Robert Klein - Western Nebraska Crops Specialist

Robert Klein

faculty
Work
WCREC 402 W State Farm Rd North Platte NE 69101-7751
US
Work 308-696-6705 On campus, dial 7-6705

Emeritus Professor and Extension Cropping Systems Specialist, 2019

Faculty Bio

Wheat streak mosaic virus in wheat
Severe wheat streak mosaic virus in a wheat field in Deuel County on May 15, 2017. (Photo by Stephen Wegulo)

Why Control of Volunteer Wheat is Critical to Protecting 2018 Yields

July 13, 2017
Timely control of volunteer wheat and other weeds is key to managing yield loss risk in your 2018 crop. Yield-limiting risk factors affected by weed control include wheat streak mosaic and other diseases, insects (wheat stem sawfly and disease vectors), moisture loss, and increased weed seed production.

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In Figure 1a the field on the right, with heavier crop residue, shows dicamba-tolerant soybeans that had been sprayed with new generation dicamba. The field on the left, non-dicamba-tolerant soybeans planted side-by-side without a buffer, shows symptoms of injury caused by dicamba, the consequences of spray drift or volatilization. Figure 1b illustrates how dicamba affects newer growth more than older leaves. (Photos by Tim Creger, Nebraska Department of Agriculture)

Dicamba Injury Symptoms on Sensitive Crops

June 28, 2017
Dicamba-resistant soybean, genetically engineered to provide resistance to dicamba and glyphosate, was made commercially available for the 2017 growing season. This article looks at potential dicamba injury to sensitive crops and plants.

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Wheat exhibiting yellow streak of cephalosoprium leaf stripe
Cephalosporium stripe symptoms on wheat leaves with prominent yellow color. (Photos taken in North Platte on May 25, 2017)

Cephalosporium Leaf Stripe Developing in West Central Wheat

May 25, 2017
Cephalosporium stripe, caused by a soilborne pathogen, is developing in wheat in west central Nebraska and may reduce yields if severe.

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Palmer amaranth
Figure 1. This female Palmer amaranth plant can produce up to 0.5 million seeds.

Watch for Palmer Amaranth in Conservation Reserve Program (CRP) Fields

May 12, 2017
Palmer amaranth has not been confirmed in conservation plantings in Nebraska; however, the identification and occurrence of Palmer amaranth in CRP fields in Iowa has raised concerns among weed scientists and growers about its spread into conservation plantings in Nebraska and offer some suggestions for growers.

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Spraying the New Phenoxy Herbicide Formulations in Xtend and Enlist Soybeans Will Present Challenges

May 11, 2017
The new phenoxy herbicide formulations, including Enlist Duo™ (Dow), XtendiMax® (Monsanto), Engenia™ (BASF), and FeXapan™ (DuPont), offer growers new management options along with new application requirements. To alleviate problems related to applying new phenoxy herbicide formulations in soybeans as well as to increase herbicide performance, manufacturers have established application requirements. Here we discuss some of the key application factors to consider.

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Wheat variety trials exhibiting difference levels of storm damage
Figure 1. Wheat variety test plot northwest of McCook illustrates the difference in amount of damage among varieties from heavy wet snow and rain. (Photos by Robert Klein)

Be Patient When Assessing Winter Wheat Damage

May 5, 2017

Additional time is needed to properly access the injury and potential yield loss of Nebraska winter wheat, given the cold temperatures that followed last week's below freezing temperatures, heavy wet snow, and high winds. It takes at least a week to 10 days of warm temperatures to make a quality assessment.

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Field of wheat near McCook April 27, 2017.
A good, thick stand of wheat, such as this one near McCook provides a warmer microclimate near the soil surface that reduces the potential for freeze injury. (Photos by Robert Klein)

Assessing Freeze Injury to Wheat

April 27, 2017
As temperatures dropped below 28° F at a number of sites this week, the authors address how to assess whether freeze damage has occurred.

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fertilizer applicator in the field
Figure 1. Fertilizer is one of a farmer's largest inputs and also the one that often varies the most in price from year to year. (Photo by Bob Klein)

Fertilizer Price Changes from 1994-2017

April 25, 2017
Fertilizer, one of the major costs in crop production, changes more in price each year than many other input costs. This articles addresses how farmers can reduce their fertilizer costs by selecting the most economical source for the fertilizer they need.

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