Phylum, Order |
Ascomyte, Erysiphaceae |
Powdery Mildew
B1 Powdery Mildew on Rosa |
Scientific Name |
Eryspiple, Microsplocera, Pyllactinea, Podosphaera, Sphaeotheca, Ursicinula, Oidinum |
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Common Name |
Powdery Mildew | |
Habitat |
100 species found worldwide. | |
Physical Description |
Obligate plant parasite, White mycelium covers plant, like wool. | |
Life Cycle |
Produces Conidia spores and Ascospores from fruting grey bodies, this is carried by insect or wind to neighbouring plants, and mycelium may grow through soil or wound into the plant. |
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Method Of Attack |
Mycelium feeds on sap internally. |
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Damage Caused |
Plants discolour, yellow, distort and debilitate plant into decline and death. Serious in warm, dry conditions. |
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Control Methods |
Fungicide applied in summer at 2 week intervals during dry season. Systemic fungicides best: Triforine, benomyl, thiophanate-methyl. Space plants, lower temperature, water plants. Maintain hygiene. |
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Stage Vulnerable |
All |
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Plants Affected |
Maples, Anenomes, Anthirhinium, Aster, Begonia, Calendula, Carnation, Carrot, Chrysanthemum, Clematis, Cyclamen, Honeysuckle, Hydrenga, Laburnum, Marigold, Lupin, Myosotis, Poppies, Phlox, Valerian. |
Information Collated by James M. Burton as part of H.N.D. Course at Pencoed Agricultural College.
Chemical Information Correct as of 06:06:97. Always read and follow the instructions when using fungicides.