Table 7.3.3. Specific use restrictions for dithiopyr in New York State

  Maximum use rate in NY Labeled for use Allowable use
Product By active ingredient By product In New York State On Long Island Turf Landscape
*Dimension 2EW 0.5 lb per acre per year 2 pints per acre per year Commercial applicators only 1 pint per acre (0.25 lb active ingredient) Y Y
*†Dimension EC 0.5 lb per acre per year 2 quarts per acre per year Commercial applicators only Not for use in Nassau and Suffolk Counties Y Y
*∆Dimension Ultra 40WP 0.25 lb per acre per year 10 ounces per acre per year Commercial applicators only Allowable for use Y Y
*†Dimension 0.10 & 0.15G
(Professional with fertilizer)
0.5 lb per acre per year 330 and 500 pounds per acre per year depending on formulation Commercial applicators only Not for use in Nassau and Suffolk Counties Y N
Dithiopyr G (Professional and consumer/retail) Various products and manufacturers Proprietary products containing dithiopyr and fertilizer available for use in New York State and on LI. Professional products restrict maximum use to 0.25 lb active ingredient per acre per year on Long Island. (Unless professional products restrict maximum use to 0.25 lb active ingredient per acre per year, they are not allowed for use on LI.) Check labels for other restrictions.

* Restricted-use pesticide; may be purchased and used only by certified applicators or used by someone under the supervision of a certified applicator.
† Not for use in Nassau and Suffolk Counties
Δ Rate and/or other application restrictions apply in New York State. See label for more information.

Compiled by Andrew Senesac, Extension Weed Specialist, Cornell Cooperative Extension – Suffolk County