Jim Specht - Emeritus Professor of Agronomy

emerging corn showing varying degrees of frost damage

Evaluating Freeze and Chilling Injury in Corn and Soybeans

May 13, 2020
The weather took a turn to the cold side over the last week. Across Nebraska, lows at or below 32°F were recorded. Clear conditions coupled with these temperatures favor frost formation especially in low lying areas. So, what does this mean for our crops?

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tractor planting corn in a field

Corn and Soybean Planting Considerations for 2020

April 22, 2020
Everything we do at planting sets the stage for the rest of the year. With tight economics, it’s important to make wise decisions with the factors we can control during planting season.

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soybeans in 2003 and 2004
Planting soybean early is critical to maximizing yield. This has been found through numerous University and on-farm research studies in Nebraska and surrounding states.

Understanding the Soybean Germination Process for Early Planted Soybean Decisions

April 9, 2020
Planting is anticipated to begin for many growers in Nebraska the next few weeks. Based on formal research reports showing increased yields, we have recommended early soybean planting beginning mid- to late- April.

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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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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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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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