Response of Snap Bean Plants to some Treatments under Temperature Stress Conditions

Abstract

This work was carried out at the Experimental Farm of El-Baramoon Research Station, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt, during the early winter season of 2017/2018 and 2018/2019 and late summer seasons of 2018 and 2019 to study the effect of soil applications, i.e., seaweed (5 gm/100 L) (feldspar 75 kg/fed.), foliar applications, i.e., chitosan (175 ppm), yeast extract (20 ml/l), proline (50 ppm), salysilic acid (150 ppm), ascorbic acid (200 ppm), potassium silicate (100 ppm), ATP (0.03 gm/l), Royal jelly (0.1 g/l), fulvic acid (0.25 g/l) and citric acid (0.3 g/l). on growth, yield and chemical composition on snap bean cv. Giza 6. The obtained results revealed that, summer season data gave higher value of growth, yield and chemical composition of plants compared with the winter seasons date. Soil addition with seaweed at 5gm/l and spraying chitosan at 175 ppm gave the highest growth, yield and chemical components of bean plants, followed by yeast extract at 20 ml/l, and proline at 50 ppm. Sowing snap bean cv. Giza 6 in 20th May with adding seaweed as a soil at 5 gm/l and spraying with chitosan at 175 ppm introduced the best interaction with respect to growth, yield and chemical composition of plant. From the obtained results it could be recommended that sowing snap bean cv. Giza 6 in 20th May with seaweed extract addition at 5g/100 L. and spraying with chitosan at 175 ppm and/or yeast extract at 20 ml/l, and/or proline at 50 ppm improved growth, yield and chemical composition of snap bean growing at summer season.