Cereal Crop Mites Damage to maize,sorghum and millet 二斑叶螨 砂叶螨
截形叶螨 朱砂叶螨 二斑叶螨 Cereal Crop Mites Cereal Crop Mites Damage to maize, sorghum and millet Damage to maize, sorghum and millet
Cereal Crop Mites Damage to maize,sorghum and millet 2.Distribution Worldwide distribution. Nationwide distribution in China. Cause the most severe damage in Northern China
2. Distribution 2. Distribution Worldwide distribution. Worldwide distribution. Nationwide distribution in China. Nationwide distribution in China. Cause the most severe damage in Northern Cause the most severe damage in Northern China. China. Cereal Crop Mites Cereal Crop Mites Damage to maize, sorghum and millet Damage to maize, sorghum and millet
Cereal Crop Mites Damage to maize,sorghum and millet 3.Damage Polyphagous pests.Damage corn,sorghum, cotton and many vegetable crops belonging to Solanaceae and Leguminosae. ■ Suck sap of leaves to cause white and yellow spots Eventually sucking causes le 缩)， wither and die
3. Damage 3. Damage Polyphagous Polyphagous pests. Damage corn, sorghum, pests. Damage corn, sorghum, cotton and many vegetable crops belonging to cotton and many vegetable crops belonging to Solanaceae Solanaceae and Leguminosae Leguminosae. Suck sap of leaves to Suck sap of leaves to cause white and yellow spots; cause white and yellow spots; Eventually sucking causes Eventually sucking causes leaves to crimple ( leaves to crimple (皱 缩), wither and die. wither and die. Cereal Crop Mites Cereal Crop Mites Damage to maize, sorghum and millet Damage to maize, sorghum and millet
Cereal Crop Mites Damage to maize,sorghum and millet 4.Life Cycle 10-20 generations per year; Female adults overwinter in silk webs in all refuges outdoor. Overwintered adults begin to be active on alternative hosts in spring,e.g.weeds rather than crops and then move into cotton or corn fields from end of May to early June.They cause the most severe damage during mid-Jul. to late Aug.Number reduces after Sep
4. Life Cycle 4. Life Cycle 10 -20 generations per year; 20 generations per year; Female adults Female adults overwinter overwinter in silk webs in all in silk webs in all refuges outdoor. refuges outdoor. Overwintered Overwintered adults begin to be active on adults begin to be active on alternative hosts in spring, e.g. weeds rather alternative hosts in spring, e.g. weeds rather than crops and then move into cotton or corn than crops and then move into cotton or corn fields from end of May to early June. They fields from end of May to early June. They cause the most severe damage during mid cause the most severe damage during mid -Jul. to late Aug. Number reduces after Sep. to late Aug. Number reduces after Sep. Cereal Crop Mites Cereal Crop Mites Damage to maize, sorghum and millet Damage to maize, sorghum and millet