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Abundance of New Varieties
for 2003

by Jina Martin

Growers won’t have a shortage of new varieties to choose from in the 2003 season. Eleven new varieties will be available for growers to try their hand at this year.


UF Releases Six Varieties

The University of Florida (UF) has been busy breeding peanuts. The university has released six new varieties for the 2003 season. The six cultivars include two early maturity varieties (Andru II and GP-1), two medium-maturity varieties (Norden and Carver) and two late-maturing varieties (Hull and DP-1).
Dan Gorbet, professor of agronomy and head of UF’s peanut breeding program, says seed will be limited for these varieties.

“Growers need to contact their seed suppliers early.” Gorbet says. “Norden is the variety that should have the greatest amount of seed available of these six varieties for production in 2003.” Gorbet says these varieties offer particularly good options for growers in the southeast.

“These cultivars offer producers and the peanut industry some excellent variety choices for southeast conditions,” he says. “We should now be able to produce excellent high oleic runner peanuts in the southeast.”


Andru II
Growers need all the help they can get battling tomato spotted wilt virus (TSWV). Andru II is another tool they can use and is ideal for southeast production.

“Andru II has excellent TSWV resistance, equal to or better than Georgia Green,” Gorbet says.

Also on the disease front, this new variety has some white mold resistance, equal to or better than Georgia Green. This variety has good grades and high oleic chemistry. Pod yields have been equal to Georgia Green in field tests, Gorbet says.

“Andru II should be an excellent choice for southeast production, being the most productive early maturity, high oleic cultivar currently available,” Gorbet said.

Gorbet says this variety would be suitable for all peanut-growing regions. This variety has early maturity in Florida studies, but is not quite as early as Andru 93 or Virugard.


GP-1

GP-1 is another new UF variety with high oleic chemistry.
This variety has some TSWV resistance, but not quite as good as Georgia Green, being most suitable for lower TSWV pressure situations. Gorbet says this factor would make it unsuitable for southeast production.

“Pod yields have been equal to Georgia Green in low TSWV pressure situations, but less where TSWV was high,” Gorbet says. GP-1 has runner seed size and intermediate runner to spreading growth habit and early maturity in Florida tests.


Norden

Norden is another tool for growers to combat TSWV. This variety has shown TSWV resistance equal to or better than Georgia Green.
In terms of other disease resistance, it can be compared fairly equally with Georgia Green.

“Norden has been equal to Georgia Green in resistance to white mold, leafspot and Rhizoctonia disease,” Gorbet says.
It is also a high oleic variety with runner size pods and seeds. Pod yields have been equal to or better than Georgia Green.
Norden is a medium-maturity variety with a runner growth habit and should be suitable for all growing regions.


Carver

Carver has excellent yield potential with somewhat larger and elongated seed. Carver is one of only two new UF releases to have normal oil chemistry. This new variety has somewhat better resistance to TSWV and white mold than Georgia Green. Carver also has some resistance to CBR and Rhizoctonia limb rot. It has a medium maturity, runner growth habit and runner pod and seed size. Carver is suitable for all growing regions, but seed will be limited in 2003.


Hull

Hull is yet another variety available for growers to combat TSWV, as well as a number of other diseases.

“Hull has resistance to TSWV and late leafspot similar to C-99R,” Gorbet says. “It has white mold resistance equal to or better than C-99R and better than Georgia Green.”

The variety has some resistance to CBR and some root-knot nematode resistance. This later-maturing variety has jumbo runner seed size and high oleic chemistry. It is similar in seed size to C-99R, with somewhat less vine growth. Gorbet says Hull is not suitable for Oklahoma and the V-C region.


DP-1

DP-1 could be considered the top in its class.

“DP-1 has the highest level of resistance to late leafspot, TSWV and white mold currently available in a U.S. peanut cultivar,” Gorbet says. “We have recorded 4,800 pounds per acre pod yields in Florida tests with no fungicide applied for leafspot control.”

This variety is one of the two new UF varieties to have a normal oil chemistry. Seed size is similar to GK 7 and Florunner. It has less vine growth than C-99R. DP-1 is a late-maturity cultivar and is not suitable for Oklahoma and the V-C region, Gorbet says.


UGA Continues Battle on TSWV

The University of Georgia (UGA) has added more weapons in their arsenal against TSWV with their newly released varieties.
“Georgia-01R and Georgia-02C are the one-two punches to help combat the devastating TSWV,” says Bill Branch, peanut breeder at UGA. “Georgia-01R and Georgia-02C each have very high levels of TSWV resistance needed for peanut production in the southeast U.S.”


Georgia-01R

Georgia-01R is a new multiple pest resistant runner-type peanut variety.
Besides having a high level of resistance to TSWV, Georgia-01R also has a high level of resistance to both early and late leafspot, stem rot or white mold, CBR, leaf hoppers and leaf scorch.

“When grown with recommended or reduced pesticides, Georgia-01R was found to have a significantly lower percentage of disease incidence, higher yield, grade and gross dollar value return per acre compared to C-99R,” Branch says.

This variety has the same maturity, spreading runner growth habit and seed size as C-99R.


Georgia-02C

Georgia-02C also has a high level of disease resistance to TSWV, as well as CBR resistance. This variety is a high-oleic runner-type peanut. It has the same medium maturity as Georgia Green with seed and pod size slightly larger. Georgia-02C has spreading runner growth habit similar to AgraTech 201.

This variety has resulted in higher yields, grades and dollar value returns per acre than Carver, C-99R, Norden, Hull and
AgraTech 201, Branch says.


Southwest Sees Three Releases

Texas A&M has added three new varieties to the mix as well. Charles Simpson, peanut breeder at the Texas A&M Agricultural Research and Extension Center at Stephenville, says some seed of the new varieties will be available for the coming growing season.
Two of the new releases are high oleic varieties – Tamrun OL01 and OLin.

“These two high oleic varieties were developed jointly with Oklahoma and the USDA, and were released jointly with the Oklahoma Agricultural Experiment Station,” Simpson says. NemaTAM is the other new variety.


Tamrun OL01

Tamrun OL01 can be compared to Tamrun 96 for its maturity range and disease resistance, but yields about 10 percent more than Tamrun 96. It will grow where Tamrun 96 and Florunner grow, Simpson says.

“Tamrun OL01 is a high oleic runner with large seed size,” Simpson says.

Mark Black, extension plant pathologist at Texas A&M, says this variety is moderately resistant to TSWV and southern blight, but is susceptible to root-knot nematodes. It has more stress tolerance than Georgia Green.


OLin

OLin can be compared to Tamspan 90. OLin has a maturity range equal to Tamspan 90, with similar disease resistance. It will grow where Tamspan 90 will grow. It also has similar to 10 percent less yields than Tamspan 90, Simpson says.

“This is a high oleic Spanish variety with good yield and seed size,” Simpson says. Several West Texas sites had yields above 5,000 pounds per acre in 2001 and 2002, Simpson says.


NemaTAM

NemaTAM is a new variety that is resistant to root-knot nematodes. This variety is susceptible to TSWV, however, and should be grown in areas with low TSWV-pressure.
Black says NemaTAM is also susceptible to southern blight. But, the variety is resistant to rust. Simpson says NemaTAM’s yields have been up to 150 percent of Florunner under nematode pressure. This variety will grow “any place Florunner will grow,” Simpson says. The maturity is also the same as Florunner. NemaTAM has a runner growth habit.

PG

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