ISHS Acta Horticulturae 487: VI International Symposium on Processing Tomato & Workshop on Irrigation & Fertigation of Processing Tomato
RESPONSES OF PROCESSING TOMATO TO WATER REGIME AND FERTILIZATION IN CENTRAL ITALY |
| Authors: | G. Colla, R. Casa, B. Lo Cascio, F. Saccardo, O. Temperini, C. Leoni |
| Keywords: | drip irrigation, fruit quality, growth period, fruit set, water deficit |
| Abstract:
In a study carried out at Viterbo, 9 drip irrigation treatments and 3 fertilization treatments were compared in a split-plot experiment. Water deficits were imposed by reducing irrigation volumes to 50% or 75% of crop evapotranspiration in 2 growth periods: before or after fruit set. Irrigation deficit in the 1st growth period reduced the number of flowers leading to a decrease in the number of fruits and in the marketable yield. Water deficits improved the quality of fruits increasing soluble solids and acidity. Reducing irrigation by 25% before fruit set and by as much as 50% in the fruit development and ripening stages resulted in no significant decrease of soluble solid yield. Fertilization affected mainly plant vegetative growth, increasing LAI and biomass. | |
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