Influence of fertiliser treatment on apple fruit composition and physiology

摘要

The contents of total phosphorus, ethanol-soluble phosphorus, ethanol-insoluble phosphorus, magnesium, calcium, and potassium were determined in tissue of apple fruits from trees receiving no fertiliser (U) and from trees receiving the fertiliser treatments N, P, NP, and NPK (N=21b sulphate of ammonia, P=4 lb superphosphate, and K=l lb sulphate of potash per tree per year).