Crop & Pest Report

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North Central ND (06/29/17)

Information from the North Central region of North Dakota.

Over the last week, rainfall was widely scattered across the North Central region. NDAWN stations indicated 0-0.50 inches of precipitation since June 18.  Some areas received higher precipitation amounts (Bottineau – 0.68 inches), but occurrences were widely scattered. With precipitation and increased humidity comes some risk of small grain disease. Consider field scouting to observe for possible disease. The NDSU Small Grains Disease Model is also a helpful tool to estimate risk in an area and when field scouting may be appropriate. At last check, the model indicated most wheat varieties were under low risk; however, a few susceptible varieties may have a moderate to high risk for possible disease.

Canola flea beetle and cutworm issues are likely to start wrapping up. For canola flea beetle, last year’s adults will begin to fade. Expect 2017 adult emergence to happen later in the summer. At current staging of canola, plants are likely advanced and vigorous enough to withstand higher levels of defoliation. As for cutworm, larvae of this pest will begin to shift into the pupae stage of their life cycle. This is a non-feeding stage and damage will not occur during this stage of their life cycle.

Wheat midge may begin to surface in the short term. Small populations have been observed on the Pierce County IPM trap over the last week. 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.

TJ Prochaska

Area Extension Specialist/Crop Protection

NDSU North Central Research Extension Center

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