Browsing by Author "Gachene, C.K.K."
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Item The Characteristics, Classification and Land Use Significance of Swell-Shrink Soils East of Lake Victoria, Kenya(Kenya Soil Survey, 1988) Gatahi, M.M.; Gachene, C.K.K.; Kenya Soil SurveyThe eastern gulf shores of Lake Victoria is an old lacustrine valley of Pleistocene period which has since been filled with alluvial and colluvial sediments derived from the surrounding volcanic hills and scaps to form a major plain. This plain slopes very gently into the lake. It is surrounded by Nandi Escarpment to the north Nyabando Escarpment to the south and volcanic hills to the east and North West.Item A Detailed Soil Survey of the Proposed Voo Research Substation, Report No. D 39, 1986(Kenya Agricultural Research Institute, 1986) Waruru, B.K.; Gachene, C.K.K.; Wachira, T.; Kenya Agricultural Research InstituteAt the request of the Director of the Katumani National Dry-land Farming Research Station, a detailed soil survey of the proposed Voo Research Substation was carried out in order to assess the suitability of the soils for cereals, pulses and root crops using dry-land farming methods. Fieldwork was carried out in August and September 1984 by the authors and Mr. S. Mwangi of Kenya Soil Survey.Item Effect of Introduced Forage Legumes on Productivity of Traditional Pasture Enclosures in Semi-Arid Rangelands of Kenya(2013) Macharia, P.N.; Mureithi, J.G.; Kinyamario, J.I.; Ekaya, W.N.; Gachene, C.K.K.; Thuranira, E.G.This study was carried out to investigate the effect of introduced forage legumes on improvement of the quality and quantity of fodder in traditional pasture enclosures of Maasai livestock keepers in semi-arid rangelands of Kajiado District, Kenya. The forage legumes Glycine, Siratro and Shrubby Stylo were integrated into the natural pastures and their effects on natural pasture productivity studied. Data on dry matter (DM) production was collected at two defoliation heights (15 and 30 cm) and three defoliation intervals (2, 4 and 6 months). The highest DM yield was obtained at the two months defoliation interval at 15 cm height (though there were no significant differences between treatments), and inclusion of Glycine and Siratro into natural pastures resulted in combined DM yield of 3.79 and 3.84 tJha, respectively, which was 40 and 42%, respectively higher than the DM yield of the natural pasture (2.71 tI ha). Due to slow growth of Stylo as an intercrop, the mixed pasture yielded 2.59 tJha. Stylo as an intercrop needed more than four seasons of growth for it to contribute higher DM yield than the natural pasture. Forage quality determinations at vegetative, flowering and senescent stages showed that grasses in mixed pastures contained higher crude protein (CP) content and had higher digestibility and lower fibre content than grasses in natural pasture at all stages of growth.Item Effect of Introduced Forage Legumes on Productivity of Traditional Pasture Enclosures in Semi-Arid Rangelands of Kenya(2013) Macharia, P.N.; Mureithi, J.G.; Kinyamario, J.I.; Ekaya, W.N.; Gachene, C.K.K.; Thuranira, E.G.; Kenya Agricultural Research Institute, , P.O. Box 14733-00800, Nairobi, KenyaThis study was carried out to investigate the effect of introduced forage legumes on improvement of the quality and quantity of fodder in traditional pasture enclosures of Maasai livestock keepers in semi-arid rangelands of Kajiado District, Kenya. The forage legumes Glycine, Siratro and Shrubby Stylo were integrated into the natural pastures and their effects on natural pasture productivity studied. Data on dry matter (DM) production was collected at two defoliations Heights (15 and 30 cm) and three defoliation intervals (2,4 and 6 months). The highest DM yield was obtained at the two months defoliation interval at 15 cm height (though there were no significant differences between treatments), and inclusion of Glycine and Siratro into natural pastures resulted in combined DM yield of3.79 and 3.84 tlha, respectively, which was 40 and 42%, respectively higher than the DM yield of the natural pasture (2.71 tJ ha). Due to slow growth of Stylo as an intercrop, the mixed pasture yielded 2.59 tlha. Stylo asan intercrop needed more than four seasons of growth for it to contribute higher DM yield than the natural pasture. Forage quality determinations at vegetative, flowering and senescent stages showed that grasses in mixed pastures contained higher crude protein (CP) content and had higher digestibility and lower fibre content than grasses in natural pasture at all stages of growth.Item Management of Vertisols in Semi Arid areas of Kenya KARI/IBSRAM Collaborative Research Project - Site Characterisation At Mwea-Karaba Kenya. Ministry of Agriculture 1992(Ministry Of Agriculture, 1992) Ministry of Agriculture; Gachene, C.K.K.; Ministry of AgricultureMost of the farm is used for growing subsistence crops such as maize, beans I sweet potatoes, cassava, millet and cowpeas. Cotton, chick peas (popularly known in the area as 'china yellow grams') and sunflower. are used as cash crops. Around the home compound, the area is used for grazing.Item Ministry of Agriculture National Agricultural Fertilizer use Project (Phase 1): Final Report Annex III Description of the first priority sites in the various Districts Vol 4 Siaya(Ministry of Agriculture, 1987) Hinga, G.; Nandwa, S.W.; Onyango, J.W.; Muchena, F.N.; Gachene, C.K.K.; Kibe, J.M.; Qureshi, J.N.; Oduor, P.O.S.; Owuor, J.O.; Milikau, R.L.; Wamae, D.K.; Mwangi, B.; Wataka, S.; Ministry