Effect of Foliar Spraying by Some Natural Extracts for Improving Snap Bean Production

Document Type : Original Article

Abstract

 TWO FIELD experiments were carried out during two summer ……season of 2012 and 2013 at the experimental farm of Kaha Station, Qalubia Governorate, to study the influence of foliar nutrition with some natural stimulants on snap bean plants c.v Poulista using ratios of compost tea 1:10, 1:20 and 1:30 (compost: water), licorice extract, yeast extract stimufol compound as well as hammer compound (seaweed extract) and water as a control. The results indicated that spraying with licorice extract had the highest values on number of leaves/ plant, leaf area, fresh and dry/ plant weight and total pods yield, followed by spraying with compost tea at the ratio of (1:30) and yeast extract, respectively, while the treatment of spraying with water gave the lowest values. The best treatments concerning the fresh and dry pod weight were licorice extract and compost tea (1:20). There was no significant effect of all treatments on plant length, pod length or pod diameter, total leaf chlorophyll, N %, K % and protein % on pods during the two growing seasons. Concerning P % in pods its found that using compost tea (1:20) followed by licorice extract were the best treatments .While, licorice and yeast extracts resulted in the highest values of total sugars in both growing seasons, respectively. Generally, spraying bean plants with any of the experiment treatments, especially licorice extract, compost tea (1:30), yeast and compost tea (1:20), respectively encourage green pod yield with best quality.