EFFECT OF SOME NANO-CHEMICAL COMPOUNDS ON SALINITY TOLERANCE FOR GREEN BEAN PLANTS

Abstract

Two pot experiments were carried out during the two successive autumn seasons of 2013 and 2014 in a private farm in Abou Ghalib region, Giza governorate to investigate the effects of using two different nano materials namely nano calcium and nano silicon to alleviate the effect of different salinity levels on the growth and yield of green bean plants (Phaseolus vulgaris, L.) cv. Pulista under sand soil conditions. The important obtained results could be summaries as following: 1- Effect of saline water irrigation: • Saline water irrigation at 500 ppm gave the tallest plant height, but the shortest value of plant height recorded with that plants which irrigated with that water contained the highest salinity level 1500 ppm. • The heaviest fresh and dry weight of whole plants recorded with plants irrigated with 500 ppm, while the lowest fresh and dry weight was found with those plants which irrigated with the highest salinity levels (1500 ppm). • The widest leaf area was associated with that plants irrigated with the lowest salinity level, i.e. 500 ppm, but the plants which irrigated by water contains 1500 ppm gave the lowest leaf area. • The greatest leaves numbers per plant were obtained by irrigation with salinity level of 500 ppm; while the lowest leaves number