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Decis Prairies Insecticide Bayer CropScience

Decis Prairies

Overview


Decis® provides fast, effective control of a wide range of insects, including grasshoppers.

  • Controls a variety of insects in many crops
  • Particularly effective on lepidopteran insects (flea beetle, diamondback moth, Bertha armyworm, cutworm and grasshopper)
  • Fast-acting control
  • Easy-to-use liquid formulation; pours and mixes easily
  • Low application rates, less product to handle and fewer containers to dispose of
  • Registered for both ground and aerial application
  • Short pre-harvest interval
  • Safe on crops, regardless of a plant's development stage
  • Tank-mixable with many leading herbicides
  • Wide temperature range, unlike many insecticides, Decis provides excellent control even at low temperatures

Product Summary

Insecticide

Product Type

  • Insecticide
Crops

Crops

Pests Controlled

Pests Controlled

Pests Supressed

Pests Suppressed

Groups and Active Ingredients

Groups and Active Ingredients

  • Deltamethrin - Group 3
Formulation Type

Formulation Type

  • Emulsifiable Concentrate
Packaging

Packaging

  • Decis 100 EC - 1.2L Jug (100 g/L)
  • Decis 100 EC - 4.8L Jug (100 g/L)
  • Decis 5 EC - 2.4 L Jug (50 g/L)
  • Decis 5 EC - 9.6 L Jug (50 g/L)

Active Ingredients

Deltamethrin

Resistance Management

Alternate the use of Decis with other insecticides having a different mode of action

Crops

Barley
Canola
Flax
Lentils
Oats
Oriental mustard
Wheat

Pests Controlled

Beet webworm
Bertha armyworm
Cabbage seedpod weevil
Clover cutworm
Cutworm
Diamondback moth
Flea beetle
Grasshopper
Lygus bug
Weevil

Registered Tank Mixes

Puma120 Super
Buctril M
2, 4-D
MCPA

Province of Registration

Alberta
British Columbia
Manitoba
Saskatchewan

Application Tips


Timing
Decis is a contact insecticide. For best results, spray when insects are actively feeding.
Decis is one of the safest insecticides on beneficial insects, if spraying is required when bees are present, apply in the evening when bee foraging is minimized. To further minimize exposure to pollinators, refer to the complete guidance “Protecting Pollinators during Pesticide Spraying – Best Management Practices” on the Health Canada website (www.canada.ca/pollinators)
Application Method: Ground or aerial
Water Volumes:
Ground: Min. 10 gal./acre
Air: Min 2 gal./acre

 

Crop Insect      Rate Decis 5EC
(50 g/L)
Rate
Decis 100 EC
(100 g/L)
Decis 5 EC
Acres/ 2.4 L
Jug
Decis 100 EC
Acres/ 1.2 L
Jug
                    
