Forages: Alfalfa Blotch Leafminer
(Agromyza frontella)
Pub 812: Field Crop Protection
Guide >
Chapter
3: Forages > Alfalfa Blotch Leafminer
Field Crop Protection Guide 2011-2012, Order
2011-2012 publication
Table of Contents
- Description
- Integrated Pest Management Options
- dimethoate – Cygon 480 E, Lagon 480 E
- phosmet – Imidan 50 WP
- Related links...
Description
The adult is a very small, black, hump-backed fly. The larvae are
small, pale yellow maggots found within tunnels in the leaf tissue.
Integrated Pest Management Options
Natural enemies are highly effective at controlling this pest.
For the safety of these natural enemies, chemical control is not
recommended unless pest population exceeds the action threshold.
See OMAFRA Publication 811, Agronomy Guide for Field Crops,
for more information
| Active ingredient |
dimethoate |
| Trade name |
Cygon 480 E |
| Rate per hectare (product) |
550 mL per ha |
| Rate per acre (product) |
220 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 E |
| Rate per hectare (product) |
550 mL per ha |
| Rate per acre (product) |
220 mL per ac |
| PHI* |
2 |
| Comments |
Ground and aerial application. Do not apply during bloom.
Maximum 2 applications/yr. |
| Active ingredient |
phosmet |
| Trade name |
Imidan 50 WP |
| Rate per hectare (product) |
2.25 kg per ha |
| Rate per acre (product) |
900 g per ac |
| PHI* |
7 |
| Comments |
For us in alfalfa only. Ground application
only. Do not apply during bloom. Maximum 3 applications/yr.
Do not apply more than 1 application per cutting. 5-day re-entry
period. |
Related links...
