Home » Crop Protection

Crop Protection

EPA proposal could drastically change Bt corn resistance management

corn earworm

• By Pat Porter • My recent post discussed the proposal by Environmental Protection Agency to drastically change the resistance management regulations around Bt corn and cotton. You can submit a comment here before Nov. 9. The proposal is hard to find on the EPA website, so I have reposted it here. Part of the plan is to phase out ... Read More »

New Gramoxone 3SL Formulation

gramoxone label

Syngenta recently received a label for its new formulation of paraquat sold under the trade name Gramoxone 3SL at 3 pounds active ingredient per gallon. Paraquat is a widely used, restricted-use pesticide in the United States. However, because of misuse of the product and the subsequent poisonings, the Environmental Protection Agency is requiring changes to paraquat-labeled products. Products used in ... Read More »

New paraquat handling, training requirements take effect

paraquat activity on weeds

 • By Jason Bond and Ben Lawrence • The Environmental Protection Agency mandated manufacturers to update their paraquat labels by Nov. 14 with new safety, handling and training requirements. Key Points to Remember: • Purchasers, applicators, mixers, loaders, or tank cleaners of herbicide products containing paraquat must be certified applicators. • Purchasers, applicators, mixers, loaders, or tank cleaners must complete ... Read More »

EPA Registers BASF Fungicide

revysol logo

The Environmental Protection Agency has registered Revysol, the branded active ingredient name for mefentrifluconazole from BASF. State registrations are pending. In corn, it will be marketed under the Veltyma product brand name. The DMI fungicide, which provides broad-spectrum control of a variety of diseases, belongs to the Fungicide Resistance Action Committee’s Group 3. Revysol fungicide has a unique isopropanol link ... Read More »

Mild Winter Leads To Heavy Insect Presence In Alabama Corn

fall armyworm

Milder than normal winter temperatures allowed stink bugs and grasshoppers to survive and thrive this spring. Dr. Katelyn Kesheimer, an Alabama Cooperative Extension System entomologist, says brown and southern green stink bugs are showing up in corn right now. “The stinkbugs were heavy in wheat,” she says. “Once the wheat is harvested, they move into corn to begin feeding. There ... Read More »

EPA Cancels 12 Neonicotinoids

EPA logo

Effective May 20, the Environmental Protection Agency has cancelled registrations of 12 neonicotinoid insecticides based on voluntary requests from product registrants, according to a May 20 Federal Register notice. Under a December 2018 settlement agreement linked to an Endangered Species Act challenge by environmental groups, the companies voluntarily agreed to cancel 12 of 59 products that contain the active ingredients chlothianidin ... Read More »

In Missouri, Stick With Corn Through May

corn planting

The wet and cold start to this year’s corn planting season bodes poorly for yields, based on research from the University of Missouri Extension. But MU Extension agronomist Bill Wiebold says farmers should not switch from corn to other crops or early maturing corn varieties because of rain-delayed planting. There is still time to get corn in the ground and ... Read More »

Glyphosate-Resistant Johnsongrass Raises Management Questions

johnsongrass

• By Larry Steckel • Questions continue to arise on management of glyphosate-resistant (GR) Johnsongrass in corn, soybean and cotton. GR Johnsongrass continues to become more of an issue with each passing year. The main threat with Johnsongrass is in corn where there are few POST applied options. Judging by infestations of Johnsongrass in some corn fields, we may not ... Read More »

Are There Bifenthrin Alternatives For Brown Stink Bugs In Corn?

brown stink bug on corn

• By Angus Catchot • Brown stink bugs have been treated on a fair number of acres of corn in the Mississippi Delta this year. With the loss of methyl parathion, there are not a lot of good choices to control this pest in corn. We are essentially left with only the pyrethroid class of chemistry. As pyrethroids go, they are ... Read More »

Some Tips For Tough-to-Control Poa, Ryegrass

ryegrass

• By Larry Steckel • Clearly this year, many are having trouble managing ryegrass and poa. Questions began months ago and continue today and have ranged from tactics to burn them down before planting to how to control them in a standing corn crop. What has become abundantly clear is that glyphosate is no longer an effective burn down option ... Read More »