Effect of foliar application of compost water extract, humic acid, EDTA and micronutrients on the growth of fenugreek plants under sandy soil condition

Foliar application of liquid organic fertilizer, compost water extract, combined with micronutrients solution in sulfate form, EDTA form or humic acid form gave the highly significant values for fenugreek plants height and weight of seeds. Seven treatments such as compost tea, every three forms of micronutrients and three combinations (1:1) of compost tea with each micronutrients form besides untreated control were applied as foliar spray twice to Trigonella plants at 35 days and at 70 days from sowing. The plant height increments were by 48 and 50% for sulfate form with compost tea, by 67 and 69% for humic acid form with compost tea and by 66% for EDTA form with compost tea for the first and second season, respectively. The values of fenugreek weight of seeds for combined compost tea in both seasons were by (63 and 41%) with sulfate mineral solution, by (76 and 50%) with EDTA and by (90 and 65%) with humic acid, respectively. It is obvious from the results that using compost tea in a combination with micronutrients forms can reduce the chemical fertilizer dose by 50% and enhance the fenugreek growth better than the chemical fertilizer does.