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|
Carrot Rust Fly |
|
| ORDER: Diptera pests as larva (maggot in soil) |
|
|
identification: |
|
|
adult |
slender metallic-green fly |
|
larvae |
1/3-inch long wiry, legless straw-colored "worms" |
|
host plants: |
carrots [parsnips, celery, parsley, dill, caraway, coriander, fennel] |
|
symptoms: |
holes & tunnels
in roots rust-colored root rots wilting & stunting above ground |
|
biology: |
O/W as pupae in soil, larvae in roots |
| CONTROL OPTIONS |
|
|
physical: |
floating row covers over seed beds |
|
cultural: |
late-planting (after
mid-June) to avoid oviposition harvest by late September destroy culls eliminate alternate host plants rotate beds |
|
biocontrol: |
natural larval & pupal parasite |
|
least-toxics: |
predatory nematodes |
|
conventional insecticides: |
diazinon (5% granules) |
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of Agriculture and Life Sciences, University of Idaho.
All rights reserved.