Sitona lineata
Pest description and crop damage This is the common, large light-green aphid found on most legumes. Large populations weaken plants, secrete honeydew, and can reduce hay yield.
Management-chemical control
- zeta-cypermethrin (Mustang, Mustang Maxx) Mustang at 0.028 to 0.05 lb ai/A; Mustang Maxx at 0.014 to 0.025 lb ai/A. PHI 3 days cutting and grazing; 7 days for seed. REI 12 hr. Do not apply more than 0.05 lb ai per cutting or 0.15 lb ai per season of Mustang or 0.025 lb ai per cutting and 0.075 lb ai per season of Mustang Maxx. Retreatment interval: 7 days.
Management-cultural
- Planting early and maintaining crop rotations
- Trap crops like winter peas followed by spraying them with an insecticide to control the weevils before they move to the main crop
- Do not plant peas near clover, vetch, or alfalfa patches
- Remove volunteer host plants and debris after harvest
Management-biological
- Use beneficial nematodes, birds, ground beetles and spiders