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vol. 7, nr. 3 (2006)
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Effect of substrates and nutrient solutions on the status of nitrogen, phosphorus and potassium in greenhouse tomato
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Anna Pawlińska, Andrzej Komosa
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Department of Horticultural Plant Nutrition, Agricultural University, ul. Zgorzelecka 4, 60-198 Poznań |
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vol. 7 (2006), nr. 3,
pp. 691-698
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abstract:
The experiments were made in the years 1999-2002 in a horticultural farm in Mojesz near Lwówek Śląski with the objective of testing the effect of different levels of nutrient solutions and inert or organic substrates on the nitrogen, phosphorus and potassium status of greenhouse tomato cv. ‘Cunero’. In nutrient solution No. I standard levels of macro and microelements were used, as follows: NH4 < 14,0; N-NO3 210,0; P 62,0; K 371,0; Ca 190,0; Mg 55,0; S-SO4 120,0; Fe 1,500; Mn 0,650; Zn 0,500; B 0,420; Cu 0,070; Mo 0,070; pH 5,50; EC 3,2 mS·cm-1. In solution No. II nutrient levels were higher by 20 %. Plants were grown in the inert media: rockwool and expanded clay, or in the organic ones: sawdust and mixture of peat and bark from coniferous trees 1:1 (v/v). Contents of N, P and K were determined in the index part of greenhouse tomato which was the 9-th leaf from the top of the plant. It was shown that greenhouse tomato grown in the inert media had higher status of phosphorus and potassium nutrition than that grown in organic substrates. There were no significant differences for nitrogen.
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keywords:
inert media, organic media, nutrient status, tomato
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original in:
Polish
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