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vol. 7, nr. 3 (2006)
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Yielding and chemical composition of greenhouse tomato grown in ecological substrates
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Józef Nurzyński
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Department of Cultivation and Fertilization of Horticultural Plants, University of Agriculture, ul. Leszczyńskiego 58, 20-068 Lublin |
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vol. 7 (2006), nr. 3,
pp. 681-690
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abstract:
The experiments were carried out on tomato grown in sand, peat, straw or rockwool, using a fertigation system without recirculation with 20% overflow liquid feed. All substrates were fertilised in the same way. During the entire vegetation period, N, K, Ca, Mg contents were the lowest in sand compared to peat and rockwool, while leaf content did not vary significantly. In the sand and peat substrates, use of nutrient solution that contained 40% more N, K, Ca, Mg than standard solution resulted in reduction of fruit yield. Usefulness of rye straw and wheat straw (cut into pieces) as substrates for greenhouse tomato was proved. Compared to rockwool, no substantial difference in yielding was indicated. After 34-week vegetation period (at the end of the experiment) about 70% of straw was mineralized.
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keywords:
greenhouse tomato, substrates, sand, straw, rockwool
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original in:
Polish
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