Phosphorus content of acid soils as affected by different N levels and sweet potato uptake
1991
Bautista, G.T. | Zamora, L.P.C. (Visayas State Coll. of Agriculture, Baybay, Leyte (Philippines). Philippine Root Crop Research and Training Center)
Changes in phosphorus (P) content of acid soil as affected by different nitrogen (N) levels and sweet potato uptake were studied using pot experiment. Application of fertilizers enhances the availability of added inorganic P in acid soils. These increases the amount of available P for sweet potato uptake. Reduction of P content of acid soil was observed at different stages of plant growth and this is evident at harvest. An exponential relationship was established between P removed from acid soil at harvest and root yield, emphasizing the important role planted by phosphorus aside from nitrogen and potassium in root growth and formation of sweet potato
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