Canola, Mustard, Flax Bertha Armyworm Aerial: Apply by air only when larvae are present. Apply when insects are actively feeding. For heavy infestations, use the higher rate. 60 mL/ac. 30 mL/ac. 40 40
Canola, Mustard, Flax Cabbage Seedpod Weevil For control of adult weevil only. Apply when adults are seen on flower buds or developing pods. Must apply prior to egg laying. Consult extension experts for economic threshold. 80 mL/ac. 40 mL/ac. 30 30
Canola, Mustard, Flax Cutworms Apply when larvae are present and feeding. Do not disturb the soil after application. Under severe insect pressure, application should also be made to a 15-metre strip along fencerows around the field. Apply in sufficient water to ensure thorough coverage. 80 mL/ac. 40 mL/ac. 30 30
Canola, Mustard, Flax Clover Cutworm Apply when larvae are present and feeding. Do not disturb the soil after application. Apply in sufficient water to ensure thorough coverage. 60 mL/ac. 30 mL/ac. 40 40
Canola, Mustard, Flax Diamondback Moth Apply by air only when insects are actively feeding or when Provincial Letters recommend spraying. 60 mL/ac. 30 mL/ac. 40 40
Canola, Mustard, Flax Flea beetle Apply when insects are present. Decis Insecticide controls only those insects present. Application should be made when the beetles are actively feeding. Under severe pressure, application should also be made to a 15-metre strip along fence rows around the field. 60 mL/ac. 30 mL/ac. 40 40
Canola, Mustard, Flax Grasshopper Apply when signs of insect damage are evident and grasshoppers are in the 2-4 nymphal stage. Best control will be achieved when application is made prior to wing development. The higher rate should be used when the proportion of mature and late nymphal stages in the grasshopper population are high and spray penetration is inhibited by dense crop canopy. Under severe insect pressure application should also be made to a 15-metre strip along fence rows around the field. 60 mL/ac. 30 mL/ac. 40 40
Canola, Mustard, Flax Lygus Bugs Apply when lygus bugs are seen feeding on the buds, flowers and developing pods. Consult extension experts for economic threshold. 60 mL/ac. 30 mL/ac. 40 40
Canola, Mustard, Flax Swede Midge Begin applications when a significant population of adult midge are observed as determined by local monitoring. Under heavy pressure use the higher rate. Thorough coverage is important to obtain optimum efficacy. 60-80 ML/ac. 30-40 mL/ac. 30-40 30-40
Wheat, Barley, Oats Grasshopper GROUND Follow provincial forecast. Apply when insects are present as young hoppers or signs of insect damage are evident. Apply when the Grasshoppers are in the 2-4 nymphal stage. Best control will be achieved when application is made prior to wing development. Under severe insect pressure application should also be made to a 15-metre strip along fence rows around the field. DO NOT APPLY TO UNREGISTERED CROPS. The higher rate should be used when the proportion of mature and late nymphal stages in the population is high and spray penetration is inhibited by dense crop canopy. 60 mL/ac. in 10 gal. of water per acre 30 mL/ac. in 10 gal. of water per acre. 40 40
Wheat, Barley, Oats Grasshopper AERIAL Use as directed and follow special instructions for aerial application in Section 9. Do not make aerial application of tank-mix of Decis 100 EC Insecticide with Buctril M herbicide and Puma Advance herbicide. 60 mL/ac. in 1 - 2 gal. of water per acre 30 mL/ac in 1 - 2 gal. of water per acre 40 40
Wheat, Barley, Oats Cutworm GROUND OR AERIAL Apply when larvae are present and feeding. Do not disturb the soil after application. Under severe insect pressure, application should also be made to a 15-metre strip along fencerows around the field. DO NOT APPLY TO ADJACENT CROPS. 80 mL/ac. 40 mL/ac. 30 30
Lentil Grasshopper Apply when insects are present as young hoppers or signs of insect damage are evident. Apply when the Grasshoppers are in the 2-4 nymphal stage. Best control will be achieved when application is made prior to wing development. 60 mL/ac. 30 mL/ac. 40 40
Lentil Cutworms Apply when larvae are present and feeding. Do not disturb the soil after application. 80 mL/ac. 40 mL/ac. 30 30
Lentil Lygus Bug Apply when the insects are present at economic thresholds. 80 mL/ac. 40 mL/ac. 30 30

 

Economic Thresholds



  • It is important to protect the canola plant during its early stages of development as this is when most flea beetle damage occurs.
  • Scout your fields frequently and observe flea beetle densities and levels of damage to cotyledon, leaves and stem.
  • Canola seedlings can withstand 50% leaf loss. However, the economic oraction threshold for control is 25%. Beyond 25%, leaf damage can reach a level where plant development and yield are substantially reduced.
  • Spraying for flea beetles is recommended if the feeding damagee exceeds 25% of the seedling leaves, particularly in hot, dry weather.
  • If a foliar insecticide is required, Decis provides excellent control.

Canola seedlings with varying levels of flea beetle damage

a to f - first leaf stage; g to l - two leaf stage


Source: Ralph Underwood, AAFC Saskatoon


Application Tips



  • Scout your fields often to ensure proper application and timing
  • Scouting should take place when insects are actively feeding
  • Use sufficient water to ensure thorough coverage. More water may be required when dense foliage is present.

 

Pre-harvest intervals:

  • Canola - 7 days
  • Wheat and Barley – 40 day
  • Oats - 31 days
  • Lentils - 30 day
  • Flax 7 days

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