, Farm Journal Seeds & Production Editor
Say pyrimidinedione three times. Never mind…just say Kixor. It's the only herbicide technology in the pyrimidineione class of chemistry available in the North American market. The anxiously awaited new herbicide recently received federal Environmental Protection Agency (EPA) registration and it's is specifically designed to tackle the toughest broadleaf weed challenges in a wide range of crops.
"We've had the opportunity to evaluate this product for the past five seasons and feel it provides solutions for several weed management challenges facing farmers," says Aaron Hager, University of Illinois weed specialist.
Starting this fall, four formulations will come to market that contain the Kixor technology. BASF says the products are "powered by Kixor.” What that means is you can't go out and buy a jug of Kixor. Instead, you buy a branded product that contains Kixor. Here's the lineup:
Sharpen—for use in cereals, corn, cotton, fallow, grain sorghum, pulses, soybeans and sunflower (desiccation). Provides burndown control when applied preplant and preemergence. It will often be used in combination with glyphosate. The cool thing: no waiting between application and planting.
OpTill—combination of Kixor plus imazethapyr (Pursuit) for a longer soil residual. Think burndown plus residual control of weeds like velvetleaf and cocklebur in soybeans. Also works in chickpeas and dry field peas applied preplant through preemergence. Fast burndown and residual weed control allow for better timing for in-crop glyphosate applications.
Integrity—combo of Kixor plus dimethenamid-p (Outlook) for a broad-spectrum control of grass and broadleaf weeds in corn. Fewer use restrictions than atrazine, it has a maximum use rate of 16 oz. It's a good foundation herbicide that provides burndown and several weeks of residual control on the toughest broadleaf weeds.
Treevix—for use in bearing and nonbearing tree crops and applied directed, postemergence.
Kixor's unique chemistry inhibits a key step in chlorophyll biosynthesis, called protoporphyrinogen IX oxidase (PPO). It started as a class of chemistry called benzoisolthiazoles. By opening the isothiazole ring and optimizing a side chain, scientists were able to create this new breed of PPO inhibitor that possesses high levels of soil and foliar activity on more than 70 broadleaf weeds, including those that have become more tolerant to glyphosate (waterhemp, marestail, common lambsquarters and common and giant ragweed) across multiple crops.
BASF will produce Kixor exclusively at its Hannibal, Mo., plant. Growers can place preorders for the 2010 growing season with retailers beginning in the fourth quarter of 2009.