Browsing by Author "Braun, H.M.H."
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Item An Assessment of the Irrigation Suitability of the Kandis Dam Area Kajiado District, Report No. 57, 1981(Ministry of Agriculture, 1981) Braun, H.M.H.; Ministry of AgricultureItem A Preliminary Evaluation of the Irrigation Suitability of The Soils In Mandera Ramu Area NO. 10 1973(Ministry of Agriculture, 1973) Sombroek, W.G.; Braun, H.M.H.; Kibe, J.M.At the request of the Land and Farm Management Division of the Ministry of Agriculture, a site evaluation of the soil and water conditions of the Daua valley in Mandera District was carried out, from 6th to 13th of April 1973. Special attention was to be given to an area just downstream of Mandera town, an area halfway between Mandera and Ramu (Hareri), and one at Ramu town of beyond (Dimtu). These areas are under consideration for irrigated agriculture under the Ministry’s programme of development of minor irrigation schemes. More specifically, they should serve for the settling of the groups of destitute in the area, now living largely in famine relief camps. The data gathered should help the Ministry of Agriculture to assess preliminarily the feasibility of the proposed schemes.Item A Preliminary Evaluation of the Soils of North Western Machakos District (Parts of Matungulu and Mbiuni Locations), 1974(Ministry of Agriculture, 1974) Mbuvi, J.P.; Braun, H.M.H.; Weg, R.F.; Ministry of AgricultureAt the request of the Medical Research Centre, Nairobi, a site evaluation was carried out in the N. W. part of' Machakos District. . At present the M.R.C. is carrying out a longitudinal study and morbidity and mortality of' a number of' childhood diseases in this area. The study aims at the collection of demographic and medical data among two population groups of' 5,000 each in different ecological settings, (Vogel et 0.1, 1974). There is no proper soil data for this area, though it is covered by the land System Atlas of' Western Kenya", scale 1:1.000.000 which is based on photo interpretation with a minimum of' field observations. The D.O.S. report on the soils of' Nairobi-Thika-Yatta Machakos area (Scott, 1963) also covers this part (scale 1:100.000). This-is also mainly a photo interpretation map wit~ few field observations. These two documents are on a reconnaissance scale, and do not give sufficient data for the urea under consideration.Item A Preliminary Evaluation of the Soils of North-Western Machakos District (Parts of Matungulu and Mbiuni Locations)(Kenya Agriculture Research Institute, 1974) Mbuvi, J.P.; Van de Weg, R. F.; Braun, H.M.H.; Ministry of AgricultureAt the request of the Medical Research Centre, Nairobi, a site evaluation was carried out in the N.W. part of Machakos District. At present the M.R.C. is carrying out a longitudinal study on morbidity and mortality of a number of childhood diseases in this area. The study aims at the collection 01' demographic and medical data among two population groups of 5,000 each in different ecological settings, (Vogel et al, 1974). There is no proper soil data for this area, though it is Covered by the "lend System Atlas of Western Kenya", scale 1:1.000.000 which is based on photo interpretation with a minimum of field observations~ The,D,O.S. report on the soils of Nairobi-Thika-Yatta-Machakos area (Scott, 1963) also covers this part (scale 1:100.000). This -is also mainly a photo interpretation map with few field observations. These two documents are on a reconnaissance scale, and do not give sufficient data for the area under considerationItem Seasonal Distribution of Rainfall in Kenya, 1986(Ministry of Agriculture and Livestock Development, 1986) Ministry of Agriculture and Livestock Development; Braun, H.M.H.Kenya has a wide range of annual rainfall averages, from 180 mm in parts of Turkana to 2400 mm or more on the Nyambeni Hills and the slopes of Mount Kenya. For the identification of the seasonal patterns of rainfall distribution, the large variation in amounts of rainfall is often a hindrance. By using the rainfall per month as a percentage of the annual total instead of monthly amounts of rainfall, this problem can be overcome. Moreover it was found during the preparation of a chapter on climate for the Kindaruma report (Braun, 1975), that for thirteen stations between Meru and Kibwezi, the percentage of the average October-December rainfall which falls in October, is well correlated with the latitude expressed in degrees and minutes south of the North Pole (linear correlation coefficient r = -0.92). Similarly, for the same stations a good correlation was found between the percentage of the average March-May rainfall which falls in March and the station's latitude (r = +0.84). The negative sign of the correlation coefficient for October is in agreement with the southward movement of the Inter-Tropical Convergence Zone (ITCZ) and of the accompanying rain belt in October, while the positive sign of the coefficient for March agrees with the northward movement of ITCZ and rain belt in March. The coefficients for the correlation between the AMOUNT of rainfall in October or March and latitude are -0.92 and -0.41 respectively. The coefficient for March has a low value and it has the wrong sign, i.e. the coefficient would indicate a movement of the rain belt in southern direction. These examples indicate that for some purposes it can be an advantage to express the monthly rainfall as a percentage of the annual or seasonal total. In this report some comparisons based on rainfall percentages will be made for various areas in Kenya (and Tanzania). The use of rainfall percentages is complementary to, and not instead of, the normally used average amounts of rainfall.Item Survey Report on Irrigation Suitability of the Olkaramatian Experimental Area, 1972(Ministry Of Agriculture, 1972) Ministry of Agriculture; Wokabi, S.M.; Braun, H.M.H.; Ministry of AgricultureAt the request of Mr. Slade, Administrative Officer of the Masai Rural Training Center at Sanya, two members of the Kenya Soil Survey Project made a trip to the Olkaramatian Experimental Area. The purpose of the trip was to investigate whether the soils of the Experimental Area and the water of the Ewasongiro are suitable for the irrigation of fodder crops.
