PBI-Gordon's Arkon herbicide liquid is now approved for use in 48 of 50 states, the company said.
With the active ingredient Pyrimisulfan, Arkon is approved for use on established cool- and warm-season greens, fairways and roughs for post-emergent control of annual kyllinga, annual nutsedge, cockscomb kyllinga, false green kyllinga, green kyllinga, path rush, purple nutsedge, yellow nutsedge, buckhorn plantain, common chickweed, dollarweed, false dandelion, Florida betony, ground ivy, hairy bittercress, henbit, lawn burweed, purple deadnettle, rough fleabane, Virginia buttonweed, wild garlic and wild onion.
Additionally, research has shown that the liquid herbicide reduces the number and viability of nutsedge tubers.
Arkon is registered in all states except Alaska and California. Its active ingredient is the result of a partnership between PBI-Gordon Corp., Kumiai Chemical Industry Co. and its U.S. subsidiary, K-I Chemical U.S.A Inc. Previously approved by the U.S. Environmental Protection Agency, Pyrimisulfan has been available in the agricultural market for several years.
In addition to years of proprietary and independent testing before launch, PBI-Gordon provided demonstration product Arkon to more than 460 turfgrass professionals throughout the country earlier this year so they could learn about Arkon firsthand.
Part of PBI-Gordon's Powered by Vexis family of herbicide products, Arkon is a low-rate, non-phenoxy product. The application rate is 1.2 to 1.7 ounces per 1,000 square feet. The maximum annual use rate is 2.5 ounces per 1,000 square feet. For harder-to-control weeds, two applications at the 1.2 ounces per 1,000 square feet rate at 30 apart should be considered.