of AgricultureThe annual average rainfall of Siaya District increases from 800 mm at the lake shore to 2000 mm near the border of Kakamega District. The contrasts in 66% rainfall reliability, i.e. amounts surpassed in 20 out of 30 years, are even higher, in the first rains from 350 to 900 mm and in the second rains from 50 to 800 mm (see Maps 4.0.1 and 4.0.2). Near Lake Victoria the average annual temperature is about 22.5°C, in the nor~h-eastern part of the District it is 21°C . Humidity of the air is relatively high. For the entire District evaporation is 1800 - 2000 mm per year.Item Ministry of Agriculture National Agricultural Fertilizer use Report (Phase 1): Final Report Annex III Description of the first priority sites in the various Districts Vol 1 Kakamega(Ministry of Agriculture, 1987) Hinga, G.; Nandwa, S.W.; Onyango, J.W.; Muchena, F.N.; Gachene, C.K.K.; Kibe, J.M.; Qureshi, J. N.; Oduor, P.O.S.; Owuor, J.O.; Milikau, R.L.; Wamae, D.K.; Mwangi, B.,; Wataka, S.; Ministry of AgricultureAnnual rainfall in the District is both high, averaging 1200 to 2100 mm, and, apart from the north-eastern parts, reliable. In 20 out of 30 years 500 to 1100 mm are reached or surpassed in the first rains, 450 to 850 mm during the second rains. In the centre of the District rainy seasons cannot easily be distinguished, since there are normally no real dry seasons separating them (see Figure 7.3.5). First rains start at about the middle of February with a second increase in August followed by a third in October/November.Item Ministry of Agriculture National Agricultural Laboratories use recommendation project (phase I), Annex III: Description of the first priority sites in the various Districts Vol 25 Meru district(Ministry of Agriculture, 1987) Hinga, G.; Nandwa, S.W.; Onyango, J.W.; Muchena, F.N.; Gachene, C.K.K.; Kibe, J.M; Qureshi, J.N.; Oduor, P.O.S.; Owuor, J.O.; Milikau, R.L.; Wamae, D.K.; Mwangi, B.; Wataka, S.; Ministry of AgricultureThe Meru District is situated around the eastern slopes of Mt. Kenya. In the south-eastern region, the main agro-ecological zones follow - according to altitude - a similar pattern as in the bordering Embu District. However, the contrast between wet and dry seasons becomes more accentuated . This is reflected in the sequence of sub-zones (see Map 25.3) and in the rainfall diagrams for the various trial sites in Meru (Figutes 25.1.5 , 25.2.5 and 25.3 . 5) . For this reason, the cultivation of permanent and annual crops, such as coffee, tea, bananas and cotton, requires in most areas careful water and soil conservation to overcome the drought periods between the seasons. Such conservation measures are also beneficial for the seasonal crops , since the rainy seasons bring rainfall, though very high.Item National Agricultural Laboratories fertilizer use Research Project (Phase I): Final Report Annex III: Description of the First Priority Sites in the Various Districts Vol 26 Machakos District No.26(Ministry of Agriculture, 1987) Hinga, G.; Nandwa, S.W.; Onyango, J.W.; Muchena, F.N.; Gachene, C.K.K.; Qureshi, J.N.; Oduor, P.O.S.; Owuor, J.O.; Milikau, R.L.; Wamae, D.K.; Mwangi, B.,; Wataka, S.; Kibe, J.M.; Ministry of Agriculture; Kibe, J.The centre of Machakos District consists mainly of hills and small plateaus, rising to 1800-2100 m, surrounded by a large plateau, elevated to about 1700 m in the west and sloping down to 700 m in the south-east. This undulating peneplain is broken by isolated mountains such as 01 Donyo Sabuk in the north-west, by the volcanic outflow of the Yatta Plateau in the east, and by a range of volcanic ashes, the Chyulu Hills in the south-westItem A Preliminary Investigation of the Soil Conditions of the Ithe Wa Gathoni Farm Langata (Nairobi) 1979(Ministry of Agriculture, 1979) Wamicha, W.N.; Gachene, C.K.K.; Ministry of Agriculture; Ministry of AgricultureThis report describes the soil conditions of the Ithe-w8.-Gathoni Farm. A site Evaluation survey was carried out on 18th April, 1979 at the request of the farm owner. The soil investigation was carried out in relation to the suitability of the area for rainfed horticultural crops. The field investigations were carried out using the farm plan (at scale 1:2,500) as the base map. Thirteen auger hole observations and one profile pit were described. Each horizon in the profile pit was sampled for physical end chemical analysis at the National Agricultural Laboratories, Nairobi. A composite topsoil sample was also collected around the profile pit for fertility analysis.Item Semi-Detailed Soil Survey of the Evurore Catchment Area (Embu District) 1983(Ministry of Agriculture, 1983) Gachene, C.K.K.; Ministry of AgricultureAt the request of the EMI Soil and Water Conservation Project, a semi detailed soil survey of the Evurore Catchment area was carries out. The project is particularly interested in erosion susceptibility/hazard of the soils and soil and water conservation. Fieldwork was carried out in collaboration with Messr. P.K Kimani, P.W. Kimotho, P.M. Mainga, J.R. Rachilo and T.Wachira in February, 1983.Item Soil Conditions of the Broom Hill Farm Timau Laikipia District, 1984(Ministry of Agriculture, 1984) Ministry of Agriculture; Gachene, C.K.K.; Ministry of AgricultureThis work was carried out at the request of Mr. Ng'ang'a, a farmer in Timau location. The purpose of the soil survey was to examine the soil conditions of the farm and determine its suitability for fodder crops. The field work was carried out in March 1984 by the author and Mr. C. Kariuki.
