What is in this article?:
- Disease control still critical in peanut production
- Need-based point system
- Many products out there
• All peanut diseases are still relevant, and to ignore any one of them would be a mistake.
• Many fungicides are now available for leafspot, and that’s probably the disease growers should be most concerned about.
• As far as leafspot resistance, the best variety bets are GA-07W, FLA-07 and Tifguard.
Many products out there
“There are a lot of white mold products out there. If you look at economics, the least expensive products are the generic Folicur ones. Tubuconazole is a fairly cheap product right now. In some trials, it doesn’t do quite as well as some of the name-brand products. When you look at costs, you could put together a white mold/leafspot program with generics at a much lower cost than a name brand. You need to look at it on a field-by-field basis.”
One new fungicide product that growers will see on the market for next year is Fontelis from DuPont, says Hagan. “It is a premium product. Its yield response and level of disease control is comparable to products like Provost, Abound and Convoy.”
For the past couple of years, says Hagan, researchers have been looking at peanut seeding rates in Headland, Ala.
“A number of years ago in the mid-1980s, there was work done about reducing seeding rates. They were able to show that with planting Florunner at 70 pounds of seed per acre, they were able to make the same yields as with about 100 pounds per acre. After the work was done, TSWV came on the scene, and that was the end of cutting seeding rates, because with susceptible varieties, whenever you started thinning the stand, the amount of virus increases dramatically. So we pushed people to plant six seed per foot of row.”
In 2010, researchers planted GA-07, GA-06G and Georgia Green. “GA-07 and GA-06 outyielded Georgia Green. Also, we had a little bit less disease with the low seeding rate, but the yields were the same across all seeding rates. I’m not suggesting you go to two or three seed per foot of row, but there is some margin for working within seeding rates as a means of saving a little bit of money. If TSWV comes back, we’ll have to jack up seeding rates. If we’re in a situation where virus is declining, this may be a place where you might save a little bit of money. We got the same results in 2009 as in 2010, and we’ll repeat this trial this year.”