Physiological studies of casava: Nutrient losses from cassava field as compared to other crops
1990
Vichan Vichukit | Ed Sarobol | Chamlong Jeamjamnanja (Kasetsart Univ., Bangkok (Thailand). Faculty of Agriculture. Dept. of Agronomy)
Nutrient losses from cultivated fields by soil erosion and crop removal through yield and plant-part removal taken out of the field may be different in field planted to other field crops. The investigation was done by planting cassava for root yield and compared the losses to cassava for forage, corn, sorghum, peanut, mungbean and pineapple, on Mab Bon soil series with 7 percents slope. The RCB designed was used with 3 replications. The experiment was conducted at Sriracha Research Station, Chonburi province and the experimental period was 22 months. The results indicated that losses of such nutrients as N, P, K, Ca and Mg through crop removal by cassava for root yield were 16.3, 3.0, 16.7, 11.6 and 3.1 kg/rai, respectively. The field planted to cassava for root yield lost N lesser than peanut, corn and mungbean fields; lost P lesser than corn, sorghum and peanut fields; lost K less than pineapple field, but Ca & Mg greater than pineapples, mungbean, corn, peanut and sorghum fields. Simultaneously, losses by soil erosion were 11.9, 0.7, 1.7, 8.9 and 1.2 kg/rai, respectively. These losses were the largest followed by losses from fields planted to mungbean, cassava for forage, sorghum, peanut, pineapple and corn.
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