Management of Insect and Mite Pests in Canola
There are several arthropod pests that damage canola sporadically throughout the region. Pesticides should not be a substitute for good agronomic practices or as “preventative insurance” because it can cause pest resurgence issues and is rarely economically or environmentally justifiable. Many canola pest problems can be managed by following good cultural practices, such as selecting varieties that are adapted to Oklahoma growing conditions, planting at an optimal date and providing proper fertilization and good weed control.
The information herein is for educational purposes only. Reference to commercial products
or trade names is made with the understanding that no discrimination is intended and
no endorsement by the Cooperative Extension Service is implied.
Pesticide recommendations in this publication were correct as of the “Modified Date"
but always check the label that came with the purchased insecticide for the most current
rates and restrictions.
The first name listed is the trade name of a product registered for use in corn for
the listed pest. The name in (parentheses) listed below the trade name is the name
of the active ingredient. The active ingredient name is provided because in many cases,
there are other registered products containing the same active ingredient that may
cost less, so producers should compare prices.
The number [in brackets] following a product is its Mode of Action number [MOA]. The
more frequently insecticides with the same MOA are used, the more likely resistance
will occur. This number provides an easy way to select different modes of action to
avoid selecting for pests that are resistant to a certain mode of action.
Refer to the following publications for additional information on pest management
in canola.
BAE-1110 Storing Oklahoma Winter Canola
CR-2133 Crop and Forage Recordkeeping Software
CR-2144 2015-2016 Winter Canola Performance Trials
EPP-7085 Pest Management Needs Assessment for Oklahoma Canola Producers
EPP-7089 Caterpillars in Canola
EPP-7095 Sclerotinia Stem Rot of Canola
EPP-7196 Grasshopper Management in Rangeland, Pastures, and Crops
EPP-7671 Black Leg of Canola
PSS-2130 Managing Winter Canola in Oklahoma
PSS-2131 Winter Canola Planting Guide for the Southern Great Plains
PSS-2150 Winter Canola Cultivar Comparison Chart
An additional source of information is MF-2734, “Great Plains Canola Production Handbook”, is a joint publication of Kansas State University, Oklahoma State University and the University of Nebraska. It is available by contacting the following website: www.oznet.ksu.edu
Management of Insect and Mite Pests in Canola
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comments |
|---|---|---|---|
| Aphids | Planting Time | Research data indicates that aphids are a consistent pest of winter canola in fall and winter. The use of seed treatments is highly recommended for early-season management of aphids. Additional foliar insecticide applications may be necessary for late-season control of aphids. Green peach aphid is known to have resistance to pyrethroid [MOA group 3] insecticides. Products that contain these active ingredients that are bundled with fungicides are available. | |
| Cabbage aphid: small blue-gray aphid with short cornicles, and is usually covered with a powdery wax secretion. | Gaucho 600 [4A] (imidacloprid) | 10.24 to 25.6 fl oz/ cwt seed | |
| Green peach aphid: Pale green to yellow (sometimes pink) with long cornicles and three dark lines on the abdomen. | Helix EXtra [4A] (thiamethoxam) | 23 fl oz/cwt seed | |
| Turnip aphid: Pale gray green with short, swollen cornicles, 1/16-inch long. Winged adults can be recognized by presence of transverse dark bands on last two abdominal segments. | Post-Plant | ||
| Damage: High populations can cause stunting and discoloration of leaves. Feeding by cabbage aphid can stop terminal growth and reduce yield. Damage is of little consequence after pod formation is completed. |
