Effect of Soil Addition and Foliar Spray with Some Safety Compounds on Growth, Productivity and Quality of Snap Bean (Phaseolus Vulgaris L.)

Mohamed1, M.H.M., A.H.Bahnasawy1, Y.A.Salama2 and Noha.A.Abd-Elghaffar1.

Abstract

Two field experiments were carried out during the two successive autumn seasons of 2016 and 2017 in private sector farm at Qaha village, Kalubia Governorate, Egypt, to investigate the effect of soil addition of humic acid, seaweed extract and effective microorganisms (EM) as well as the foliar spray with calcium, jasmonic acid and chitosan on vegetative growth, chemical composition of plant foliage, fruit yield and its quality, of snap bean plants (phaseolus vulgaris L.) cv. Bronco. This experiment included 16 treatments as follows, four soil addition of humic acid at 10g/l, seaweed extract at 10ml/l, EM at 150ml/l beside the control treatment. In addition,four foliar spray treatments with calcium thiosulphate at 2ml/l, chitosan at 2g/l, jasmonic acid at 200 ppm and the control treatment (spray with tap water).The soil addition treatments were added three times started after 15 days from sowing and one week interval, while spray treatments were started after 30 days from sowing and every weekly interval for four times through the growing season. Treatments were arranged in a split plot design with three replicates. Soil additions were distributed in the main plots, while foliar spray treatments were randomly arranged in the sub- plots. Obtained results showed that,soil addition of snap bean plants with seaweed extract at 10ml/l three times combined with spraying the plants with calcium thiosulphate at 2ml/l four times are recommended to increase the vegetative growth, total produced early, exportable and total yield as well as chemical fruit quality.

Key words

snap bean, safety compounds, soil addition, foliar spray