Abstract: Many species of thrips (Thysanoptera) in the family Thripidae form mating aggregations, but the adaptive significance of these aggregations and the extent of male and female mate choice is poorly understood. We studied the mating behaviour of the bean flower thrips Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), which forms male aggregations and occurs across sub-Saharan Africa. We tested whether males choose mates by female age or mating status. No-choice mating bioas...
Abstract: Field trials were conducted in Kilifi District, Kenya on the activity of Piper guineense and Spilantus mauritiana...(continue from the attached pdf)
Abstract: Powders of Piper guineense and Spilanthes mauritiana, potential mosquito larvicides, (continue from the attached pdf)
Abstract: The livestock tropical bont tick, Amblyomma variegatum Fabricius, is a pest of major economic importance in Africa where it is the vector of Cowdria ruminantium that causes Heartwater, disease in cattle. Its control has relied mainly on commercial acaricides, which have many problems associated with, environmental pollution, development of resistant strains of ticks against acaricides and escalating costs. It has, therefore, become necessary to look for alternative methods of tick ...
Abstract: The overall goal was to contribute to crop-productivity by developing sustainable pest management and the objective was to select and identify an efficacious local B. thuringiensis isolate active against the selected stem borers, C. partellus, E.saccharina, B. fusca and S. calamistis.Various isolates of B. thuringiensis were isolated from soils and dead insects collected from different places in Kenya. They were screened against various stem borers including C. partellus, E. saccha...
Abstract: Eleven species/subspecies belonging to the genus Trypanosoma, cause African Animal Trypanosomiasis (AAT) with Trypanosoma vivax and Trypanosoma congolense being the predominant pathogens. Annually, AAT leads to losses worth 4.5 billion dollars to livestock dependent economies in Sub-Saharan Africa. In order to manage the disease, trypanocidal drugs have been in use. However, parasites resistant to these trypanocides have emerged making the treatment of AAT difficult. Parasite resis...
Abstract: In this study, carried out in Nguruman, southwestern Kenya, 10 bee species were identified as eggplant pollinators. Their foraging behaviour was shown to be affected by the prevailing ambient temperature and not time of the day or the number of flowers per square meter in the eggplant fields. Only 2 bee species, Xylocopa caffra and Narnia sp., visited the eggplant blossoms at a great frequency. Their pollinator effectiveness was determined in two eggplant cultivars (the Black Beaut...
ABSTRACT A study was carried out to investigate the effects of sulphuric acid, hot water and soaking of seed in water treatments on the germination of Bambara nut (V. subterranea) seeds were planted in poly pots for germination. 40 seeds of Vigna subterranea (one per poly pot) with ten replicates each were used. The highest germination was recorded in seeds soaked in water for 24 hours. Germination was observed to be low or slow in untreated (control) seeds. While there was poor or no resp...
ABSTRACT Experimental research on soil amendment using poultry manure on the growth of improved maize seeds (SUWAN-1-SR) in diesel oil-contaminated soil was carried out at the Research farm behind the Department of Botany, site II, Delta State University, Abraka. The experiment was laid out in Randomized Complete Block Design with four replicates. Rates of poultry manure applied were Og, 2g, 4g, 6g, 8g, and 10g. Data collected were plant height, stem girth, number of leaves, and leaf area.
ABSTRACT The general distribution, growth form and economic importance of Kha%a senega!sir (Bear) A. Juss. and Khaya ivorensis A. Chev. are described. Some aspects of the water relations of seedlings of these two species, the former a savanna species and the latter a forest species were studied with the view of ascertaining whether moisture plays an important role in determining the pattern of their distribution. &rowth of seedlings under four soil watering regimes namely - -0.3 (A), -0,4 (B...
ABSTRACT Oyster mushrooms (Pleurotus species) have been an important food item in both developed and developing countries serving an invaluable resource for nutrition, health and disease prevention. Although several agricultural wastes lignocellulose have been used for cultivation of oyster mushrooms worldwide and in Ghana, the most utilized is the wawa (Triplochiton scleroxylon) sawdust and its amendments for the cultivation of Pleurotus ostreatus in Ghana. However, a longer period of 28 da...
Aim: To document the medicinal uses of homegarden plants by local healers. Study Design: Semi-structured interview was conducted with the prior approval from the gewog official. Five local healers were contacted for interview before field visits based on their popularity and experience of using medicinal plants in their locality. Place and Duration of Study: The study was conducted at Gosiling gewog, Tsirang District, Bhutan between May and June 2016. The homegarden and agricultural pract...
ABSTRACT Macrophytes such as Eichhornia crassipes and Pistia stratiotes are known bioaccumulators found in the Ologe Lagoon which receives effluents mainly from Agbara Industrial Estate. However, the mechanism of heavy metal bioaccumulation by these macrophytes has not been fully understood. This study was designed to determine the mechanism of heavy metal bioaccumulation and model the phytoremediation capabilities of the macrophytes. Five sampling stations: Owo (before the point of dis...
Abstract Tithonia diversifolia is found growing abundantly within the forest zone of Nigeria. The evaluation of the pulp and paper making properties of T. diverisifolia showed average fibre length, width, wall thickness and lumen of 827.66 186.40m, 20.29 3.92 m, 3.96 0.28 m and 12.16 3.96 m respectively. This short fibre length and small wall thickness of T. diversifolia made it unsuitable for making strong papers. However, it is good material for mak...
ABSTRACT Maize and soyabean are among the staples in the world. Their sustainable production through the use of synthetic fertilizer causes soil degradation and ground water contamination. An alternative means of boosting and sustaining the production of these staples through the use of rhizobium and mycorrhiza have been reported but there are contradictory reports on interactions between the two organisms. Therefore, the objective of this study was to assess the influence ofRhizobium japoni...