Canola
and Mustard: Flea Beetle (Phyllotreta cruciferae and Phyllotreta
striolata)
| Author: |
OMAFRA Staff
|
| Creation Date: |
04 July 2005
|
| Last Reviewed: |
28 July 2007
|
Excerpt from Chapter 7, Field Crop Protection Guide, Order
this publication
Table of Contents
- Description
- Integrated Pest Management Options
- Related links...
Description
There are two species of flea beetles that attack canola.
The striped flea beetle is approximately 1.5 mm long and has
two cream-coloured strips along its back. The crucifer flea beetle
is bluish-black, 1.5 mm long and does not have stripes. Flea beetles
jump when disturbed, hence their common name. The larvae are white,
approximately 3 mm in length and have brownish heads.
Image 1. Striped (left) and crucifer flea beetle adults. Flea beetle
injury can be severe during first three weeks after emergence.
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Integrated Pest Management Options
Hot, dry weather favours this pest. Fortunately, once the crop reaches
the 3-4 leaf stage, the plants are generally established and can compensate
for the feeding damage.
If beetle damage exceeds 50% of the cotyledon or leaf area, and
if the weather is warm and dry, a foliar insecticide may be needed.
Canola and mustard are a valuable honey source and are well used
by honeybees. Keep insecticide application to a minimum while crop
is in bloom.
Seed Treatment
imidacloprid – Gaucho 480 FL
| Active ingredient |
imidacloprid |
| Trade name |
Gaucho 480 FL |
| Rate (product) |
820-1,640 mL per 100 kg seed |
Comments
Not for use in hopper-box, planter-box, slurry-box, or other non-commercial
seed treatment application. Do not graze livestock on treated areas
for 4 weeks after planting. Mustard greens having Gaucho 480 FL seed
treatment must not be used for human consumption. Use higher rate
if flea beetle populations are high.
thiamethoxam + difenoconazole + metalaxyl
M + fludioxonil – Helix Xtra
| Active ingredient |
thiamethoxam + difenoconazole + metalxyl M + fludioxonil |
| Trade name |
Helix Xtra |
| Rate (product) |
1.5 L per 100 kg seed |
Comments
Not for use in hopper-box, planter-box, slurry-box, or other non-commercial
seed treatment application. Follow resistance management recommendations
as stated on label.
imidacloprid + carbaithiin + thiram
– Gaucho CS FL
| Active ingredient |
imidacloprid + carbaithiin + thiram |
| Trade name |
Gaucho CS FL |
| Rate (product) |
1.4 L per 100 kg seed |
Comments
Not for use in hopper-box, planter-box, slurry-box, or other non-commercial
seed treatment application. Do not graze livestock on treated areas
for 4 weeks after planting. Mustard having Gaucho CS seed treatment
must not be used for human consumption. Follow resistance management
recommendations as stated on label.
clothianidin + carbathiin + thiram
+ metalaxyl – Prosper FL
| Active ingredient |
clothianidin + carbathiin + thiram + metalaxyl |
| Trade name |
Prosper FL |
| Rate (product) |
1.25 L per 100 kg seed |
Comments
Not for use in hopper-box, planter-box, slurry-box, or other non-commercial
seed treatment application. 30 day plant back on cereal grains, grasses,
non-grass animal feeds, and soybean and dried beans is required. 1
year plant back interval is required for leafy, root and tuber vegetables.
Can be tank-mixed with Poncho 600 FS for longer season control of
flea beetles. Follow resistance management recommendations as stated
on label.
Postemergence
Canola is a valuable honey source and is utilized by honeybees. Bees
also pollinate the crop. If spraying an insecticide, ensure there
are no honey-producing hives in your area.
cypermethrin – Ripcord 400 EC
| Active ingredient |
cypermethrin |
| Trade name |
Ripcord 400 EC |
| Rate per hectare (product) |
50 mL per ha |
| Rate per acre (product)
|
20 mL per ac |
Comments
Ripcord is registered for use on canola only. Ground application
only. Apply when signs of insect damage appear. Repeat treatment if
necessary. Use minimum 110 L of water/ha. 30 days to harvest.
deltamethrin – Decis 5 EC
| Active ingredient |
deltamethrin |
| Trade name |
Decis 5 EC |
| Rate per hectare (product) |
100-150 mL per ha |
| Rate per acre (product)
|
40-60 mL per ac |
Comments
Ground or aerial application. 14 days to harvest.
cyhalothrin-lambda – Matador
120 EC
| Active ingredient |
cyhalothrin-lambda |
| Trade name |
Matador 120 EC |
| Rate per hectare (product) |
83 mL per ha |
| Rate per acre (product)
|
33 mL per ac |
Comments
Ground or aerial application. Maximum 3 applications per year,
1 may be by air. Tank-mixing with clay-based fungicides (e.g., Lance
or Ronalin) is not recommended as these fungicides may affect insecticide
efficacy. Do not apply within 7 days of harvest.
carbaryl – Sevin XLR Plus
| Active ingredient |
carbaryl |
| Trade name |
Sevin XLR Plus |
| Rate per hectare (product) |
500 mL per ha |
| Rate per acre (product)
|
200 mL per ac |
Comments
Seedling stage only (up to 4 weeks after plant emergance). Ground
and aerial application. 60 days to harvest.
carbofuran – Furadan 480 F
| Active ingredient |
carbofuran |
| Trade name |
Furadan 480 F |
| Rate per hectare (product) |
150 mL per ha |
| Rate per acre (product)
|
60 mL per ac |
Comments
Apply 2 weeks after seeding or when insects are first noticed.
Ground and aerial application. Do not use less than 100 L of water.
60 days to harvest for canola and 21 days to harvest or grazing on
mustard. Minimum period for re-entry is 48 hrs.
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Related links...
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