WATER CONSUMPTION AND YIELD RESPONSE OF TOMATO IN RELATION TO WATER AVAILABILITY AT DIFFERENT SOIL DEPTHS
The paper illustrates the results of a research conducted to evaluate the productive response and the water absorption capacity of tomato at various soil depth in dependence on water availability. Research was conducted in Padova in independent soil layer lysimeters. Maximum growth and yield of the crop were reached keeping a relatively high percentage (75–90% a.w.) of available water in all soil layers taken into consideration (0 down to 0.9 m). Under these conditions both number of fruits per plant and their size increased while the corresponding contents of dry matter, sugar, proteins and titratable acidity have decreased. When the moisture level was optimum throughout the entire soil depth, nearly 45% of the water altogether consumed was absorbed from the soil upper 0.3 m. With low water tension only in the soil top layers, moisture was uptaken from them in a clearly preferential measure while the contrary came true when the moisture was availabale in a great measure in deeper soil layers. When water availability was low throughout the entire soil depth, tomato moisture consumption proved inferior to the other conditions investigated. Therefore tomato used moisture present at remarkable depth (0.6–0.9) up to a significant extent (about 22%).
Giardini, L., Giovanardi, R. and Borin, M. (1988). WATER CONSUMPTION AND YIELD RESPONSE OF TOMATO IN RELATION TO WATER AVAILABILITY AT DIFFERENT SOIL DEPTHS. Acta Hortic. 228, 119-126