ISHS Acta Horticulturae 559: V International Symposium on Protected Cultivation in Mild Winter Climates: Current Trends for Suistainable Technologies
NUTRITIONAL ASPECTS AFFECTING TOMATO QUALITY IN SOILLESS CULTURE |
| Authors: | J. Brañas, M.A. Ibañez, P. Lorenzo, M. Gallardo, F. Romojaro |
| Keywords: | Osmotic potential, plant nutrition, quality, tomato |
| Abstract:
In this paper the influence of nutrition on fruit quality of a tomato soilless crop is reported. Five treatments were carried out with decreasing levels of NO3-, K+ and Ca2+ which were maintained during all the cropping period. The plants, grown in perlite-bags, were irrigated under moderate salinity conditions, keeping constant the sodium chloride concentration in all trials. No signs of deficiency were shown by plants. Differences were observed in total fruit yield, fruit size, titratable acidity and sugar content. However all the trials showed similar colour and hardness. This experiment suggests that the increase in the quality of the tomato fruit can result in a decrease of total yield. | |
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