Impact of spraying chitosan and turmeric extract on ‎fruiting of Flame seedless grapevines

Document Type : Original articles

Authors

1 ‎Organic Farming central Lab. ARC, Giza, Egypt‎

2 Hort. Dept. Fac. of Agric. Al- Azhar Univ. (Assiut branch) - Egypt

Abstract

SUMMARY
 During 2020 and 2021 seasons, Flame seedless grapevines were sprayed three times at growth start, just, after berry setting and one month later with chitosan at 0.025, 0.05 and 0.1% and turmeric extract at 0.1, 0.2 and 0.3% as single or combined application examining the effect of these treatments on growth, vine nutritional status, berry setting %, yield as well as berry colouration and quality. Single and combined applications of chitosan and turmeric extract had an obvious promotion on some growth aspects, vine nutritional status, berry setting, yield, berry colouration % and quality of the berry relative to the control treatment. Combined applications were superior than using each material alone.
Using chitosan was considerably favourable than using turmeric extract in improving some growth, vine nutritional status, berry setting, yield, berry colouration and berry quality. A slight promotion on these characteristics was observed among the higher two concentrations of chitosan namely 0.05 to 0.1% and turmeric extract namely 0.2 to 0.3. Carrying out spraying of a mixture chitosan at 0.05 % and turmeric extract at 0.2% at growth start, just after berry setting and one month later was responsible for improving yield and berry quality of Flame seedless grapevines grown under Minia region conditions

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