ISHS Acta Horticulturae 119: III International Symposium on Water supply and Irrigation in the open and under Protected Cultivation
EFFECTS OF SPRINKLER IRRIGATION ON BUTTER LETTUCE IN RELATION WITH WATER QUALITY |
| Author: | A.J. Hellings |
| Abstract:
Sprinkler irrigation in spring and in cool periods during summer increased both production and quality of the crops. In hot periods, after formation of the heads had started, weekly irrigation caused tipburn. The production of locally seeded lettuce with irrigation was about 30% lower than that of transplanted lettuce. Without irrigation the yield was about 40% lower. In the years 1974 through 1978 sprinkler experiments on lettuce were carried out on sandy soils using groundwater of good quality. The production and quality of the transplanted lettuce was increased by irrigation, particular in dry and hot periods. Only in extremely dry and hot periods (summer 1976) frequent irrigation gave better results than weekly irrigation. In all cases the use of good quality irrigation water decreased the sensibility to tipburn. | |
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