Azadirachtin [UN] | 1 pt. | No PHI for harvest (Aza-direct, Ecozin). |
| Threshold Treat rosette stage plants only when aphids exceed 100 to 200 per plant. Treat bud and early bloom stage when infested plants (racemes) exceed 15%. Don’t treat at late flower or pod stage. |
Besiege [28,3](chlorantraniliprole + lambda-cyhalothrin) | 10 fl oz. | Label for cabbage aphid only; 21-day PHI. |
| Brigade 2EC [3](bifenthrin) | 2.1 to 2.6 fl oz (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Annex, Bifenture, Discipline, Empower, Fanfare, Sniper) | |
| Carbine 50 WG [29](flonicamid) | 2.8 oz.(0.089 lb. ai) | 7-day PHI, Apply before aphids reach high levels (Beleaf is also registered for rapeseed) |
|
| Grandevo (Chromobacterium substsugae) |
2 to 3 lb./A | 0-day PHI | |
| Hero [3] (zeta-cypermethrin + bifenthrin) | 4.0 to 5.5 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients) | |
| Karate/Warrior II [3] (lambda-cyhalothrin) |
1.92 fl oz.(0.03 lb. ai) | 7-day PHI for harvest or grazing. | |
| Hero EW [3] (zeta-cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz (0.04 to 0.053 lb ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients) | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz (0.025 lb ai/A) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) |
3.84 fl oz (0.015 lb. ai) | 7-day PHI for harvest or grazing. | |
| Transform WG [4C] (sulfoxaflor) |
0.5 to 0.75 oz (0.016 to 0.023 lb ai/A) | 7-day PHI. Must apply only after petal fall. |
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comments |
|---|---|---|---|
| Army cutworm | |||
| Gray striped caterpillar that curls up in to a tight “C” when disturbed. Evident from January through March. | Brigade 2EC [3](bifenthrin) | 2.1 to 2.6 fl oz (0.033 to 0.04 lb. ai) | |
| Damage: Cuts plants at soil line, can kill plants if it eats the growing point. | Fortenza [28](cyantraniliprole) | 7.7 fl oz/cwt seed | Seed treatment. |
| Hero EW [3] (zeta cypermethrin + bifenthrin) | 2.8 to 5.95 fl oz.(0.025 to 0.053 lb. ai) | 35-day PHI for harvest. (other names: Annex, Bifenture, Discipline, Empower, Fanfare, Sniper) | |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing. | |
| Lumiderm [28] (cyantraniliprole) |
3.7 to 24.6 fl oz/cwt (0.15 to 1.0 lb.) | Seed treatment. | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) |
1.92 to 3.84 fl oz. (0.0075 to 0.015 lb ai/A) | 7-day PHI for harvest or grazing. | |
| Beet/Fall Armyworm | |||
| Beet armyworm: Green caterpillar, darker above with a white stripe along the side of the body and a small black spot above the second pair of true legs, three pairs of true (thoracic legs) and four pair of abdominal prolegs. | Azadirachtin [UN] | Apply per label. | No PHI for harvest (Aza-direct, Ecozin). |
| Fall armyworm: Brown, green, or largely black striped caterpillar, up to 1.5 inches, with a light-colored inverted “Y” on head. | B. thuringiensis [11] | Apply per label. | No PHI for harvest (Dipel. Javelin, Leipnox, Xentari). |
| Brigade 2EC [3](bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Bifenture, Discipline, Empower, Fanfare, Sniper, Tailgunner, Tundra) | |
| Confirm 2F [18](tebufenozide) | 8 to 16 fl oz. (0.12 to 0.25 lb. ai) | 14-day PHI. | |
| Delta Gold 1.5 EC [3] (deltamethrin) |
0.8 fl oz. (0.009 lb. ai) | 7-day PHI. | |
| Grandevo (Chromobacterium substsugae) | 1 to 3 lb./A | 0 Day PHI. | |
| Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). | |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Prevathon [28] (chlorantraniliprole) |
14 to 20 fl oz. (0.047-0.067 lb. ai) | 1-day PHI. While beet/fall armyworms are not specifically listed on the label, Coragen and Prevathon is labeled for use in canola, and can be applied under the 2ee label at the listed rate, which is labeled for beet/fall armyworm on other crops. However, since these pests are not specifically named in canola recommendations, the user assumes all responsibility for the application and results. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) | 1.92 to 3.84 fl oz.(0.0075 to 0.015 lb. ai) | 7 Day PHI for harvest or grazing. |
