Effect of foliar application and mineral fertilizer on growth parameters and content auxins, GA and CK in cucumber leaves

The experiment was conducted in an unheated plastic house at Al-Abassia/Al-Najaf Governorate during autumn seasons of 2016. The objective of this work to study the effect of foliar and soil applied fertilizers on growth and yield of cucumber (Cucumis sativus L. cv. Siyff). Results indicated that: The foliar spray with 10ml L−1 of the liquid fertilizer was superior in all traits and studied gave the highest value in leaf area index (20.8) plant dry weight (40.9) g, IAA (185.85) mg kg−1, GA3 (187.2) mg kg−1, CK (178.1) mg kg−1. The treatment (F1) of mineral fertilizer was superior significantly in leaf area index (23.5) and plant dry weight (42.8) g. The treatment (F3) was superior in IAA (196.39) mg.kg−1 and GA3 (199.8) mg.kg−1, CK (196.1) mg kg−1. The results showed that the interaction treatment spraying foliar fertilizer at a concentration 10ml.L−1 and 50% of mineral fertilizer was superior significantly in IAA (211.83) mg.kg−1, GA3 (221.6) kg−1, CK (214.9) mg. kg−1.