Turf Line News

September 2012

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Page 15 of 47

INDUSTRY NEWS PMRA RELEASES RE-EVALUATION RESULTS SUMMARY VIA PMRA As described in REV2000-04, the PMRA is undertaking a priority re- evaluation of the lawn and turf uses of the eight most commonly available lawn pesticides. In some cases, the evaluation of lawn uses is complete and/or mitigation has been implemented. Here is the decision or proposed decision summary of products used in turf management (beyond the most common eight) at May 31, 2012: BENSULIDE (HERBICIDE) Final Decision completed 03/08/2004: Acceptable for continued registration. Mitigation includes measures to further mitigate worker risks from turf use (prohibit backpack sprayer for turf uses, prohibit treatment of large turf areas, such as parks, with the exception of golf courses, limit golf course use to tees and greens and prohibit low pressure turf gun application for this use); mitigate residential risks (all bensulide formulations must be watered in); restrict agricultural use to field cucumbers only and add a plantback interval of 120 days; further measures to mitigate risk to the environment with the addition of buffer zones and prohibition to spray when bees are present. CARBARYL LAWN AND TURF (INSECTICIDE) Lawn & Turf Re-evaluation of turf uses is proceeding at same time as non-turf assessments. Proposed Decision 10/08/2009: The PMRA is proposing continued registrations for certain uses of carbaryl. For continuing uses, proposed mitigation is to include new/revised label statements to protect workers and the environment (including water soluble packaging, additional PPE, restriction in the number of applications, increased application intervals, REI, spray buffer zones and additional advisory statements). Certain uses of carbaryl are not supported by the technical registrant: indoor uses including greenhouses, residences, food and feed handling establishments and barns and livestock production areas; aerosol products; agricultural dust uses; bran bait application to residential gardens; livestock for food; livestock for non- food; companion animals; granular bait products for ornamental gardens; and applications by hand, spoon and bellygrinder. Other uses of carbaryl are proposed for phase-out: turf, golf courses and sod farms, residential ornamentals, fruit trees and vegetable gardens, tobacco and pick-your-own orchard operations. CARBATHIIN (FUNGICIDE) Final Decision completed 18/06/2009: Acceptable for continued registration for products containing carbathiin (as a seed treatment) and oxycarboxin (for control of rust on ornamentals grown in enclosed commercial structures). Mitigation for carbathiin includes revised label statements to further protect workers and the environment (including PPE, environmental hazards and other advisory label statements). An REI of 12 hours is required for oxycarboxin. Carbathiin products registered for use as a tree seedling treatment, outdoor ornamentals and residential plantscapes treatment are no longer supported by the registrant and will be discontinued. Carbathiin and oxycarboxin products registered in Canada for use as a turf treatment are no longer supported by the registrant and will be discontinued. CHLORPYRIFOS LAWN & TURF (INSECTICIDE) Lawn & Turf Re-evaluation of lawn and turf uses was completed in Phase I. Phase 1: Phase-out of all Domestic Class products with the exception of containerized low-concentration ant baits. Removal of residential uses, both indoor and outdoor (including all public areas such as schools, playgrounds and restaurants), from Commercial Class products. Uses inside and outside commercial buildings including warehouses, railroad boxcars and industrial plants are retained. Reduction of maximum application rate to sod farms and golf courses to 1 kg/ha. Phase-out of use on tomatoes and an MRL of zero being established to prevent the import of chlorpyrifos-treated tomatoes; lower MRLs for apples and grapes for import purposes (no apple or grape use in Canada); addition of REIs to labels for agricultural workers entering treated areas; phase-out after 2005 of certain product use patterns for controlling termites. 16 WESTERN CANADA TURFGRASS ASSOCIATION Phase 2: Proposed Measures: Discontinuation of uses on corn, filberts, lentils, oats, peppers, sugar beets and tobacco. Discontinuation of uses on peaches and nectarines in 2006 with interim mitigation for workers and the environment. Additional mitigation measures required for certain uses including canola, barley, carrot, flax, potato, wheat, strawberry, radish, Asian radish, celery, cucumber, cole crops, garlic, sunflower seeds and rutabaga. Mitigation measures include a reduction of the number of applications per season, restrict aerial application to wheat and canola only, buffer zones to protect aquatic ecosystems, implementation of engineering controls and PPE for workers, establishment of REIs for postapplication workers. Mitigation Measures: The PMRA has reviewed comments received in response to PACR2003-03. Based on the review of currently available information and the comments received, the PMRA is requiring that interim mitigation measures be implemented. To further protect workers, paintbrush applications for indoor uses have been discontinued, use of high-pressure handwand equipment has been discontinued, engineering controls and/or additional PPE will be required. Also, postapplication workers must observe established REIs. To further protect the environment, buffer zones have been established and precautionary statements regarding hazards to bees must be added to the labels of all products with agricultural uses. The maximum number of applications permitted per season per crop has also been limited. Decision: Some uses proposed for discontinuation in PACR2003-03 will be maintained for a variety of reasons relating to the value of the product. Continuing registration of use on peaches/nectarines, use as a mosquito larvicide and aerial uses are acceptable in the short term. Buffer zones have been established pending refinement. In the next round of re- evaluation the PMRA will refine the environmental assessment. CHLORTHAL PRESENT AS ACID (HERBICIDE) Final Decision completed 14/08/2008: Acceptable for continued registration. Mitigation to include new/revised label statements to further protect workers and the environment (includes a reduction in the maximum application rate on vegetables, additional PPE, restricted REI, a runoff statement, environmental hazard and other label statements). As well, the registrant has voluntarily discontinued residential uses, late fall application on turf and use on beans, potatoes and peas. DICAMBA LAWN AND TURF (HERBICIDE) Final Decision completed 05/08/2008: Acceptable for continued registration on lawn and turf, agriculture and industrial uses with the exception of the discontinuation of dicamba products containing the diethanolamine (DEA) form of dicamba. Final mitigation measures include new/revised label statements to further protect workers from exposure (e.g. PPE requirements) and to protect the environment (e.g. buffer zones). 2,4-Dichlorophenoxy acetic acid (2,4- D) and its salt and ester formsLawn & Turf (herbicide). Final Decision completed 16/05/2008: Acceptable for continued registration on lawn and turf, agriculture, forestry and industrial uses with the exception of the discontinuation of 2,4-D products applied to aquatic areas. Final mitigation measures include new/revised label statements to further protect workers and the environment. Update March 2011: Data required under Section 12 related to chemistry and toxicology, as well as rationales received for environment data requirements, have been reviewed. These confirmed that 2,4-D continues to be acceptable for continued registration. As a result, no further mitigation measures are required. FERTILIZER-PESTICIDE COMBINATION PRODUCTS Decision 02/02/2010: Based on consultations with the provinces, experts and registrants, the PMRA concluded that fertilizer-pesticide combination products for lawn and turf uses do not support the goals of best practices for pest management in turf. The regulatory action does not include agricultural uses of fertilizer-pesticide combination products (turf farm). Last date of sale of combination products: 31/12/2012. MALATHION LAWN & TURF (INSECTICIDE) Decision (adulticide use in residential mosquito abatement programs) 05/09/2003: Acceptable for continued registration for large-scale application in residential areas for control of adult mosquitos. Mitigation includes removal of non-ULV (non ultra-low volume) uses in residential areas, rate reduction for aerial ULV applications in residential areas to a maximum of 260 g a.i./ha and revised PPE for operators. Lawn & Continued On Page 19

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