BASF could receive a label for Endura fungicide for peanuts in 2003. The Research Triangle-based manufacturer is also awaiting registration for another product, Headline fungicide, says Tom McKemie, BASF technical service representative.

“We hope to have registration for Endura sometime in 2003,” McKemie told a group at a company-sponsored luncheon recently during the American Peanut Research and Education Society meeting in Raleigh, N.C.

Endura will target Sclerotinia, web blotch, leafspot, botrytis and has good activity on rust. Headline, whose strong point is leafspot control in peanuts, could receive a label in 2002, McKemie says. “Headline and Endura will fit together in a rotation program to provide peanut growers with complete foliar disease control and the best available Sclerotinia blight control.”

At the APRES meeting, McKemie spoke primarily about Endura.

Endura moves systemically through the leaf, with limited root uptake, McKemie says. The active ingredient in Endura inhibits the respiratory chain of fungi and blocks amino acid and lipid synthesis. “Cross resistance to other fungicides with Endura is low because it has a different site of action than strobilurins,” McKemie says. The Environmental Protection Agency has listed Endura fungicide as a “reduced risk” candidate. BASF has petitioned the agency for a number of other crops in addition to peanuts.

In regard to Sclerotinia blight control in peanuts, Endura has shown good control at 14-21 day intervals in tests at 11 locations in the Virginia-Carolina region, McKemie says. “That translates to a yield of 3,500 pounds per acre.”

In field tests, Endura reduced web blotch damage to less than 5 percent at 9.1 ounces per acre. “It's a super compound for web blotch,” McKemie commented. Endura also fits well in a Sclerotinia advisory spray program.

When the product is registered, the recommendation for the V-C region will be three applications of Endura beginning 45-60 days after planting, before the outset of Sclerotinia blight on 14-21 day intervals. It also fits well into a grower's standard peanut program and can be alternated with other fungicides to provide broad-spectrum disease control.

In Texas and Oklahoma, the recommendation will be three applications beginning 60-75 days after planting or at row closure, before the onset of disease, at 21-day intervals.

“The benefits of Endura fungicide are unsurpassed in the control of Sclerotinia blight and web blotch,” McKemie says. “Endura, with its alternative mode of action, maintains leafspot control well into the season and is best applied following a leafspot program using Headline fungicide.”

BASF is also researching the efficacy of Endura on Botrytis, Cylindracladium black rot and S. rolfsii (or white mold).

BASF says Headline will set a new standard for control of leafspot in peanuts. It also has activity on web blotch, pepperspot, white mold, Rhizoctonia limb, peg and pod rot. It will be registered on citrus, dried shelled peas and beans, grasses grown for seed, potatoes, small grains and sugar beets.