April 2008
Nguni cattle marketing constraints and opportunities in the communal areas of South Africa: Review
Cattle production is the most important livestock sub-sector in South Africa. It contributes about 25 - 30% to the total agricultural output per annum. However,cattle productivity is declining due to diseases and parasites prevalence, lack of feed resources, and poor breeding and marketing management. To increase sustainability and contribution of cattle in eradicating hunger and poverty in communal areas,...
April 2008
Analysis of technical, allocative and economic efficiency of different pond systems in Ogun state, Nigeria
The study was carried out in Ogun State. The study investigated the costs and returns analysis of the respondents and the stochastic frontiers production analysis was applied to estimate the technical, allocative efficiency and economic efficiency among the fish farmers using concrete and earthen pond systems in the State. The results of the returns to Naira invested shows that earthen pond system yielded N8.0 while...
April 2008
Effect of sorghum cultivars on population growth and grain damages by the rice weevil, Sitophilus oryzae L. (Coleoptera: Curculionidae)
In northern Cameroon, the rice weevil, Sitophilus oryzae L. (Coleptera: Curculionidae) is a major pest of Sorghum bicolor (Poaceae) during storage. This staple crop is currently damaged by many insects and others pests during storage. To reduce the post-harvest losses due to S. oryzae, many control strategies are performed. An important step to achieve successful control is to isolate...
April 2008
The efficacy of two isolates of Metarhizium anisopliae (Metschin) Sorokin (Deuteromyco- tina: Hyphomycetes) against the adults of the black maize beetle Heteronychus licas Klug (Coleoptera: Scarabidae) under laboratory conditions
The efficacies of two isolates of M. anisopliae were evaluated against black maize beetle Heteronychus licas in the laboratory at 15 and 28oC and relative humidity of 55 - 70% at the University of Zimbabwe in 2000. The beetles were exposed to the fungus that was suspended either in oil and in water at concentrations ranging from 1.4x104 - 1.4x108 conidia/ml. Mortality was observed in all...
April 2008
Pollination of the broad bean (Vicia faba L.var. major) (Fabaceae) by wild bees and honey bees (Hymenoptera: Apoidea) and its impact on the seed production in the Tizi-Ouzou area (Algeria)
An experiment conducted with caged plots confirmed the large seed yield of Vicia faba L. in the presence of pollinating insects during the flowering season of the year 2003. The plants that were accessible to pollinators provided more pods per plant, more seeds per pods; the pods were longer and the seeds were heavier than the encaged plants. Among the pollinating insects of Vicia faba, in the Tizi Ouzou...
April 2008
Participatory variety selection and characterization of Sorghum (Sorghum bicolor (L.) Moench) elite accessions from Malawian gene pool using farmer and breeder knowledge
Participatory approaches for variety selection, breeding, ex-situ and in-situconservation of neglected crops in Malawi was initiated in 1998. The specific objective of the present study was to select diverse and productive sorghum lines adapted to local conditions and accepted by farmers and consumers at large using farmers’ knowledge and breeders’ scientific approach. Participatory rural...
April 2008
Application and evaluation of the DSSAT-wheat in the Tiaret region of Algeria
Crop simulation models are essential tools to design management practices to mitigate such adverse conditions. They can be used to predict crop yield expectancies under limited environmental resources and various management scenarios. However, the application of crop models requires an accurate knowledge of the genotype-related coefficients, which are commonly not available. This paper aimed to evaluate the DSSAT crop...
April 2008
Prevalence and severity of bacterial blight and anthracnose diseases of cassava in different agro-ecological zones of Nigeria
Geo-referenced surveys were conducted in 2001 and 2003 to assess the prevalence and severity of cassava bacterial blight (CBB) and cassava anthracnose disease (CAD) in different agro-ecological zones of Nigeria. A total of 132 fields were visited in 2001 as follow: humid forest (HF) 42, derived savannah (DS) 38, southern guinea savannah (SGS) 16, northern guinea savannah (NGS) 16 and Sudan savannah (SS) 20. In 2003, 277...
April 2008
The maize seed system in Ethiopia: Challenges and opportunities in drought prone areas
This study examines how the performance of the maize seed system in Ethiopia affects small-scale farmers’ access to and use of improved maize varieties. Particular emphasis is given to the drought-prone agro-ecologies of the Rift Valley region and the specific maize varieties developed for and disseminated in this area. Data for this study were gathered in 2005 from focus group discussions with maize farmers...
April 2008
Haematological and biochemical profile of weaner rabbits fed raw or processed pigeon pea seed meal based diets
Twenty four weaner rabbits of 6 - 8 weeks of age and averaging 550 g in weight were divided into four groups of six (6) rabbits per group and used in a 60 - day feeding trial for blood chemistry and haematological studies. The rabbits were fed raw or processed pigeon pea seed based diets in a Completely Randomized Design. Diet A contained raw (control), Diet B boiled, Diet C toasted and Diet D soaked pigeon pea seed...
April 2008
Production and transfer of embryos in Algerian “Cheurfa†bovine breed
This work has permitted to test the response of the local cattle Cheurfa for a pFSH superovulation treatment based on administration of 40 mg pFSH (LH/FSH 40%), at a rhythm of 2 injections every 12 h between J10 and J13 of the oestrus cycle associated to injection of prostaglandin synthesis "Prosolvin®" at the 3rd day of the treatment. Two inseminations were carried out at 12 h interval...
April 2008
Histochemical studies of some Nigerian species of Aneilema R. BR. (Commelinaceae): An under growth of rubber plantation
Four Nigerian spp of Aneilema (A. aequinoctiale, A. beniniense, A. paludosum andA. unbrosum) common as under growth of rubber plantations were screened for their condensed tannins and saponins. This is because of the importance of tannins and saponins in industries, such as the leather industry. Both chromatographic and spectrophotometric analyses were employed in this study. Procyanidin and saponins...
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