| 21. | And check for diseases and insects, such as powdery mildew, whiteflies and aphids.
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| 22. | A powdery mildew disease of hops has sometimes been erroneously called blue mold.
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| 23. | _Powdery mildew : This is a powdery white substance on foliage and stems.
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| 24. | The loose bunches help to prevent Bunch rot, Powdery mildew and Downy mildew.
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| 25. | It is used to control almost all fungal diseases of plants except powdery mildews.
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| 26. | The main goal, however, has been disease resistance, especially to powdery mildew, not hardiness.
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| 27. | The prime fungicide used to control powdery mildew is myclobutanil.
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| 28. | Uncontrolled powdery mildew rots the grapes from the inside out.
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| 29. | To limit powdery mildew resistance, growers alternate treatments by employing multiple modes of action.
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| 30. | Pots crowded together can trap air and humidity, providing ideal conditions for powdery mildew.
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