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Some aspects of the nutrition of tomatoes grown in recirculating solution

, : Some aspects of the nutrition of tomatoes grown in recirculating solution. Acta Horticulturae (82): 121-132

A series of tomato experiments collectively covered the ranges 10-320 p.p.m. N and 20-375 p.p.m. K. Varying proportions of ammonium-N (25%, 10% and 0) were included in order to assess the potential for pH control. High (275 p.p.m.) N including 25% NH4-N had little effect at first but ultimately reduced yield, fruit size and root growth, probably because of excess ammonium-N and acidity.

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