James Specht - Emeritus Professor of Agronomy

Comparison of node accrual between dicamba-injured soybean and non-injured soybean.

Dicamba’s Effect on Soybean Node Numbers August 8, 2018

Do soybean continue to produce a new node every 3.7 days despite being injured by off-target dicamba exposure? That was the question examined in this on-farm study.

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Soybean fields in planting date study at UNL's East Campus
Planting date studies conducted on UNL's East Campus showed yield decreases of 1/4 bu/ac (2003) and 5/8 bu/ac (2004) for each day after May 1 that soybean were planted.

Amplifying Positive Impacts of Early Soybean Planting April 19, 2018

The benefits of planting soybean near May 1 are well documented. Now, what are the next steps growers can take to further expand on these benefits? Are different maturity groups warranted? What groups are typically being used in irrigated and rainfed environments in Nebraska?

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Is Soybean Yield Limited by Nitrogen Supply? January 8, 2018

An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics exploring research on whether nitrogen supply is limiting soybean yield.

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soybean field

Planting Soybean after Soybean (Part 1): Planting Considerations April 13, 2017

Farmers are increasing their soybean plantings for 2017, which likely means some are shifting to soybeans-after-soybeans. This article looks at what you should be considering at planting time as you consider changing your cropping sequence.

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Center pivot irrigated soybeans
Management in a successful soybean-after-soybean cropping system may require growers to make some slight adjustments in their practices, including irrigation, seed selection, and pest management.

Planting Soybean after Soybean (Part 2): In-Season Management Considerations April 13, 2017

In Part 1 of this article, we look at considerations for planting soybean after soybean. In this article, Part 2, we share considerations for in-season management.

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Corn and soybean fields
Nebraska research documents yield increases from using corn-soybean rotations.

Rotation Impact on Irrigated Corn and Soybean Yields in Nebraska February 23, 2017

On most Nebraska rainfed farms, soybean and corn are usually rotated. On irrigated fields, however, the rotation sequence tends to shift to more years of corn between soybean, and in some cases, corn is grown continuously, year-after-year.

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