Use of some bio stimulants and amino acids application for improving the growth, yield and quality of cucumber fruits under greenhouse conditions / Mervat Farrag Farag ; Supervised Said Zakaria Abdelrahman , Khaled Elsayed Ali Abdelati , Hassan Ali Hassan

Thesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Vegetable

The current study was ccted in the greenhouse of the Faculty of agriculture, Cairo university during 2012 / 3013 and 2014 / 2015 early autumn seasons to study the effect of amino acids as foliar application and using four bio-stimulants; viz., microbial inoculants, mixture of nitrogen fixing bacteria (azotobacter sp), phosphate dissolving bacteria (Bacillus megaterium) and potassium dissolving bacteria (Bacillus circulans), humic acid, effective microorganisms (EM) and yeast extract strain (saccharomyces cerevisiae) as soil fertilizer on vegetative growth characters, chemical composition, yield and its components as well as fruit quality of cucumber cv. safa 62. The experiment treatments which were the combinations between amino acids (0 and 2 g/l) and four bio-stimulants were arranged in a split plot design experiment with three replicates in addition to spraying with tap water (control). Results indicated that spraying cucumber plants with amino acids significantly affected plant length, number of leaves, leaf area, N and K content in leaves, TSS and NP content in fruits in both seasons. Bio stimulants increased all characters as compared with untreated control. Microbial inoculants gave the highest significant values plant length, number of leaves, average leaf area, dry weight, chlorophyll content of leaves and number of fruits/m2, content of N and K in leaves

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