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comments |
|---|---|---|---|
| Cabbage looper | |||
| Green caterpillar, with a thin white line along each side of the body, three pairs of thoracic legs and three pair of abdominal prolegs. | Azadirachtin [UN] | Apply per label. | No PHI for harvest. |
| B. thuringiensis [11A] | Apply per label. | No PHI for harvest. | |
| Besiege [28,3](chlorantraniliprole + lambda-cyhalothrin) | 5.0 to 10.0 fl oz. | 21-day PHI. | |
| Brigade 2EC [3](bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Annex, Bifenture, Discipline, Empower, Fanfare, Sniper) | |
| Exirel [28] (cyantraniliprole) | 10 to 20.5 fl oz (0.065 to 0.133 lb. ai) | 7-day PHI for harvest, label recommends using an adjuvant. | |
| Grandevo (Chromobacterium substsugae) | 1 to 3 lb./A | 0-day PHI. | |
| Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). | |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) | 1.92 to 3.84 fl oz.(0.0075 to 0.015 lb. ai) | 7-day PHI for harvest or grazing. |
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comments |
|---|---|---|---|
| Diamondback moth | Diamondback moth is known for developing resistance to many insecticides, especially pyrethroids (Class3 MOA), therefore thorough field scouting and class rotation of insecticides is encouraged. | ||
| Azadirachtin [UN] | Apply per label. | No PHI for harvest (Aza-direct, Ecozin). | |
| B. thuringiensis [11] | Apply per label. | No PHI for harvest (Dipel. Javelin, Leipnox, Xentari). | |
| Brigade 2EC [3] (bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Bifenture, Discipline, Empower, Fanfare, Sniper, Tailgunner, Tundra) | |
| Coragen [28] (chlorantraniliprole) | 3.5 to 7.5 fl oz. (0.045 to 0.098 lb. ai) | 1-day PHI for harvest. | |
| Delta Gold 1.5 EC [3] (deltamethrin) | 0.8 fl oz. (0.009 lb. ai) | 7-day PHI. | |
| Exirel [28] (cyantraniliprole) | 10 to 20.5 fl oz (0.065 to 0.133 lb. ai) | 7-day PHI for harvest, label recommends using an adjuvant. | |
| Grandevo (Chromobacterium substsugae) | 1 to 3 lb./A | 0 Day PHI. | |
| Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). | |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Prevathon [28] (chlorantraniliprole) |
14 to 20 fl oz. (0.047-0.067 lb. ai) | 21-day PHI. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) | 1.92 to 3.84 fl oz.(0.0075 to 0.015 lb. ai) | 7 Day PHI for harvest or grazing. |
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comments |
|---|---|---|---|
| False chinch bug | False chinch bugs thrive in hot, dry conditions which makes it more difficult to control them. They are not specifically named on these labels, but can be used at the rates listed. For best results, use highest levels of water carrier for thorough coverage. | ||
| Adults 1/8 inch, long dirty gray, with brown or black markings, piercing mouthparts. | Azadirachtin [UN] | Apply per label. | No PHI for harvest. |
| Damage: Feed in groups. Large numbers may cause wilting of heads or small plants. | Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). |
| Threshold: Flowering: Treat when there is an AVERAGE of 20 to 30 per head. |
Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. |
| Early seed pod: Treat when there is an AVERAGE of 40 to 50 per head. | Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). |
| Flea beetle | Planting Time | ||
| Shiny black beetle about 1/16-inch long, jumps when disturbed. |
DynaShield [4A] (imidacloprid) | 10.24 to 25.6 fl oz./ cwt seed | Harvested seed can only be used for industrial purposes, not for edible oil. |
| Damage: Early spring. Feeding damage results in plant tissue that is scraped from leaf and/or small holes chewed in leaves. Can cause delayed development in cool growing conditions. | Fortenza [28](cyantraniliprole) | 20.4 fl oz/ cwt seed | Check labels of seed treatments for crop rotation restrictions. They range from 0 days to 12 months, depending on the insecticide and crop. |
