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2016-06-10T00:00:00.000Z

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Wrong Jim Dunphy?

Dr. Jim Dunphy

Crop Science Extension Soybean Specialist

North Carolina State University

Direct Phone: (919) ***-****       

Email: j***@***.edu

North Carolina State University

Campus Box 7013

Raleigh, North Carolina 27695

United States

Company Description

The mission of North Carolina State University is to serve its students and the people of North Carolina as a doctoral/research-extensive, land-grant university. Through the active integration of teaching, research, extension, and engagement, North Caroli... more

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Background Information

Education

Ph.D.

Web References (139 Total References)


In an effort to evaluate factors ...

ncsoy.org [cached]

In an effort to evaluate factors that may lead to yield increases, Dr. Jim Dunphy, Soybean Extension Specialist at North Carolina State University designed an experiment where he evaluated the effect of five different factors in a combined "Cadillac" treatment with funding from the North Carolina Soybean Producers Association and the soy checkoff.


Jim Dunphy calls last year's ...

southeastfarmpress.com [cached]

Jim Dunphy calls last year's study on maximizing dryland soybean yields "the Cadillac Treatment" because he took steps to achieve as high a yielding situation as possible.

"The first thing we did was go to a variety that does well in a high yielding environment," Dunphy said at the North Carolina Commodities Conference in Durham Jan. 15, where he released the results of the test. Dunphy is the North Carolina State University Extension soybean specialist.
For the study, Dunphy selected the two highest yielding Group V varieties and the two highest yielding Group VI varieties, varieties that perform well in a 60 bushel per acre yield environment. The varieties he planted in 2015 were Southern States' SS 5511 N R2, Dyna-Gro's 32RY55, UniSouth Genetics' USG 76S 73R and Syngenta's S76-R6.
...
The goal was to plant the four varieties from as early as mid-April to as late as mid-May, but Dunphy said, "the weatherman didn't let us do that. We planted one of them in early May; we planted two of them in late May and one of them the first day in June."
Dunphy said the varieties were planted in 15 inch rows at relatively low population rates, 90,000 to 120,000 seeds per acre. "That was on purpose," he said.
...
Potassium was also applied because Dunphy explains that potassium is needed for the soybean plants to better utilize nitrogen. Fungicides were also used.
His "Cadillac" yields ended up being 54 bushels per acre in Beaufort County, 52.5 bushels per acre in Pender County, 53.3 bushels per acre in Sampson County and 79.5 bushels per acre in Surry County.
Dunphy said an important lesson learned was the importance of fungicides. The three he used were Topguard, Quadris Top and Priaxor. Looking at all four sites, Dunphy said the research shows that fungicides are worth the money spent. "When we put all four sites together, we got a response to fungicides," he said. "None of those three gave us a significant response at all four locations; neither did any of them fail."
Dunphy stressed that fungicide timing is critical. And that has always been a challenge.


Jim Dunphy, Extension ...

southeastfarmpress.com [cached]

Jim Dunphy, Extension soybean specialist at North Carolina State University, is optimistic the state will soon reach that magic number.


Jim Dunphy, North ...

southeastfarmpress.com [cached]

Jim Dunphy, North Carolina State University Extension soybean specialist, discusses his maximum yield dryland soybean research with Steve Barnes, a Washington County crops consultant.

...
Dunphy is conducting a maximum yield soybean trial at Haslin Farms. He is examining the benefits of non-foliar yield enhancements, in furrow enhancements and seed treatments. He said seed treatments have a place in improving soybean yields.
...
Jim Dunphy, North Carolina State University Extension soybean specialist, is conducting a maximum yield dryland soybean trial at Haslin Farms where he is examining the benefits of non-foliar yield enhancements, in furrow enhancements and seed treatments. In his comments at the field day, Dunphy said seed treatments do have a place in increasing soybean yields.


Creating a corn earworm threshold for ...

www.soybeancheckoffresearch.org [cached]

Creating a corn earworm threshold for flowering North Carolina Soybeans; James Dunphy ( North Carolina State University), Dominic Reisig ( North Carolina State University)($4467).

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