The effect of inter-row spacing, plant population and planting date on the seed yield, yield components and oil content of sunflower (he1ianthus annuus)

This thesis reports on experimental work carried out on sunflower (Helianthus annuus) over two seasons; short rains of 1984 and long rains of 1985 at the Faculty of Agriculture Field Station of the University of Nairobi, Kenya. The Field Station is located at an altitude of 1850 metres above sea level and has an average rainfall of 925 millimetres. The rainfall recorded in the two seasons was 489.7 mm for the short ralns and 631.4 millimetres for the long rains.

Human-wildlife conflicts and rural livelihoods in Laikipia district

There are increasing cases of conflicts between human beings and wildlife over the use of natural resources manifested through such incidents as people being killed or injured by wild animals; loss of livestock through predation; competition for pasture and water; invasion of crop farms and food stores by wildlife; inadequate or lack of compensation for losses or injuries; encroachment on wildlife areas such as forests and protected areas, blocking of wildlife migration routes; and poaching of wildlife for food, ivory, horns, skins and other valuable products.

Studies on Integrating weed management strategies in Carrot (daucus Carota L.) production

Weed control constitutes one of the mam cost items and a constraint to carrot production. The current study was conducted with the aim of developing an integrated cost-effective strategy of managing weeds and increasing the competitive ability of the crop against weeds. The weed control strategies tested in RCBD and replicated three times; were black plastic mulch, grass mulch, herbicides (Linuron and Oxyfluorfen), and grass mulch with herbicide combinations.

Adapting Nyando Smallholder Farming Systems To Climate Change And Variability Through Modelling

This study was carried out in Nyando, Kisumu County to model maize production under different climate scenarios and project the yields for the years 2030 and 2050. A crop model, Decision Support System for Agrotechnology Transfer (DSSAT) was used under rain fed conditions to simulate the effects of climate change on maize production and project the future yields. Three maize varieties were used; Katumani Comp B as early maturing variety, Hybrid 511 as a medium maturing variety and Hybrid 614 as a late maturing variety.

Line by Tester Analysis of Elite Tropical-temperate Maize Lines Under Water-stress and Non-stress Environments

Maize is the second most cultivated cereal crop in the world after wheat. In spite of its importance, the production challenges have continuously led to poor yields in sub-Saharan Africa. This has called for need to improve varieties that are adapted to the tropical ecosystem.

Ch a r a c terization of SnxSeylSn02:Co P-N Junction Deposited by Spray Pyrolysis for Photovoltaic Application

SC-,1ICil f('r semiconducting materials for photovoltaic application has attracted a lot of attention rccern l, This research will involve characterization of Sn.Se.: S1102-Co P-N as a solar cell material. SnSe is Ci I' type semiconductor with a direct band gap and high absorption in the visible region spectrum Cobah doped rin oxide is not only a direct band gap semiconductor but also has a wide band gap and high uansrmnanc e. Solar cells making use either of the two materials have been fabricated and have aclne , ed good efficiencies.

The Impact of Farmer Training on Farm Output In Homa Bay, South Nyanza, Kenya

Tie study concerns itself with the role of extension education to the small holder farmer. The study is based on Han a — Bay Fanner Training Centre, South Nyanza District, Kenya. It was postulated as a basis for research that a number of factors influence ar.all holder production, among which extension education wa3 singled out for a detailed Btudy.

Combining ability of grain yield and agronomic traits in diverse maize lines with maize streak virus resistance for Eastern Africa region

Combining ability of inbred lines is important information in maize hybrid breeding programs incorporating materials from various germplasm sources. This study was conducted with germplasm varying in their maize streak virus (MSV) reaction, genetic, and geographic origin. In a half diallel cross of six parents, general and specific combining abilities were determined for grain yield, days to silking, ear height and MSV disease resistance. The grain yields of the single crosses were significantly higher from those of the hybrid checks, H614 and H513, which are popular varieties.

Participatory methodologies for rural development: The case of agricultural extension and food production in nyamira district.

This study inquires into the role of farmers' participation in agricultural extension and of extension methodology in their adoption of improved farm practices. The study further looks into the function of farmers' adoption of improved farm practices in their relative self-sufficiency in food production and levels of living of farm families.

Essential oils of some plants of the family capparidaceae. as repellents for the brown ear tick, rhipicephalus appendiculatus and the maize weevil, sitophilus zeamais.

This thesis describes a chemical and bioactivity study of the essential oils of five tropical plant species of the family capparidaceae, namely Boscia angustifolia A. Rich var. angustifolia, Boscia mossambicensis Klotzsch, Cadaba farinosa Forsk, Gynandropsis gynandra(L.) Brig., and Thylachium africanum Lour. The essential oils were isolated by hydrodistillation of the aerial parts using amodified clavenger apparatus. Oils of various colours and essences were obtained..................

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