Influence of the gibberellic acid (GA3) applications on the powdery mildew and grey mould on the grape variety Sultana in the Aegean Region

Ari, A.; Oz, S.; Cinarli, I

Influence of the gibberellic acid (GA3) applications on the powdery mildew and grey mould on the grape variety Sultana in the Aegean Region

1996

Ari, A. | Oz, S. | Cinarli, I (Plant Protection Research Inst., Bornova, Izmir (Turkey))

The effects of GA3 applications on the grey mould and powdery mildew have been studied in 1990 and 1992. The applications have been conducted on Vitis vinifera L. spp. sativa var. Sultana, at the dosages 10 ppm when the inflorescense 2-4 cm. long, 15 ppm when the blossoming 60-80 , end 20 ppm when the berries 3-5 mm. diameter. GA3 applications have been found to be effective on disease severity reduction of grey mould while uneffective on powdery mildew

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