Use of hydrophylic materials (CRH) to improve the productivity of sandy soils
2005
Ganotisi, N. D. | Cabalar, L . M. | Castro, R. C.
Sandy soils cover a wide area in the Ilocos Region [Philippines]. These are unproductive due to their inability to hold water and nutrients and usually remain uncultivated. Improving these kind of soils would increase crop productivity in the Ilocos. Studies to improve the characteristics of sandy soils using CRH [carbonized rice hull] were conducted in Currimao, Ilocos Norte. The different rates of CRH (5t/ha, 10t/ha, 15t/ha) were evaluated during the DS 2004. In another trial, a study on CRH rates (0, 10t/ha, 20t/ha) and irrigation interval was also conducted. For corn, application of 15t/ha of CRH in sandy soils produced the tallest corn plants with highest yield (3,160 kg/ha). Application of 15t/ha of CRH also increased the water use effeciency (1.48 kg/cum).
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