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Aproach fungicide approved for 2013
Corn, soybean, and cereal farmers have a new
fungicide option for 2013. DuPont officials today announced Aproach fungicide
has been granted federal registration by the Environmental Protection Agency.
“Aproach is a strobilurin fungicide, the newest
active ingredient in that class,” says Todd Robran, DuPont fungicide
offers not only preventative control, but curative activity as well.
“As I talk to growers, that is important,” adds
Robran. “We prefer that all fungicide applications be made preventatively.
Oftentimes, though, by the time a grower gets a consultant to look at a field,
gets an applicator, and fights Mother Nature for a day or two, an application
can be delayed. Aproach compensates with curative activity for those
Robran says another factor that distinguishes Aproach
from other strobilurin fungicides is its ability to redistribute within the
“It can move within the canopy itself, closer to
the soil floor where key diseases originate,” he says. Aproach is labeled for
such diseases as white mold in soybeans, gray leaf spot in corn, and powdery
mildew in cereals.
It also has plant physiology attributes like
other strobilurins. In soybeans, that can lead to plants staying greener longer
and better pod fill, he says.
Robran says its use will be targeted toward
varieties and hybrids with the best chance of response. Also taken into
consideration will be factors like imminent disease pressure, past field
history (such as corn-on-corn), and past disease pressure.
Local retailers will determine price, but expect
product costs to hover around $14 per acre, says Robran.
costs hover around $7 per acre for ground, and $10 to $12 per acre for aerial.
DuPont next has plans to launch Aproach Prima, pending
regulatory approval. The soonest this would be available is for the 2014
growing season, pending regulatory approval. This is a mix of the active
ingredient in Aproach with cyproconazole, a triazole fungicide. This will give
resistance to strobilurin fungicides a product with two modes of action.
Biotypes of frogeye leaf spot in soybeans that resist strobilurin fungicides
have been found in states including
Illinois, Kentucky, Missouri, Tennessee, and Louisiana.