Browsing by Author "Mbuvi, J. P."
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Item The Influence of Parent Materials on Some Characteristics of the Soils of a Semi-Arid Catchment(1993) Wanjogu, S. N.; Mbuvi, J. P.; Kenya Agricultural Research InstituteThis study was conducted to examine the influence of parent materials on some characters of Mukokodo catchment in Laikipia District, Kenya. The study area is in a semi-arid region (agro climatic zone-V) and occupies 252 hectares. Average annual rainfall and temperature are 563 mm and 18-20°C respectively (Sombroek et al., 1982). The catchment is covered by metamorphic rocks of pre-cambrian age. The main rocks are the granitic gneisses which were formed as a result of metamorphism.Item The Influence of Parent Materials on Some Characteristics of the Soils of a Semi-Arid Catchment(1993) Mbuvi, J. P.; Wanjogu, S. N.This study was conducted to examine the influence of parent materials on some characters of Mukokodo catchment in Laikipia District, Kenya. The study area is in a semi-arid region (agro climatic zone-V) and occupies 252 hectares. Average annual rainfall and temperature are 563 mm and 18-20°C respectively (Sombroek et al., 1982). The catchment is covered by metamorphic rocks of pre-cambrian age. The main rocks are the granitic gneisses which were formed as a result of metamorphism.Item Kenya Agricultural Research Institute- National Agricultural Research Laboratory. Kenya Soil Surveys No R1 1975 HM(Kenya Agriculture Research Institute, 1975) Van de Weg, R. F.; Mbuvi, J. P.; ; ;The present soil 'Survey is the first in a series of "reconnaissance soil surveys", with a multi-purpose land evaluation. A programme of systematic inventory of the soil and land resources of the country was initiated by the Kenya Soil Survey in 1972, after strengthening with manpower and funds from the Netherlands Directorate for Development Co-operation through the "Kenya Soil Survey Project", of the then Soil Survey Unit of the National Agricultural Laboratories in Nairobi. This long-term programme envisages the mapping of the so-called "high potential" areas and most of the "medium potential" areas of the country at scale 1: 100,000, and of the "low potential" areas at scale 1: 250,000 (see Fig. 1).Item MOA-NAL-KSS NO.P25 1975 – Some Preliminary Notes on the Soils of Katumani, Kampi ya Mawe, Embu and Murinduko Agricultural Research Stations(Ministry of Agriculture, 1975) Ministry of Agriculture; Mbuvi, J. P.; Weg, R. F.; Ministry of AgricultureVisits were paid to Katumani, Embu and Murinduko 3tations with the aim of comparing the soils of these research stations in the Eastern Province with those of Kindaruma area (sheet 136+) and to assess how far the trial results from the stations are applicable to aforementioned surveyed area. During the visits several pits and augerholes were described and sampled for analysisItem A Preliminary Evaluation of the Irrigation Suitability of the Lands in the Middle-Lower Tana Valley - MOA-NAL-KSS REPORT NO.14 1974(Ministry of Agriculture, 1974) Sombroek, W. G.; Mbuvi, J. P.; Kibe, J. M.; Okwaro, J. W.; Ministry of Agriculture; Kenya Soil SurveyAt the request of the Land and Farm Management Division of the Ministry of Agriculture and the North-Eastem Provincial Crops Officer, site evaluations were carried out on the soil conditions in the Tans. valley in the stretch Mbalamba.J.a,.;.Garisaa.-Bura. The field studies were carried out in two legs, 5 and 6 July 1973 (Messrs Sambroek and Kibe), and 15 and 16 August 1973 (Messrs Sambroek, Mbuvi and Okwaro). The official reporting was delayed because of pressure of other works and the late availability of the laboratory data, and the long time required for the preparation of the map (two sheets; see appendix ).Item Preliminary Evaluation of the Soil Conditions of the East Bank of Lower Tana (Bura-East Area) for Large Scale Irrigation Development. MOA - Kenya Soil Survey Project.(Ministry of Agriculture, 1975) Ministry of Agriculture; Leyder, R. A.; Mbuvi, J. P.; Sombroek, W. G.At the request to the Tana River Development Authority (TRDA), a site evaluation was carried out to determine the irrigation potential of the East bank of the Lower Tana river ("Bura.-east area").' The request was• made in View of the proposal to start a major irrigation scheme in the area, as a complementary to the Dura (-west) scheme of 14.000 hat which is already in an advanced stage of planning.Item Validity of the Philip Equation for Infiltration Into Soils of Sirima and Mukogodo Catchments In Laikipja District(1993) Kironchi, G.; Kinyali, S. M.; Mbuvi, J. P.Infiltration is the process by which water enters into a soil through the soil surface. This process has been studied intensively and the basic principles of soil-water flow are well understood. However, several problems arise when the theory of infiltration is applied to field conditions. Infiltration is greatly affected by conditions at the soil surface, which are influenced by several factors including cultural practices, plant cover and water content.
