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Missing covariates in multiple linear regression when the data is missing at random
(Botswana University of Agriculture & Natural Resources, 2008)
The occurrence of missing values is frequent in data collected for different uses such as in surveys, censuses, balanced experiments. On the other end most statistical analysis methods have been developed for complete ...
The heavy metal content of Gaborone secondary sewage effluent in Botswana
(Botswana University of Agriculture & Natural Resources, 2005)
The objective of this study was to determine the heavy metal content of the Gaborone
secondary effluent in Botswana before its discharged to the Notwane river. Secondary
effluent water was sampled every month for one ...
The major cations and trace elements in Notwane river, Botswana and its suitability for irrigation
(Botswana University of Agriculture & Natural Resources, 2008)
Notwane river in Botswana, is a perennial river in which the treated secondary or tertiary sewage effluent from Gaborone activated sludge treatment plant is discharged to. The objective of this study was to evaluate the ...
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 ...
Effects of plant density on growth parameters and yield of sugar bean (Phaseolus vulgaris L.) in Swaziland
(Botswana University of Agriculture & Natural Resources, 2005)
Field bean (Phaseolus vulgaris L.) consumed in Swaziland is mostly imported. Small-
scale farmers can grow this crop in the country and obtain good yields if the correct
planting density is identified. A field study ...
Decomposition dynamics of leaves of six indigenous fruit trees commonly found on croplands of southern Africa
(Botswana University of Agriculture & Natural Resources, 2005)
Leaf litter decomposition plays a crucial role in the cycling of both nutrients and energy
in the tropical croplands. A field experiment was conducted at Botswana College of
Agriculture’s Research Farm in 2003 to compare ...
Third stage lanae of Contracaccuin species in catfish (Clariasgariepinus) from Gaborone dam, Botswana
(Botswana University of Agriculture & Natural Resources, 2008)
A study was conducted with the aim of establishing the type of internal parasites in catfish (Claris gariepinus) as well as the infection intensity. Ten catfish {Clarius gariepinus) specimens collected from the Gaborone ...
A survey of ethno-veterinary practices adopted in the treatment of diseases or indigenous chickens in Kgatieng district, Botswana
(Botswana University of Agriculture & Natural Resources, 2008)
A survey questionnaire aimed at collecting knowledge on ethno-veterinary practices used in the
treatment of diseases of indigenous chickens in order to lay a foundation for further scientific
study and validation was ...
Effects of soil type on the emergence, flowering, nutrient uptake and yield components of bambara groundnut (Vigna subterranea (L.) Verde) landraces in Botswana
(Botswana University of Agriculture & Natural Resources, 2008)
On-station experiments were conducted at the Regional Agricultural Research Station-Impala in Francistown. Botswana, during 2003/04, 2004/05 and 2005/06 seasons to determine the effects of sandy loam and sandy clay ...
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 ...