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What's new with fungicides

Gil Gullickson 07/28/2011 @ 4:22pm Crops Technology Editor for Successful Farming magazine/Agriculture.com

Farmers have some new fungicides to choose from in 2011 and 2012. Here's some of what's new this year and next.

New for 2011

MANA launched Incognito 4.5F fungicide this year for crops including soybeans. Incognito controls several soybean diseases, including white mold. Incognito's active ingredient is thiophanate methyl (also found in Topsin M and Benlate fungicides). Since it has a different mode of action than triazole or strobilurin fungicides, Incognito fits in a resistance management plan. To gain a wider disease-control spectrum, Incognito can also be tankmixed with other EPA-approved fungicides.

Stratego YLD fungicide is a new formulation of new triazole chemistry teamed with strobilurin chemistry for 2011. Having two modes of action broadens disease control, says Randy Myers, Bayer CropScience fungicide product manager. He says Stratego YLD also has unique plant surface retention and redistribution properties.

New for 2012

DuPont plans to have two fungicides for the row-crop market next year. Company officials expect Aproach and Vertisan to be launched into markets including corn, soybeans, and wheat. “Aproach is a fungicide that will give farmers reliable results,” says Todd Robran, DuPont U.S. row crops project manager. The strobilurin fungicide has both preventive and curative activity. “Aproach also will have white mold control in soybeans,” he adds.

Vertisan is the second fungicide offered by DuPont for 2012. “It has a totally new mode of action, different from strobilurins and triazoles,” says Robran. “It's a group 7 class of chemistry. There is no other group 7 in the corn and soybean market.”

Plans are for Vertisan and Aproach to be in a premix in 2013.

BASF plans to launch a new fungicide for 2012 named Xemium that will include corn and soybeans.

Xemium belongs to a chemical class called carboxamides and has a mode of action called a succinate dehydrogenase inhibitor. Carboxamides are new to the corn and soybean markets. Xemium gives corn and soybean farmers another option to chemistries classes like strobilurins and triazoles now on the market.

The Xemium family will be effective against major diseases in crops including corn, soybeans, and cereals. The fungicide family has both curative and preventative properties, meaning it can curb existing fungal infestations while preventing new ones.

Depending on the market, this fungicide will be sold under the trade names Priaxor or Systiva. Priaxor will be the brand name in corn, soybeans, canola, and sunflowers. It will feature a 2:1 ratio of F500 and Xemium. F500 is the active ingredient in BASF's Headline fungicide.

“When we combine the two (F500 and Xemium), we get a very broad spectrum of disease control,” says Scott Walker, BASF biology product manager for fungicides.

Besides disease control, BASF officials say the fungicide combo boosts plant growth efficiency and tolerance to stress. The Priaxor mix between F500 and Xemium will typically provide 21 to 28 days of residual control, say BASF officials.

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