A PROPOSAL TO STUDY DIFFERENT SOIL ORGANIC AND INORGANIC AMENDMENT OPTIONS FOR THE MANAGEMENT OF SALINE/SODIC SOILS AND TEST HIGH VALUE CROP SUITABILITY FOR KALACHA IRRIGATION SCHEME Obanyi S.N., Muya E. Dub G. and Radiro M. INTRODUCTION.
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A PROPOSAL TO STUDY DIFFERENT SOIL ORGANIC AND INORGANIC AMENDMENT OPTIONS FOR THE MANAGEMENT OF SALINE/SODIC SOILS AND TEST HIGH VALUE CROP SUITABILITY FOR KALACHA IRRIGATION SCHEME
Obanyi S.N., Muya E. Dub G. and Radiro M.
Crop production decline and this can be reversed if the soil problems are addressed
There is imbalance of cations such as Ca, Mg and K leading to artificial deficiency
Low organic matter as farmers do not apply any manure and the stover is fed to livestock
About 40% or about 25 million ha of the land of Kenya is covered by soils that have salinity and/or sodicity problem(s) with saline, saline-sodic and sodic soils, covering 2.9, 14.0 and 8.2 million ha respectively (Wamicha et al., 1986; Muchangi, 2005; Ngigi, 2002; Muchena, 1987)
Of the area under irrigation, more than 50% is undergoing severe land degradation through secondary salinisation and sodification mainly due to improper irrigation and soil fertility management practices (Muchangi, 2005; Ngigi, 2002)
Degraded systems: A case for Hareri scheme, Mandera
The study will have three main objectives:
Kalacha irrigation scheme in Marsabit District
lies between Longitude 2° 30’ N and Latitude 37° 30’ E.
300 meters above sea level,
temperatures of approximately 300C
Bi-modal rainfall averaging 225mm per year
Wind speed is over 4m/s
Evaporation is about 2280mm/year
surrounded by Maikona, Asie and Kargi hills and drains to Chalbi desert
Kalacha Irrigation Scheme
Table 1. Soil physical properties
Soil chemical properties
Parameters to be measured
Soil moisture measurement
manure and compost making
Experimental Design and Treatments
The performance of 4 levels of vermin-compost
Statistical Data Analysis
Estimated budget: 1.418m