Crop & Pest Report


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North Central ND (07/06/17)

Information from the North Central region of North Dakota.

Drought continues to grasp many areas of the state over the past week with only scattered showers occurring during that time. Here are some of the precipitation totals for the week of June 25th across the North Central region: Minot – 0.17 inches; Berthold – 0.06”; Bottineau – 0.04”; Garrison – 0.03”; Karlsruhe – 0.44”; Mohall – 0.08”; and Rugby – 0.24”. Warm and dry conditions (80s and 90s F) are on tap for next week. These conditions should not promote disease in area crops, however, the NDSU Small Grains Disease Model is a helpful tool to estimate risk in a given area and when field scouting may be appropriate. At this time, risk appears low.

Small grain aphids have been observed in the area. Small populations were noted in Sheridan and Ward Counties. Though populations have been hit and miss, economic thresholds are as follows. For English Grain Aphid, Greenbug, and Bird Cherry Oat Aphid – threshold is met when 85% of the stems contain more than 1 aphid or when 12-15 aphids per stem are observed. Field scouting should be used to monitor populations. If thresholds are met or climb above between the elongation and heading stages in wheat, economic injury may occur. Please refer to the 2017 North Dakota Field Crop Insect Management Guide for more on thresholds and possible treatments.

Furthermore, wheat midge may begin to surface in the short term. Small populations have been observed in McLean, McHenry, Pierce, and Renville Counties as observed through the IPM scout. Economic thresholds can vary based on crop value and wheat variety. Please refer to the NDSU Wheat Midge Extension publication for more information regarding economic thresholds.

The NCREC Field Day is fast approaching. In 2017, Field Day will fall on July 19th. Activities will begin at 9 am CDT with a focus on pulse crops. We hope you can join us!

TJ Prochaska

Area Extension Specialist/Crop Protection

NDSU North Central Research Extension Center

This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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