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May 27, 2024

Josh Mosiondz, provincial minor use coordinator, OMAFRA, is reporting that the CimegraInsecticide label has been temporarily expanded via Emergency Use Registration to help manage cabbage maggot in broccoli, Brussels sprouts, cabbage, cabbage (Chinese, napa), and cauliflower grown in in Ontario, Alberta, Saskatchewan, Québec, Nova Scotia, New Brunswick, Prince Edward Island, and Newfoundland and Labrador. The use period is from May 17, 2024 until December 31, 2024.

 

Cimegrainsecticide is labeled for management of insects on a wide range of crops in Canada. Plans are underway to submit provincial User Requested Minor Use Label Expansion (URMULE) request with the hope for full registration on these crops in future field seasons. These EUR requests were initiated by participating provinces in response to the loss of chlorpyrifos applications in Canada following RVD2020-14 and the subsequent re-evaluation note REV2021-04 which created a lack of sufficient registered protective products to allow for effective protection from cabbage maggot on several crops in Canada, including those in this request. This EUR was led by Saskatchewan in conjunction with other participating province’s provincial Ministries of Agriculture and their local growers’ associations.

 

The following is provided as an abbreviated, general outline only. Users should be making insect management decisions within a robust integrated insect management program and should consult the complete emergency use label before using Cimegra insecticide.

 

Crop(s)

Target

Rate (mL product/ha)

Application Information

Pre-Harvest Interval (PHI) (days)

Broccoli, Brussels Sprouts, Cabbage, Cabbage (Chinese, napa), and Cauliflower

Cabbage maggot

187.5 – 250

Apply 187.5 – 250 mL/ha1of Cimegra insecticide post-planting as a drench banded spray, 10 cm on each side of the plant targeting the soil and base of plant to control cabbage maggot. For

best results apply at peak egg laying. Use a minimum water volume of 1000 L/ha. DO NOT apply more than 2 applications per year. Allow a minimum of 10 days between applications. Monitor pest population and reapply if necessary once thresholds are reached. Optimum application timing is based on field scouting. Begin applications when adult activity is observed in or near the field.

 

1 1.9 mL/100 m of row for 76 cm (30”) row spacing. For a different row spacing, adjust the

product rate using the following equation: (row spacing (cm) / 90) x 2.3 mL = mL per 100 m of

row.

1

 

 

NOTE: The use of Cimegra on broccoli, Brussels sprouts, cabbage, cabbage (Chinese, napa), and cauliflower is intended only for domestic markets due to a lack of export MRLs being established in other trading partner countries. If exported, detection of residues on these crops could lead to rejection or destruction by the appropriate officials.

 

For a copy of the emergency use label, Ontario growers may contact Josh Mosiondz, provincial minor use coordinator, OMAFRA, Guelph (226) 971-3407, Hannah Fraser – horticulture entomologist, OMAFRA, Guelph (905) 708-8014, or Travis Cranmer, vegetable crops specialist, OMAFRA, Guelph (519) 835-3382. Non-Ontario growers from participating provinces may contact their local provincial minor use coordinator or provincial crop specialist(s).  Alternatively, you may contact your regional supply outlet, BASF Canada (Cimegra) representative, or visit the PMRA label site

 

 Source: Josh Mosiondz, OMAFRA.

 

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Submitted by Karen Davidson on 27 May 2024