CIMEGRA Insecticide label expanded via Minor Use Program to help manage cabbage maggot in Brassica Head and Stem Vegetables in Canada

J. MOSIONDZ, OMAFA, Minor Use Coordinator, Guelph

The Pesticides Regulatory Directorate (PRD), formerly known as the Pest Management Regulatory Agency (PMRA), recently announced the approval of a minor use label expansion for Cimegra^® insecticide for management of cabbage maggot on CG 5-13 Brassica head and stem vegetables (broccoli, Brussels sprouts, cabbage, cabbage (Chinese, napa), and cauliflower) in Canada. Cimegra^® insecticide was already labelled for management of insects on a wide range of crops in Canada. This minor use proposal was submitted by the Saskatchewan Ministry of Agriculture as a result of minor use priorities established by growers and extension personnel across Canada, and in response to several years of Emergency Use Registration requests.

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 label before using Cimegra^® insecticide.

Crop(s)	Target	Rate (mL product/ha)	Application Information	Pre-Harvest Interval (PHI) (days)
CG 5-13 Brassica Head and Stem Vegetables (Broccoli, Brussels sprouts, Cabbage, Cabbage (Chinese, napa), and Cauliflower)	Control of cabbage maggot	250 mL/ha  or 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.	Apply 250 mL/ha* of 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. Allow a minimum of 10 days between applications. Monitor pest population and reapply if necessary once thresholds are reached. DO NOT apply more than 2 applications per year. DO NOT apply more than 50 g active ingredient per hectare per year total.  This includes all application types (i.e., seed treatment, soil and foliar). Toxic to bees.	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.

Toxic to bees. Bees may be exposed through direct spray, spray drift, and residues on leaves, pollen and nectar in flowering crops and weeds. Minimize spray drift to reduce harmful effects on bees in habitats close to the application site. Avoid applications when bees are foraging in the treatment area in ground cover containing blooming weeds. 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).  Follow crop specific directions for application timing. Toxic to aquatic organisms. Observe spray buffer zones and vegetative filter strips specified under DIRECTIONS FOR USE. To reduce runoff from treated areas into aquatic habitats, avoid application to areas with a moderate to steep slope, compacted soil, or clay. Avoid application when heavy rain is forecast. To reduce risk to aquatic organisms from runoff, a vegetative filter strip of at least 10 metres wide between the field edge and adjacent, downhill aquatic habitats must be observed, as specified under DIRECTIONS FOR USE. Toxic to certain beneficial arthropods (which may include predatory and parasitic insects, spiders, and mites). Minimize spray drift to reduce harmful effects on beneficial arthropods in habitats next to the application site such as hedgerows and woodland. Care should be taken when using this product in an integrated pest management program where users are relying on the presence of beneficial arthropods.

Follow all other precautions, restrictions, and directions for use on the Cimegra^® insecticide label.

For a copy of the new minor use label contact your local crops specialist, local regional supply outlet, or visit the PMRA label site http://www.hc-sc.gc.ca/cps-spc/pest/registrant-titulaire/tools-outils/label-etiq-eng.php

Note:  This article is not intended to be an endorsement or recommendation for this particular product, but rather a notice of registration activity