summer pruning (L.E.) Cost of cultural 8000 8000 8000 practices (L.E.) Total cost 8800 8800 8000 (L.E.) Yield 14952 14440 12043 (Kg) Kg 3.00 3.00 3.00 (L.E.) Yield 44856.0 (L.E.) The net profit 36056.0 34521.1 28127.6 (L.E.) 2015, season Yeast (L) at 60 60 --- three dates Price of yeast (L.E.) at 300 300 --- three dates Labour cost 100 100 --- (L.E.) Labour cost of summer 400 400 pruning (L.E.) Cost of cultural 8500 8500 8500 practices (L.E.) Total cost 9300 9300 8500 (L.E.) Yield 16082 15487 12875 (Kg) Kg 3.00 3.00 3.00 (L.E.) Yield 48246.5 46459.6 (L.E.) The net profit 38946.5 37159.6 30124.7 (L.E.) 4. Discussion pruning gave higher growth and yield in comparison In this study, two tested yeast, (Saccharomyces with control treatments. The increase of total and were investigated microbial count and total yeast count in the cerevisiae Candida tropicalis) for their role as a plant growth promoting individually rhizosphere of grape plants proved that inoculation or in combination with summer pruning under field with and Saccharomyces cerevisiae Candida conditions. As shown in the results the growth of increased the soil microbial population tropicalis grape inoculated with yeast in combined with summer (Botha, 2011). It was generally believed that
summer pruning (L.E.) Cost of cultural practices (L.E.) 8000 8000 8000 Total cost (L.E.) 8800 8800 8000 Yield (Kg) 14952 14440 12043 Kg (L.E.) 3.00 3.00 3.00 Yield (L.E.) 44856.0 The net profit (L.E.) 36056.0 34521.1 28127.6 2015, season Yeast (L) at three dates 60 60 --- Price of yeast (L.E.) at three dates 300 300 --- Labour cost (L.E.) 100 100 --- Labour cost of summer pruning (L.E.) 400 400 Cost of cultural practices (L.E.) 8500 8500 8500 Total cost (L.E.) 9300 9300 8500 Yield (Kg) 16082 15487 12875 Kg (L.E.) 3.00 3.00 3.00 Yield (L.E.) 48246.5 46459.6 The net profit (L.E.) 38946.5 37159.6 30124.7 4. Discussion In this study, two tested yeast, (Saccharomyces cerevisiae and Candida tropicalis) were investigated for their role as a plant growth promoting individually or in combination with summer pruning under field conditions. As shown in the results the growth of grape inoculated with yeast in combined with summer pruning gave higher growth and yield in comparison with control treatments. The increase of total microbial count and total yeast count in the rhizosphere of grape plants proved that inoculation with Saccharomyces cerevisiae and Candida tropicalis increased the soil microbial population (Botha, 2011). It was generally believed that
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