ISHS Acta Horticulturae 119: III International Symposium on Water supply and Irrigation in the open and under Protected Cultivation
SOIL MOISTURE DISTRIBUTION AND YIELD OF DRIP IRRIGATED TOMATO AS INFLUENCED BY DRIPPER SPACING AND IRRIGATION DEPTH |
| Authors: | D. Cacchi, P. Rossi Pisa |
| Abstract:
A field experiment was performed on a loamy clay to compare the effect of different spacings between drippers and irrigation depths on the yield of processing tomato (Lycopesicum esculentum Mill. cv 'Titano M'). At the spacing of 0.5 m drippers of 2 and 4 1/h discharge rates were used, while drippers of 4 and 8 1/h were used at the 1 m spacing. The irrigation was applied daily during a time equal for all treatments. The water application was scheduled on the class A pan evaporation rate. Soil samples were collected to evaluate the soil moisture along selected profiels. Two-dimensional contours of equal soil moisture revealed greater water amount underneath the drippers spaced 0.5 m than underneath those spaced 1 m, unrespectively to the water applied. The increment of the yield caused by the irrigation was affected not only by the irrigation depth but also by both the spacing and the discharge rate of the emitters. | |
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