GROWTH AND DEVELOPMENT, WATER ABSORPTION AND MINERAL COMPOSITION OF TOMATO PLANTS GROWN WITH THE NUTRIENT FILM TECHNIQUE IN THE EAST MEDITERRANEAN COAST REGION OF SPAIN
Growth and development, water consumption and nutrient leaf content of greenhouse tomato plants grown in nutrient film culture or in soil in mild winter conditions have been compared throughout a 5-month growing period after transplanting, from early January until the end of May. Total dry weight of plants lineally increased with time and parallelled the growth of vegetative parts. Total dry weight of plants in NFT was higher on the 46th day after transplanting but subsequently was not significantly different from that of the plants grown in soil. The percentage of dry matter was higher for all plant parts in the soil-grown crop, whereas the stem dry weight/ stem height ratio was always lower in plants grown with NFT. Plant growth rate was faster in these plants and brought about a reduction in the time which elapsed from transplanting to anthesis in the two first inflorescences. Water consumption in plants grown in hydroponics was lower, and was positively and lineally related to crop evapotranspiration. A consistent drop in nutrient leaf concentration took place during April except for iron and zinc whose levels dropped one month earlier. Average levels of nutrients maintained in leaf tissue were higher for all elements in the crop grown in NFT except for calcium and iron. Leaf zinc content in plants in water culture reached remarkably high levels.
Noguera, V., Abad, M., Pastor, J.J., Mora, J., Armengol, F., Serrano, A. and García-Codoñer, A.C. (1988). GROWTH AND DEVELOPMENT, WATER ABSORPTION AND MINERAL COMPOSITION OF TOMATO PLANTS GROWN WITH THE NUTRIENT FILM TECHNIQUE IN THE EAST MEDITERRANEAN COAST REGION OF SPAIN. Acta Hortic. 221, 203-211