What is in this article?:
- Temik decision shortens response time
- Product availability is limited
- Resistance may be best bet for nematode control in cotton
Woodward and research pathologist Terry Wheeler, both of whom work out of the Texas AgriLife Research and Extension Center in Lubbock, say farmers may have alternatives but nothing that will fill the void left by the loss of Temik.
“Our first line of defense will be resistant varieties,” Woodward says. “But seed availability may become an issue.” He says when the industry expected a more gradual phase-out for Temik, they had a little breathing room to consider or develop other options and to build supplies of partially resistant varieties. The sudden shutdown, however, means that seed companies may not have adequate supplies of those varieties.
Currently, farmers may choose from four varieties with some nematode tolerance, including: ST 5458B2F, FM 4288B2F, Phytogen 367 WRF and DPL 174 RF.
Crop rotation is a second option. “In the Southwest, in areas where nematode infestation is a problem in cotton, growers may have the option of rotating with peanuts,” Woodward says. He says peanuts may not equal cotton revenue in the rotation year but will make up the difference with increased cotton yields the next season.
He says nematodes that infect peanuts are not the same as those that damage cotton.
Seed-applied insecticides may be useful for early-season thrips control but “are not capable of filling the void left by Temik. They may have limited utility in light to moderate nematode populations. But they have no utility with heavy nematode pressure.”
Woodward says claims that Bayer dropped Temik in conjunction with releasing Votivo is nonsense. Votivo, a biological control agent, “was never meant to replace Temik,” he says. “It was just poor timing” (and bad luck) that the two events coincided.