Forages: Potato Leafhopper (Empoasca
fabae)
Pub 812: Field Crop Protection
Guide >
Chapter
3: Forages > Potato Leafhopper
Field Crop Protection Guide 2011-2012, Order
2011-2012 publication
Table of Contents
- Description
- Integrated Pest Management Options
- dimethoate – Cygon 480 EC, Lagon 480 EC
- cyhalothrin-lambda – Matador 120E, Silencer 120 EC
- Related links...
Description
Adults are pale-green, wedge-shaped, winged insects about 3 mm
long with piercing and sucking mouth parts. Adults are broadest
towards the head, the body tapering evenly to the wing tips. They
have a row of six rounded, white spots behind their head. Nymphs
are smaller than adults and are wingless.
Image 1. Potato leafhoppers are pale green, wedge-shaped, winged
insects. Immature nymphs are smaller and wingless.
Integrated Pest Management Options
Leafhopper damage is most severe in new seedings and during regrowth
after cutting, particularly when the weather is hot and dry. Resistant
varieties that produce glandular hairs on the leaves and stems are
recommended for control. Use chemical control only if leafhoppers
exceed the threshold, as insecticides will also kill beneficial
insects, the natural enemies of alfalfa weevil and lygus bug.
See OMAFRA Publication 811, Agronomy Guide for Field Crops,
for threshold.
| Active Ingredient |
dimethoate |
| Trade Name |
Cygon 480 EC |
| Rate per hectare (product) |
425 mL per ha |
| Rate per acre (product) |
170 mL per ac |
| PHI* |
2 |
| Comments |
Ground and aerial application. Do not apply during bloom.
Maximum 2 applications/yr. |
| Active Ingredient |
dimethoate |
| Trade Name |
Lagon 480 EC |
| Rate per hectare (product) |
425 mL per ha |
| Rate per acre (product) |
170 mL per ac |
| PHI* |
2 |
| Comments |
Ground and aerial application. Do not apply during bloom.
Maximum 2 applications/yr. |
| Active ingredient |
cyhalothrin-lambda |
| Trade name |
Matador 120 E |
| Rate per hectare (product) |
83 mL per ha |
| Rate per acre (product) |
34 mL per ac |
| PHI* |
3 (livestock foraging) |
| Comments |
For use in alfalfa only. Ground and aerial
application. Allow 7 days between treatments. Alfalfa seed from
treated crop is not to be used for production of alfalfa sprouts
for human consumption. Maximum 3 applications/yr. Do not apply
more than 1 application by air. 24-hr re-entry period. |
| Active ingredient |
cyhalothrin-lambda |
| Trade name |
Silencer 120 EC |
| Rate per hectare (product) |
83 mL per ha |
| Rate per acre (product) |
34 mL per ac |
| PHI* |
3 (livestock foraging) |
| Comments |
For use in alfalfa only. Ground application only.
Allow 7 days between treatments. Alfalfa seed from treated crop
is not to be used for production of alfalfa sprouts for human
consumption. Maximum 3 applications/yr. Do not apply more than
1 application by air. 24-hr re-entry period. |
Related links...
