Chris Proctor - Weed Management Extension Educator

Christopher Proctor

faculty

Assoc Exten Educator Agronomy & Horticulture University of Nebraska–Lincoln

Work Keim Hall (KEIM) 174

Lincoln NE 68583-0915

Work 402-472-5411 On campus, dial 2-5411

caproctor@unl.edu

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icon-academic-capEducation

BS, Washington State University, 2007
MS, Washington State University, 2009
Ph D, University of Nebraska, 2013

Faculty Bio
CropWatch Introduction
Nebraska Crop Management Conference

Photo comparison of 2 flelds with and without residual herbicide — Figure 1. The benefit of a residual herbicide can be clearly seen in these photos of fields with and without residual six weeks after planting. (Photos by Rodrigo Werle)

Keys to Managing Herbicide Resistance in Soybeans

April 6, 2017

Are last year's weed escapes still haunting you? Applying these six key management practices and five key timings can help you improve control of herbicide-resistant weeds this year.

Horseweed plant stages — Figure 1. (Top left) Newly emerged horseweed seedlings in the cotyledon stage. (Bottom left) Seedling in the rosette stage with true leaves formed. (Right) Horseweed plants that are early in the bolting stage.

Nebraska Extension Pest of The Month: Horseweed

January 5, 2017

Horseweed (marestail, Conyza canadensis L.) is a unique weed species that can emerge in both fall and spring. In Nebraska, unlike the eastern Corn Belt, horseweed populations predominantly emerge in fall as a winter annual.

Chart showing corn yield as affected by planting date and hybrid maturity

Finding the Balance Between Corn Yield and Cover Crop Biomass

November 29, 2016

Cover crops can provide either ecosystem services or forage benefits but understanding how they fit in cropping systems is still limited. This study assessed the effects of planting date (early and late), plant population (low, average, and high) and corn maturity (80 to 115 days relative maturity) on corn yield.

Figure 1. Marestail seedling growing in a no-till field. Due to its small size in the fall, pay special attention during scouting, especially in no-till fields where residue can hide seedlings.during scouting. — Figure 1. Marestail seedling growing in a no-till field. Due to its small size in the fall, pay special attention during scouting, especially in no-till fields where residue can hide seedlings.

Fall is Optimal for Marestail Management

October 28, 2016

With corn and soybean harvest nearing completion in Nebraska this is a great time to begin scouting fields for winter annual weeds like marestail. Timing is critical to successful control of marestail, especially in no-till soybeans as many populations have evolved resistance to glyphosate and ALS-inhibiting herbicides.