EFFECTS OF DRIP APPLIED WATER LEVEL ON LEACHED NITROGEN AND WATER USE OF GREENHOUSE SQUASH

Squash (Cucurbita pepo L. cv. Elite) were grown inside an unheated plastic greenhouse on a sand-mulched soil, provided with drainage lysimeters, along a three-year study. Three drip applied water treatments (normal, low and high) induced differences in the leached nitrogen with the smaller value in the low irrigation treatment, which reached the higher water use efficiency.