| Threshold: No threshold has been established. | Helix EXtra [4A](thiamethoxam) | 23 fl oz./ cwt seed | |
| Poncho [4A] (clothianidin) | 3.84 to 10.23 fl oz./ cwt seed | ||
| Lumiderm [28] (cyantraniliprole) |
14.8 to 24.6 fl oz/cwt seed | ||
| Post-Plant | |||
| Azadirachtin [UN] | Apply per label. | No PHI for harvest. | |
| Brigade 2EC [3] (bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Bifenture, Discipline, Empower, Fanfare, Sniper, Tailgunner, Tundra) | |
| Delta Gold 1.5 EC [3](deltamethrin) | 0.8 fl oz. (0.009 lb. ai) | 7-day PHI. | |
| Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). | |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) | 1.92 to 3.84 fl oz.(0.0075 to 0.015 lb. ai) | 7-day PHI for harvest or grazing. |
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comment |
|---|---|---|---|
| Harlequin bug | |||
| Black shield-shaped with orange, red and yellow markings. Measures 3/8-inch long. Eggs barrel-shaped and laid in clusters. | Azadirachtin (un) | Apply per label. | No PHI for harvest. |
| Damage: Adults and nymphs pierce stalks, leaves with sucking mouthparts. | Brigade 2EC [3] (bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Bifenture, Discipline, Empower, Fanfare, Sniper, Tailgunner, Tundra) |
| Threshold: No threshold has been established. | Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Wireworm | Planting Time | May plant field immediately with corn, or canola. 30 post-harvest waiting period for cereal grains, grasses soybeans and dried beans. Four-month waiting period for all other crops. | |
| Hard-shelled, smooth, cylindrical, yellowish to brown worms. Two- to six-year life cycle. | DynaShield [4A] (imidacloprid) | 10.24 to 25.6 fl oz./ cwt seed | Do not use treated seed for feed, food or oil purposes. |
| Damage: Feed on seed, seedling. Cause stand loss. | Helix EXtra [4A](thiamethoxam) | 23 fl oz/cwt seed | Harvested seed can only be used for industrial purposes, not for edible oil. |
| Threshold: Seed treatments are registered for protection against early season damage. Treat if field history indicates a problem. | Poncho [4A] (clothianidin) | 3.84 to 10.23 fl oz./ cwt seed | 30 post-harvest waiting period for planting all crops except winter wheat. |
Pre-harvest Intervals and grazing restrictions
| Azadirachtin (neem) | 0-day PHI for harvest |
|---|---|
| Bacillus thuringiensis | 0-day PHI for harvest |
| Besiege | 21-day PHI |
| Brigade | 35-day PHI for harvest. |
| Carbine | 7-day PHI for harvest |
| Coragen | 1-day PHI for harvest |
| Delta Gold | 7-day PHI for harvest |
| DynaShield | Harvested seed can only be used for industrial purposes, not for edible oil. |
| Exirel | 7-day PHI for harvest |
| Grandivo | 0-day PHI |
| Hero EW | 35-day PHI for harvest. |
| Helix EXtra | No PHI listed. Do not graze |
| Karate/Warrior | 30-day PHI for harvest or grazing |
| Lumiderm | |
| Mustang MAXX | 7-day PHI for harvest |
| Prevathon | 21-day PHI |
| Prosper FX | No PHI listed |
| Proaxis | 7 Day PHI for harvest or grazing |
* Group numbers in brackets [#] after the insecticide name are used to designate the mode of action of the insecticide according to the classification system developed by the Insecticide Resistance Action Committee, (IRAC) in 2011. It is intended to help in the selection of insecticides for preventative resistance management. If you make multiple applications for a specific pest during a growing season, simply select a registered insecticide with a different number for each application. To further delay resistance from developing, integrate other control methods into your pest management programs
The pesticide information presented in this publication was current with federal and state regulations at the time of revision. READ and FOLLOW all LABEL directions.
