Jim Specht - Emeritus Professor of Agronomy

Soybean pods at the R7 stage showing different levels of membrane attachment within the pod.

Taking Note of the Ending Reproductive Stages of Your Soybean Crop

October 9, 2019
How will this weekend's frost/freeze affect your soybeans? That depends a great deal on soybean growth stage. Here's how to determine growth stage and the likely impacts you'll see in the field.

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Photo of field comparison of soybean planting dates and maturities at different stages.

Projecting Dates for Ending Reproductive Stages of a Soybean Crop Using SoyWater

October 9, 2019
How did the 2019 growing season affect the date of R7 (PM) in soybean varieties differing in MG (1.1 to 4.1) and planting date in eastern Nebraska? Take a look at graphs showing seasonal vegetative (Vn) and reproductive (Rn) development versus calendar date and compare the data with field photos.

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Strategies for delayed soybean planting

Strategies with Delayed Soybean Planting

June 13, 2019
Adjusting soybean planting practices (row spacing, seeding rate and the use of custom planting) and relative maturity of the variety can help maximize yield potential when planting after mid-June.

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Research plot with no-till corn residue, with left half planted to cereal rye in November 2018

Considerations when Planting Soybean Early

April 25, 2019
If you're planning to get an early start on your soybean planting, be sure to check for recommended soil temperatures and the forecast for the coming 48 hours to ensure optimal conditions for achieving good emergence.

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Planter ready to enter the field.

Corn and Soybean Planting Considerations

April 24, 2019
Planting sets the stage for a successful crop with an even emergence and stand. Consider these tips to help ensure you're providing favorable planting condition via proper soil conditions, planting window, planting depth, and seeding rates.

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Chart of Nebraska corn yields trends from 1971 to 1917.

Soybean and Corn Yield and Acreage Trends

August 15, 2018
Nebraska soybean and corn yields have steadily increased from 1971 to 2017 in both irrigated and rainfed production systems. Nebraska irrigated soybean increased at a linear linear rate of 0.68 bu/ac, and irrigated corn increased at a rate of 2.17 bu/ac.

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Soybean research field

Field Case Study of Dicamba-Injured Soybeans using Forensic Analysis

August 8, 2018
A field of dicamba-injured soybeans is used as an example to demonstrate the forensic analysis method to determine when dicamba exposure occurred.

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Chart showing rate of soybean node accrual

Are Your Soybean Plants Exhibiting Dicamba-Induced Leaf Injury?

July 19, 2018
Learn how to examine plant development and use this forensic strategy to determine the approximate calendar date when the plants in your field were likely exposed to dicamba.

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