What is in this article?:
- Bailey, Sugg peanut varieties held off diseases during wet summer
- Bailey, Sugg varieties saved the day
- Extra fungicide application
• The high percentage of Bailey (estimated at 50 percent of the North Carolina crop) and Sugg (25 percent of the crop) planted, significantly reduced the amount of damage to peanut yield caused by diseases.
PLANT BREEDER Tom Isleib, right, says Bailey and Sugg varieties released by his program seem to have weathered the excessive rainfall well this summer.
Extra fungicide application
“If we do get one of these tropical fronts, then almost certainly an extra fungicide application will be needed,” Shew says.
“For the last fungicide application, Bravo is the best fungicide to use. It is a broad spectrum fungicide and more likely to kill fungi that might have resistance to some of the other fungicides used and prevent this leftover disease fungi from being carried over to next year’s crop.
“An exception to using Bravo as the last fungicide application is when growers have sclerotinia in a peanut field.
“Bravo will likely make sclerotinia worse, if we get cool, wet weather between now (mid-September) and digging.
“One alternative to Bravo as the last fungicide application is Fontellis.
“In our trials one pint of Fontellis — at the recommended rate for leafspot — did not provide much control on sclerotinia. If we went up 1.5 pints per acre, the labeled rate for sclerotinia is equal to the one pint per acre rate of Omega in fields with heavy disease pressure,” Shew says.
“Omega must be applied 30 days prior to harvest, which may be an issue on some of these late planted peanuts,” she adds.
“It’s always a good idea to use a high rate of water, usually 20 gallons per acre, to insure getting enough of the fungicide down into the foliage of the peanut plant to control diseases.
“In these late season applications it may be helpful to spray early in the morning or at night to insure adequate coverage,” Shew says.
This year, more so than any in recent history, will demand that growers be highly accurate on when to dig peanuts. A lingering problem from all the rain is a heavy crust of soil that has left many peanut fields hard, as hot, dry weather came in September and literally baked the moist soil.
Getting peanuts to full maturity will be critical to keeping pods on the stem during the digging process. In large part, how well growers time digging and how efficiently they dig their peanuts will likely make the difference between an average and a good crop.
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