Justice insecticide packs double punch

• Regardless of geography or target insect, Justice gives growers a powerful double punch to fight pests in one practical, easy-to-use formulation.

Gowan Company received Federal EPA registration of Justice insecticide less than a year ago.

As the current season progresses, soybean growers now have an option to fight key pests that continue to emerge and others that have been problematic for years.

Justice insecticide is a unique formulation of two active ingredients — acetamiprid and bifenthrin. Both active ingredients are proven performers against a range of soybean pests in southern and northern production areas.

In Southern states, stinkbugs, armyworms, bean leaf beetle and soybean looper are increasingly devastating pests that reduce yield and compromise even the most carefully designed IPM programs.

In northern areas, soybean aphid is a major concern. First identified as a serious pest in North America in 2000, soybean aphid quickly evolved into a significant problem causing stunting, reduced pod set and smaller seeds.

Regardless of geography or target insect, Justice gives growers a powerful double punch to fight pests in one practical, easy-to-use formulation.

“Acetamiprid is a neonicitinoid that causes paralysis of target pests after ingestion with long residual against labeled pests, says Chad Dyer, Justice Product Manager for Gowan Company. “Bifenthrin aids in a quicker knockdown and is one of a few synthetic pyrethroids that is relatively stable in direct sunlight.”

Alan Blaine is a crop consultant based out of Starkville, Miss. As a former Mississippi Extension soybean specialist, he’s well versed on the challenges of current pest control issues as well as those potentially posing a threat.

“Right now in this area, we’re primarily focused on bean leaf beetle and brown and green stink bugs,” he says. “I used Justice last year primarily for bean leaf beetle. It did a good job. I also used it later in the season for stink bugs and had good control in 2012.”

“Two applications controlled the labeled pests we were faced with last season,” he says. “That’s only one season of experience, but it worked and worked well. I’ve tried other mixtures that have let me down. Obviously, I want something that works.”

New soybean pests are also a concern. The kudzu bug — Megocopta cribraria — is closely related to stink bugs. First discovered in the eastern U.S., the species is spreading westward to other Southern states.

“We’re seeing kudzu bug for the first time,” Blaine says. “I wouldn’t be surprised if it becomes a big problem in the next couple of years. We’ve also been seeing more podworm in the last couple of years. Overall, we’re seeing some shifts in pest populations that will take a little closer attention to deal with as we go forward.”

Justice is a liquid oil flowable (OF) formulation. “We tested several formulations and the OF formulation provided the best results,” Dyer says. “It proved to be the most stable solution to enable both active ingredients — acetamiprid and bifenthrin — to remain in the most biologically active forms.”

In Southern soybean production, Justice is labeled at a use rate of up to 5 ounces per acre. Soybean looper and armyworm species require the higher labeled rate. The upper end of the labeled rate is also recommended if pest populations are significantly above economic thresholds at time of treatment.

For soybean aphid in northern growing regions, Justice is labeled at 2.5-3.0 ounces per acre.

Justice has a 30 day PHI (pre-harvest interval), a 12 hour REI (restricted entry interval), a zero- day plant back interval for soybeans and a 30 day plant back interval for all other crops. It is approved for chemigation, ground rig and aerial applications.

For more information, contact Chad Dyer, Justice Product Manager, Gowan Company, (928) 539-5465, cdyer@gowanceo.com.


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