The effect of various types of mulches on soil moisture in a coffee field at Kabete, Kenya.

Abstract

Studies conducted during a one year period with coffee showed that vegetative grass mulch is superior to artificial polyethylene mulches with respect to soil moisture conservation. In addition, grass mulch increased soil organic matter, CEC, magnesium and potassium. However, increased potassium might result in induced magnesium deficiency. Regulation of soil moisture is considered desirable not only for the attainment of high yields but also for the conservation of soil organic matter. In areas with wet and dry seasons, mulches might help in the slow release of mineral soil nitrogen consequently minimizing the nitrogen flush