ABSTRACT Climate and land use are the two most significant factors that influence watershed hydrology globally. The impact of climate variability on streamflow arises from changes in precipitation and temperature, leading to the adjustment of the physical and biological processes of ecosystems. Land use change impact on streamflow however varies across different regions and environments to warrant a universal theory, making it subject of scientific interest to hydrologists. The aim of this st...
ABSTRACT The main Karoo Basin of South Africa contains a relatively continuous sequence of continental deposits that accumulated over a 100 million year period from Permo-Carboniferous (280 Ma) to early Jurassic (180 Ma). In the southwestern region of the basin the Karoo succession is approximately 4 000 m thick, the upper half of which consists of vertebrate fossil-bearing fluvial rocks of the Beaufort Group. This study deals with Lower Beaufort (Adelaide Subgroup) strata belonging to the Te...
ABSTRACT Vegetable production is of great importance in terms of nutrition improvement, income generation and food security. Africa Research in Sustainable Intensification for the Next Generation (Africa RISNG) action research project actively integrates vegetable farming and marketing practices in order to reduce the vulnerability of indigenous populations of Babati district located in the Manyara region of Tanzania. In Tanzania smallholder vegetable famers receive asymmetrical and inc...
ABSTRACT Over the years, Njoro Sub-County in Kenya has become increasingly urbanized, transforming from a transcendently rustic, horticultural territory, to dominatingly urban non-agrarian locale; driven mainly by growth of population. Agriculture being the main source of livelihood for the rural and semi-urban residents is being acutely jeopardized by rapid urbanization. Despite extensive studies on agricultural land conversion, there exists a knowledge gap on the extent of agricultural land...
ABSTRACT The role of agricultural extension is vital to the diffusion of new technologies, but extension is currently not very effective in many African nations, with conventional extension approaches having minimal impact. In Kenya, there have been gaps on the availability of studies and documentation of the specific extension approaches and their influence on the acquisition of knowledge and skills for improved farm productivity despite the various extension efforts and resources put in pla...
ABSTRACT Spider plant (Cleome gynandra) is among traditional leafy vegetables whose consumption is increasing in Kenya. Characterization of spider plant ecotypes has not been exclusively done even though a collection exists at the national museums of Kenya. Production of spider plant as a vegetable is constrained by low leaf yields resulting from lack of improved planting materials and a short vegetative phase of the plant. The objective of this study was to morphologically characterize 36 sp...
ABSTRACT Leaf rust (Puccinia triticina) of wheat (Triticum aestivum L.) is one of the major foliar diseases contributing to yield losses in wheat worldwide. Objectives of this study were: (i) to determine genotypic variation among Kenyan wheat genotypes against leaf rust at adult plant stage (ii) to determine genotypic variation among Kenyan wheat genotypes against leaf rust at seedling stage (iii) to determine leaf rust virulence in Kenya using leaf rust differential sets. Three experiments...
ABSTRACT Lameness is a cause of worry to dairy producers for being indicative of welfare problem with resultant economic losses from reduced milk yield, veterinary cost or premature culling. Risks for lameness are both animal and herd level factors, but the magnitude varies with housing conditions of the cows. This study compared farmer estimated and observed prevalence, types of lameness, risk factors and economic losses from lameness of cows in farms practicing zero- and pasture grazing. T...
ABSTRACT This study examined the percentage distribution of benefits obtained from Ibadan urban forest reserves across policy relevant socio-economic classes of the populace in order to draw research and policy implications. Descriptive and inferential statistics were employed to analyse data obtained from a multi-stage random survey of 397 residents of Ibadan metropolis. The results show that benefits obtained from the urban forest reserves do not depend significantly on gender (x2=2.57; p>...
ABSTRACT Rice productivity is low in Nigeria, and NERICA was introduced by West Africa Rice Development Agency (WARDA) to solve this problem. This study focused on NERICA productivity and efficiency in Kaduna State. A three-stage sampling technique was used with Kaduna State being purposively selected. Igabi and Soba Local Government Areas (LGAs) were randomly selected. Five villages were randomly selected from each LGA, with a total of 129 NERICA farmers selected and used for the analysis. ...
ABSTRACT The importance of forests, forest management and related information to human sustainable development cannot be overemphasized. This paper reports the analyses of forestry-related news source and their geographical focus in Guardian and Tribune Newspapers in Nigeria between June, 2009 and May, 2014. Purposive sampling technique was used to select the two National dailies because both have column for environment issues, they are available and their continuous existence for the period...
ABSTRACT This study presents the empirical analysis of the effects of oil exploitation on the efficiency of artisanal fishing households in the Niger Delta region, Nigeria. The selection of respondents was multi-staged and involved purposive sampling as well as random sampling methods. A structured questionnaire and interview schedule were used to elicit information from a randomly selected sample of 160 artisanal households from Delta and Bayelsa States, Nigeria. Descriptive statistics, sto...
ABSTRACT Rice has become a staple food, just like yam, garri and beans. As a result, the marketing of rice has become very important due to increasing demand of the product. The study examined the economics of farm-gate rice marketing in Enugu State, Nigeria. Five objectives and one hypothesis guided the study. The study covered all the communities in the local government areas in the three Agricultural Zones that produce rice in the study area. The population of the study consisted of rice ...
ABSTRACT This study which lasted for 12 weeks investigated the effects of garlic and probiotics additives in the diets of grower pigs. A total of sixteen 16 weeks old grower pigs were randomly assigned to four treatments. Each treatment had 2 replicates of 2 pigs per replicate that were housed in a previously cleaned and disinfected pen measuring 3.2m x2.7m with concrete floor, feeding trough and water drinker. Four treatment diets (T1, T2, T3, and T4) were used in a 2x2 factorial arran...
More than 78% of the households own livestock in South Sudan. Livestock, particularly cattle, goats and sheep, are an important social and economic asset in South Sudan. Goats are important and are predominant in most rural households with estimated population of 12.5 million heads. Despite the vast potential livestock contribution to the rural household development, livestock products (milk and meat) do not meet the local demands due to low productivity. The available seasonal feed reso...