El tameimy El syeid M. Ismail, El syeid Ahmed Fahmy
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Antitranspirants, Crushed rice straw, Eggplant, Organic fertilization
A field experiment was carried out at a private Farm in Rowad Village belong to Sahl El-Husseiniya, Sharkia Governorate during the two growing seasons of 2017 and 2018 to study the effect of organic fertilization (crushed rice straw "CRS" treated with urea at levels of 120 or 240 Kg and composted 90 days) and foliar spraying with some antitranspirants (magnesium carbonate and Kaolin) on vegetative growth, yield and its components as well as chemical constituents of eggplant either leaves or fruits c.v Black Beauty cultivar grown under saline soil conditions. The experiment was carried out by using split-plots system in a randomized complete blocks design with three replications. The main-plots were arranged with organic fertilization treatments. While, the sub-plots assigned to foliar spraying with some antitranspirants compounds. The obtained results of this investigation can be summarized as follows:
-Vegetative growth, yield , its components and chemical constituents of either the leaves or in the fruits of eggplant were significantly influenced by different crushed rice straw (CRS) levels treated with urea and fermented 90 days in the both seasons. The maximum values of these characters were produced from using crushed rice straw at 4.8 t/ha and mixed with 240 kg urea 46% N, followed by using creshed rice straw at 2.4 t/ha mixed with 120 kg urea 46% N in both seasons.
-Foliar spraying eggplant plants with magnesium carbonate at 2% and Kaolin at 2% as antitranspirants compounds significantly improved vegetative growth, the yield and its components as well as the chemical constituents either in the leaves or in the fruits compared with the control treatment during both seasons. The highest values of these traits were resulted by using Kaolin at 2% in both seasons.
-The favourable results of growth, yield and its components as well as the chemical constituents in the leaves or the fruits were obtained from treatment of the interaction between using crushed rice straw at 4.8 t/ha mixed with 240 kg urea 46% N and foliar spraying with Kaolin at 2%, which gave the highest results.
For that, it could be recommended that using crushed rice straw at the rate of 4.8 t/ha and mixed with 240 kg urea 46% N which composted 90 days and adding it befor transplanting and foliar spraying the eggplant plants grown under saline soil conditions with Kaolin at 2% three times starting at 25 days after transplanting and repeated every 15 days intervals to enhance vegetative growth characters, yield and its components as well as the chemical constituents of eggplant fruits under the environmental condition of this research i.e soil salinty.
