Nevin Lawrence - Integrated Weed Management Specialist

Nevin Lawrence

faculty
Work
4502 Ave I Scottsbluff NE 69361-4939
US

CW: Introducing Nevin Lawrence
Faculty Bio

Trial studying efficacy of products on Palmer amaranth

Palmer Amaranth Control in Dry Bean January 14, 2019

Residual herbicides applied at or before planting are critically important to controlling emerged Palmer amaranth in dry bean. Research at the Panhandle REC assessed the efficacy of PRE and pre-plant incorporated (PPI) residual herbicide programs.

Read more

Dry bean weed management trial

The Importance of Early Season Weed Control January 9, 2019

Do early season weeds have the same impact as later season flushes? Researchers here report on a 2018 study conducted in dry bean to compare how soon after planting crop yield was impacted by weed presence.

Read more

Uncontrolled Russian thistle in seeded winter wheat field.
Uncontrolled Russian thistle in seeded winter wheat field.

Fall Strategies for Weed Control in Winter Wheat August 29, 2018

Managing weeds at least two weeks prior to planting winter wheat and then controlling winter annuals this fall are important to reducing disease, saving soil moisture, and achieving top yields next summer.

Read more

Weed control research in dry bean plots
A review of multiple studies conducted on weed management in dry beans in the US and Canada indicated that without weed control, yield losses could be as much as $720 million per year. (Photo by Nevin Lawrence)

What Would Happen if We Stopped Controlling Weeds? July 19, 2018

A recent study of 10 years of research in key dry bean production areas of the US and Canada showed the value of weed management. Without weed control losses were estimated at $720 million.

Read more

Figure 1. Aerial imagery was collected at bean emergence using a drone. All dark green rows correspond to plots with different rates of char (10, 20, 30, 40, and 60 tons/acre).
Figure 1. Aerial imagery was collected at bean emergence using a drone. All dark green rows correspond to plots with different rates of char (10, 20, 30, 40, and 60 tons/acre).

Coal Combustion Residue: A Potential Soil Amendment February 22, 2018

University of Nebraska researchers applied char, a by-product of sugar beet processing, at three sites to study its effect on soil properties.

Read more

Sugarbeet Weed. Links to full article.

Herbicide-Resistant Kochia, Palmer, and Waterhemp in the Panhandle: Distribution and Management January 8, 2018

Several field trials were undertaken in 2017 to look at options for controlling herbicide-resistant kochia, Palmer amaranth, and waterhemp in dry bean, corn, and sugarbeet. In addition over 80 kochia, Palmer amaranth, and waterhemp plants were collected for testing of herbicide resistance. Of these 50% of kochia and 13% of Palmer amaranth plants tested were resistant to field rates of glyphosate. While options are limited in the Panhandle, pairing crop rotations with herbicide programs using PRE and layby treatments provided effective control of key weed species. An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics.

Read more

Sugarbeet replanting field trial

When To Replant Sugarbeets: The Relationship Between Population, Yield, And Replant Timing January 8, 2018

An article from the Proceedings of the 2018 Nebraska Extension Crop Production Clinics: Early season stand loss from wind or frost can be severe enough to require replanting of a sugarbeet crop. Three years of field trials at the Panhandle Research and Extension Center were conducted to determine just how much stands need to be reduced to justify replanting.

Read more

Downy brome, also know as cheatgrass, in a field
Figure 1. Downy brome (cheatgrass) is greening up in a pasture in Scottsbluff County due to recent warmer temperatures; photo taken February 20, 2017. (Photo by Cody Creech)

Take Advantage of Warm Weather this Winter to Control Downy Brome February 20, 2017

Just a month after double-digit below zero temperatures, Nebraska hit an extended period of above normal temperatures, coaxing weed seeds to germinate early in many fields and pastures and creating the need to tackle the influx early.

Read more

Pages