Cropping systems for rolling areas of Magalang and Arayat, Pampanga [Philippines]
1987
Valdez, J.G. Jr. (Pampanga Agricultural Coll., Magalang, Pampanga (Philippines). Dept. of Agricultural Engineering)
Findings of the study showed that among the cash crops (corn, squash, mungo, and cassava) evaluated based on their performance to control erosion in sloping areas, cassava was found to be the best, more so when planted with mungo. This crop planted alone permitted a total soil loss of 0.07147 tons/ha per year but when planted with mungo it permitted only 0.0132 tons/ha of soil loss per year. Squash was another cash crop that was found comparable to cassava in controlling erosion. Among these cash crops, corn permitted the largest amount of erosion which is believed to be the result of intensive cultivation on the crop area as required by its growth. Between ipil-ipil and mungo, ipil-ipil proved to be better than mungo in controlling the loss of soil thru erosion. Ipil-ipil also gave an estimated income of P38,640.45 per hectare after four years.
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