INTEGRATED CONTROL OF DOWNY MILDEW DISEASE IN GRAPE | ||
| Menoufia Journal of Plant Protection | ||
| Article 6, Volume 3, Issue 2, March and April 2018, Pages 85-86 PDF (310.99 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjapam.2018.123593 | ||
| Authors | ||
| M. M. Ammar1; G. A. Amer1; A. M. Abdel- All2 | ||
| 1Prof. of Plant Pathology, Fac. of Agric., Menoufia Univ. | ||
| 2Lecturer of Plant Physiology, Fac. of Agric., Menoufia Univ. | ||
| Abstract | ||
| The present study was conducted at 2015 and 2016 to fined out the best ecofriendly method(s) to control downy mildew disease of grapes ( Plasmopara viticola Berk & Curt) . Water extracts of castor, oleander and mintha significantly reduced the disease incidence , increased chlorophyll and carotein contents , improved plant water relations and increased yield production , than the non-treated control plants. - The same observations were obtained using emulsion oils of castor, thyme and mintha . Castor water extract and emulsion oils showed the best results . - Aplication of Bacillus subtilis alone or in combination with Trichoderma harzianum (5g/l + 2.5m/l) respectively gave much better results of disease managment, physiological aspects and yield components . - Integration of the biocontrol agents with plant extracts and /or plant oils gave good results , and the best was obtained when thyme oil was integrated with Bacillus subtilis (10⁶ cfu). Individual application of the recommended fungicides severly reduced the disease severity of infection, improved the physiological statues and significantly increased yield production of both Crimson and Flame grape cultivars. | ||
| Keywords | ||
| Plant extracts; Plant oils; Downy mildew; Plasmopara viticola; photosynthetic pigments; Water relations and Yied and its components | ||
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