Justin McMechan - Crop Protection and Cropping Systems Specialist

Justin McMechan Faculty Bio
Introduction to CropWatch Readers
Crop Infographics
Previous CW Contributions:

Scout Emerging Corn for Insects; Don’t Assume Protection May 22, 2019

As corn begins to emerge, be alert to the potential for damage from early season insects such as cutworms, wireworms, white grubs, or other insects.

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Figure 1. Photos illustrating two points in rating system used to evaluate freeze damage to seedling corn. These show corn recovery from frost at V1-V2 growth stage in 2014 near Craig. (Photo by Roger Elmore)

Frozen, Emerged Corn? May 10, 2019

Temperatures in some fields early Friday morning may have caused some to remember 2017 conditions and wonder about possible frost damage to corn seedlings. Here's how this year is different.

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Soybean gall midge traps

Alerts Available for Tracking Soybean Gall Midge May 9, 2019

A new alert system will notify growers when emerging soybean gall midges are captured in field traps in counties where there was damage in 2018.

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Seed corn maggots
Seed corn maggots

Avoiding Injury from Seed Corn Maggot April 26, 2019

A new pest management resource for the seed corn maggot predicts fly development based on accumulated growing degree days. A new map, updated daily, shows degree days at multiple sites.

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Graph showing the effects of four planting dates and two hybrids on plate internode length.

Planting Date Impact on Corn Growth and Ear Issues March 12, 2019

Do delayed planting dates affect plant growth (leaf height, stem diameter, and internode length) and ear formation issues in corn? See what this student researcher learned from trials conducted near Clay Center in summer 2018.

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Bar graph showing distribution of various ear abnormalities within the tested group.

Corn Growth and Development: What We Have Learned About Corn Development From Studying Ear Issues January 23, 2019

In an effort to better understand the causal agents of ear formation issues first seen in corn in 2016-2017, researchers laid out an experiment in 2018 to typify types of ear formation damage as well as possible factors contributing to damage.

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Map showing distribution of soybean gall midge

Soybean Gall Midge: An Emerging Pest of Soybeans January 9, 2019

Report on 2018 observations of the soybean gall midge and research on the effect of various management practices on damage and yield. This is an article in the Proceedings of the 2019 Crop Production Clinics.

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Corn earworm larva

What’s New in Entomology: West Central Nebraska January 9, 2019

A survey of ongoing, new, and potential insect pest threats to crop production in west central Nebraska. This article is from the 2019 Crop Production Clinic Proceedings.

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