December 2010
Effects of crop rotation on soil macronutrient content and pH in potato producing areas in Kenya: Case study of KARI Tigoni station
Proper crop rotation might help to conserve soil fertility among small scale potato farmers in Kenya. A study was carried out at KARI Tigoni station between April 2007 and May 2010 to evaluate the effect of crop rotation on soil pH and macro nutrient levels. Rotations involved maize, potatoes and cabbages. Results showed that, soils at KARI Tigoni station are generally acidic with pH ranging from 4.3 (extreme acidity)...
December 2010
Comparative influence of benomyl on rhizosphere and non-rhizosphere bacteria of cowpea and their ability to solubilise phosphate
Six concentrations of benomyl (g/ml): 0.00 (control), 0.05, 0.10, 0.20, 0.40 and 0.80 were assayed by using 1.5 kg of top soil collected from nursery of Federal University of Technology, Akure, Ondo State, Nigeria. Cowpea (IT - 93K - 452 - 1) seeds were planted in the soil sample in different polyethylene bags. Harvesting of cowpea seedlings was done on 5, 10, 15, 20, 25 and 30 days of germination. Nodule and soil...
December 2010
Changing weather and introduction of pigeon pea intercrop in formerly cold pyrethrum zone
Pyrethrum is a, herbaceous perennial crop grown commercially for extraction of pyrethrins, which is used in pesticides formulation. Through out the years, it has been grown in a pure stand due to its poor performance as intercrop with other crops that do well in pyrethrum growing areas. A trial was carried out on introduction of a short pigeon pea variety at different line spacing within the pyrethrum crop in randomized...
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