| Pest, Damage and Treatment Threshold | Insecticide, Formulation, [MOA Group] and (Active Ingredient) | Rate of Product and (lb active ingredient) per Acre | Comments |
|---|---|---|---|
| Grasshopper | |||
| 1-2 inches, outer wings leathery, inner wings clear or colored. Enlarged hind legs designed for jumping. | Besiege [28,3] (chlorantraniliprole + lambda-cyhalothrin) |
5 to 10 fl oz. | 21-day PHI. |
| Damage: Chew leaves. Leaves may have ragged edges or leaf blade may be completely chewed. Small plants may be killed. | Brigade 2EC [3] (bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Annex, Bifenture, Discipline, Empower, Fanfare, Sniper) |
| Threshold: 15-20 per square yard. If nymph populations exceed threshold field borders (25 to 40 per square yard), treat before they move into canola. | Coragen [28] (chlorantraniliprole) | 3.5 to 7.5 fl oz. (0.045 to 0.098 lb. ai) | 1-day PHI. |
| See EPP-7196: Grasshopper Management in Rangeland, Pastures, and Crops | Delta Gold 1.5 EC [3] (deltamethrin) | 0.8 fl oz. (0.009 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. |
| Hero EW [3] (zeta cypermethrin + bifenthrin) | 4.5 to 5.95 fl oz. (0.04 to 0.053 lb. ai) | 35-day PHI for harvest (Steed is another mixture of the same active ingredients). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) | 1.92 to 3.84 fl oz.(0.0075 to 0.015 lb. ai) | 7-day PHI for harvest or grazing. | |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Lygus bug | |||
| Several species. Generally oval, about ¼-inch long, brown with some yellow or reddish markings. |
Azadirachtin (UN) | Apply per label. | No PHI for harvest (Aza-direct, Ecozin). |
| Damage: Feed on developing seeds, flowers, and leaves. Feed on buds. Thresholds are for infestations before or during petal fall. |
Brigade 2EC [3] (bifenthrin) | 2.1 to 2.6 fl oz. (0.033 to 0.04 lb. ai) | 35-day PHI for harvest. (other names: Annex, Bifenture, Discipline, Empower, Fanfare, Sniper) |
| Threshold: North Dakota thresholds are 15 per 10 sweeps before petal fall, and 20 per 10 sweeps after petal fall. |
Delta Gold 1.5 EC [3] (deltamethrin) | 0.8 fl oz. (0.009 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. |
| Karate/Warrior II [3] (lambda-cyhalothrin) | 0.96 to 1.92 fl oz. (0.015 to 0.03 lb. ai) | 7-day PHI for harvest or grazing (other names: Karate, Grizzly Z, Lambda Cy, Lamcap, Paradigm, Province, Silencer). | |
| Mustang MAXX EC [3] (zeta-cypermethrin) | 4.0 fl oz. (0.025 lb. ai) | 7-day PHI for harvest. Do not make applications less than seven days apart. | |
| Proaxis 0.5 CS [3] (gamma-cyhalothrin) | 1.92 to 3.84 fl oz.(0.0075 to 0.015 lb. ai) | 7 Day PHI for harvest or grazing. | |
| White grub | Planting Time | Do not use treated seed for feed, food or oil purposes. | |
| Large, “C” shaped grub with a white body and a brown head. | DynaShield [4A] (imidacloprid) | 10.24 to 25.6 fl oz./ cwt seed | Harvested seed can only be used for industrial purposes, not for edible oil. |
| Helix EXtra [4A](thiamethoxam) | 23 fl oz/cwt seed | 30 post-harvest waiting period for planting all crops except winter wheat. | |
| Poncho [4A] (clothianidin) | 3.84 to 10.23 fl oz./ cwt seed | 30 post-harvest waiting period for planting all crops except corn. |
The pesticide information presented in this publication was current with federal and state regulations at the time of printing. The user is responsible for determining that the intended use is consistent with the label of the product being used. Use pesticides safely. Read and follow label directions. The information given herein is for educational purposes only. Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by the Cooperative Extension Service is implied.
Tom A. Royer
Extension Entomologist
Kristopher Giles
Professor and Research Entomologist