Enhancement of growth and yield of faba bean plants grown under sandy soil conditions by foliar spraying of different doses of yeast extract and humic acid

Foliar spraying is one of the critical operations in agricultural practices. In this concern two field experiments were fulfilled during two seasons of 2016/2017 and 2017/2018 under sandy soil at ElNubaria region. The goal of this test is to discuss the vegetative growth, total yield, and chemical characteristics of broad bean plant (Vicia faba L.) cv. Spanish as influenced by foliar spraying of doses yeast extract and humic acid it was posture at once or on double doses and without yeast extract and humic acid and interaction effect on plant growth, yield, and chemical seeds characteristics. The results of plant growth parameters like plant length, number of leaves/plant, fresh weight of leaves and whole plant and the elevated total seeds yield as well as the rising content of the percentage of N, P, K and protein of broad bean seeds tissues were detected with that plants which sprayed as double doses of humic acid (4 cm/L) and double doses of yeast extract (6 ml/L) compared to one doses and without spraying.