|
|
|
|
Eriophyes cynodoniensis Sayed |
|
| LIFE CYCLE:Eggs hatch in
2-3 days. At 75 F (23.9 C), adulthood is reached in 7-10 days.
Very tolerant of high summer temperatures. Prefer droughty conditions. FEEDING SYMPTOMS:Feed underneath leaf sheaths. Grass appears weak and off color in the spring and does not respond to fertilization or irrigation. Yellowing of leaf tips and twisting of foliage. Shortening of stem internodes, resulting in tufted or rosetted growth (witches broom effect). Toxic saliva is injected into stems to cause stunting. Damage is worse in hot dry weather, especially in spring and fall. |
MANAGEMENT: irrigation to
minimize drought stress. Chemical control: dicofol (KELTHANE), fluvalinate (MAVRIK), isazofos (TRIUMPH), chlorpyrifos (DURSBAN) |