J. Chaput, OMAFRA, Minor Use Coordinator, Guelph
The Pest Management Regulatory Agency (PMRA) recently announced the approval of a minor use label expansion registration for Lalstop G64 WG Biological Fungicide (previously known as Prestop WG) for suppression of soil-borne and foliar diseases on greenhouse-grown eggplant, Asian water spinach, strawberries and indoor-grown cannabis in Canada. Lalstop G64 WG Biological Fungicide was already labeled for use on several greenhouse-grown vegetables, herbs and ornamentals in Canada for management of these diseases.
These minor use projects were submitted by Ontario as a result of minor use priorities established by growers and extension personnel. The following is provided as an abbreviated, general outline only. Users should be making pest management decisions within a robust integrated pest management program and should consult the complete label before using Lalstop G64 WG Biological Fungicide.
| Crop(s) | Target | Rate | Application Information |
| GH eggplant, GH Asian water spinach, GH Strawberries, Indoor-grown cannabis | Suppression of damping-off (Pythium spp. and Rhizoctonia solani) and crown and root rot (Pythium spp.) | Growing Media or Drench Application: Prepare an aqueous suspension of LALSTOP to 0.05% (see label instructions) | Treat the growing media prior to seeding, transplanting or potting, or else make a drench application immediately after seeding, transplanting or potting. Once seeds are sown or seedlings transplanted, additional applications can be made as a drench or foliar application. Always use an aqueous suspension of the product. Repeat applications every 3 to 6 weeks. Can also be used in hydroponic systems. |
| GH eggplant, GH Asian water spinach, GH Strawberries, Indoor-grown cannabis | Suppression of Botrytis stem canker and gray mold | Foliar Spray: Prepare an aqueous suspension of LALSTOP to 0.05% (see label instructions) | Apply preventatively the 0.05% aqueous suspension of LALSTOP to plant stems and leaves. Spray to wet but not to run-off. Repeat every 3 to 4 weeks. Can also be used in hydroponic systems. |
Do not apply or allow drift of Lalstop G64 WG Biological Fungicide to other crops or non-target areas. Do not contaminate off-target areas or aquatic habitats when spraying or when cleaning and rinsing spray equipment or containers.
Follow all other precautions, restrictions and directions for use on the Lalstop G64 WG Biological Fungicide label carefully.
For a copy of the new minor use label contact your local crop specialist, regional supply outlet or visit the PMRA label site https://www.canada.ca/en/health-canada/services/consumer-product-safety/pesticides-pest-management/registrants-applicants/tools/pesticide-label-search.html
Note: This article is not intended to be an endorsement or recommendation for this particular product, but rather a notice of registration activity.
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