Utilization of sweet potato and taro of residual fertility from soils previously grown with cash crops.
1990
Marquez W.L. | Torres H.B. | Gonzales I.C.
Sweet potato tip cuttings of cv. Kalbo-oy and taro cv. 'Itchina' planted subsequently to white potato, garden pea, carrot, beans, cabbage, and corn under La Trinidad [Philippines] condition. This was done to determine the profitability of taro and sweet potato production utilizing the residual fertility from soils previously grown with cash crops. Initial analysis of the sandy clay loam soil used indicated adequate amounts of phosphorus and potassium, low nitrogen, and moderate organic matter content. Sweet potato planted after beans yielded the highest fresh herbage yield and marketable root yield of 22.8 t/ha followed by those planted after carrots with a marketable root yield of 15.8 t/ha. Taro planted after carrots significantly yielded the highest corn and stalk yield with a corn yield of 9.8 t/ha followed by taro planted after white potato with corn yield of 7.6 t/ha. The lowest corn and stalk yields were observed from taro planted after garden pea and cabbage.
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