the southern region of Botswana during 1999/2000. It is ... -
Self-Efficacy development in a one-to-one Mentoring Strategy For Faculty Integrating Technology in aagricultural education
(Association for the Advancement of Computing in Education (AACE), 2006-03-19)This paper describes the experiences of a graduate student and a faculty member in a one-to-one mentoring strategy to integrate technology instructions in agricultural education. In this paper the experiences of a graduate ... -
Elephant impact on shoot distribution on trees and on rebrowsing by smaller browsers
(Elservier, 2006-10)In order to determine the effects of a megaherbivore, the African elephant (Loxodonta africana) on browse available for mesoherbivores, we assessed the vertical distribution of shoots (< 6 mm in diameter) on trees with ... -
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 ... -
Wet deposition of 210Pb aerosols over two areas of contrasting topography
(Institute Of Physics Publishing Ltd, 2006-11-24)Deposition fluxes of 210Pb on low and moderately high-elevation sites of Edinburgh (Scotland) and mid-Wales, respectively, have been measured. The excess 210Pb fluxes in moorland Edinburgh soils did not vary significantly ...