Cereal crop mites

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• Mainly feed and reproduce on weeds in early spring. After a period of time, crawl up trees. • Spread all over the trees during Jun. Cause most severe damage in mid-late Jul. to Aug. Population decreases after Sep. • Most eggs laid on two sides of main vein or inside webs on the backsides of leaves. Average is 70 eggs/female; maximum, 200 eggs/female. A female can oviposit 3-14 eggs a day.
3. Factors affecting population # Climate conditions Prefer high temperature and low humidity Insecticide use Host plants 红富士、印度、国光等优质品种受害尤为严重 Natural enemies
Page 1 and 2: Chapter 9 MITES Wu Junxiang Li Yipi
Page 3 and 4: Chapter 9 MITES Lecture Outline •
Page 5 and 6: 1. Reproduction and Development
Page 7 and 8: 3. Feeding Types • Phytophagous
Page 11 and 12: 4. Spread and Transmission • Init
Page 13 and 14: 麦岩螨麦园叶爪螨
Page 15 and 16: 1. Common Species ‣ Tetranychus t
Page 17 and 18: 2. Distribution Cereal Crop Mites D
Page 19 and 20: Cereal Crop Mites Damage to maize,
Page 21 and 22: Cereal Crop Mites Damage to Wheat 1
Page 23 and 24: 2. Distrbution Cereal Crop Mites Da
Page 29 and 30: Cotton Spider Mites ( 棉叶螨 )
Page 37 and 38: Broad mite Polyphagotarsonemus latu
Page 40 and 41: 2. Bionomics • 25-30 generations/
Page 42 and 43: 2. Bionomics • Prefer warmth and
Page 44 and 45: • Fruit-tree tree spider mite Tet
Page 46 and 47: Two spotted spider mite Tetranychus
Page 48 and 49: 2. Life Cycle and Behavior • 3-13
Page 50 and 51: Two spotted spider mite Tetranychus
Page 54 and 55: Monitoring and Management 1. Survey

Cereal crop mites

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