| 31. | The vine has some slight resistance to the fungal disease of botrytis bunch rot, downy mildew, and phomopsis.
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| 32. | Downy mildew produces small yellow fungal spots on the leaf that cause the plant to wither and die.
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| 33. | Cabernet Cortis ripens early, is highly resistant to downy mildew and botrytis, but is sensitive to powdery mildew.
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| 34. | Yellow spots on the living leaf may be caused by " Peronospora gei " a downy mildew.
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| 35. | Plantings have declined in recent years as the vine has shown high sensitivity to downy mildew and black rot.
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| 36. | Resistant to scab and to powdery and downy mildew, it matures in 58 days and is sweet and crisp.
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| 37. | Cultivars were vulnerable to downy mildew, which caused sharp reductions in quality and in select cases complete crop loss.
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| 38. | The particular clones planted in Australia were of poor quality and highly susceptible to coulure, frost and downy mildew.
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| 39. | Downy mildew is controlled with the same foliar fungicides as leaf blight : azoxystrobin, copper, mancozeb, maneb, and mefenoxam.
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| 40. | De Chaunac is known to have a very vigorous growth habit and good resistance to powdery mildew and downy mildew.
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