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Indices of nutrition of onions with nitrogen, phosphorus and potassium. Part I. Pot experiments


, : Indices of nutrition of onions with nitrogen, phosphorus and potassium. Part I. Pot experiments. Roczniki Nauk Rolniczych, A 100(1): 99-109

The effects of various levels of N, P and K on the yield, size and weight of onions grown in 6-l pots were determined in 2-year studies and the results are tabulated. N had the greatest effect on bulb yield but depressed it at excessive rates. The effect of P and K was noticeable only in soils deficient in these nutrients. No adverse effects of excessive P rates were noted but excessive K depressed the yield.

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