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A field experiment was carried out to evaluate the bio-efficacy of Trichoderma asperelloides and Ampelomyces quisqualis against powdery mildew of grapes at ICAR- National Research Centre for Grapes, Pune in 2021-22 and 2022-23. It was observed, that spray and drench of Trichoderma asperelloides @ 2 mlL-1 along with drench of Ampelomyces quisqualis @ 5 mlL-1 and spray of Sulphur @ 2gL-1 of water manifested the lowest percent disease index on leaves and bunches with PDI 21.84 and 19.21 respectively. The percent disease control on leaves and bunches was 54.64 and 59.04 respectively. Moreover, the application of Trichoderma asperelloides and Ampelomyces quisqualis solo and in combination with sulfur showed a significant impact on qualitative parameters such as pH, total soluble solids, acidity, berry diameter, berry length and shelf life. Hence this treatment may be recommended for the management of powdery mildew of grapes.
Kokare et al. (Fri,) studied this question.
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