Crop & Pest Report
During the 2010, 2011, and 2013 I estimated N losses in high clay soils based on my ongoing corn N rate project ranging from about 100 pounds per acre in 2010 to nearly 150 pounds per acre in 2011 and 80-100 pounds per acre in 2013. This spring, I established two multi-treatment corn N rate/side-dress N rate studies.
Goss’s bacterial wilt and leaf blight of corn was found in northwest McHenry County last week indicating that now is a good time to start scouting for this disease.
In the last several weeks, clubroot has been found in several fields in the NE part of the state.
The cool temperatures these last few mornings got me wondering about where the corn crop is in terms of development and the prospects for the rest of the season with regards to maturity and moisture levels at harvest.
Recently we had storms move through parts of the state with high winds and in a few cases intense rainfall.
Do-it-yourself (DIY) tiling is an option that is being considered by many farmers/ landowners.
Two insects have been reported clipping silks in field corn – red-headed flea beetles (Systena frontalis) and sap beetles or picnic beetles (Glischrochilus quadrisignatus).
Soybean aphid infestations are spotty this year. Some fields in the Red River Valley have hot spots of aphids and have reached the economic threshold level requiring an insecticidal treatment.
Banded sunflower moths continue to be trapped at high numbers in IPM scout pheromone traps. However, trap captures for the migratory sunflower moth are low throughout the state.
There are two Crop and Pest Reports left for 2014!
Maps detailing corn accumulated daily growing days, percent normal rainfall, departure from normal average air temperature, and accumulated wheat growing degree days.
Information from the South Central region of North Dakota.
Information from the Northeast region of North Dakota.
Information from the North Central region of North Dakota.
The following was adapted from a journal article submitted by Dr. Rod Lym, NDSU Weed Scientist: A journal article reported that a substantial portion of grizzly bear’s diet was composed of dandelion and other plant matter that may be viewed as “weeds”.
The 2nd Annual Soil Health Field Day will be held on August 21 in Mooreton, ND. This year, we will feature some of the primary topics from the Crop and Pest Report, including but not limited to, using cover crops effectively, tools for salinity management, whole systems approaches for management and erosion control.
With the wide range of planting dates this year, wheat is flowering at different times. If you have late-planted spring wheat that is approaching flowering, use the scab risk models to determine if a fungicide application is needed.
Over the past two weeks, the IPM scouts visited 181 wheat fields and 8 barley fields. Scab was reported in 41 wheat fields and scab incidence ranged from 1% to 51% within those fields.
As sunflowers begin to bloom it is important to scout for sunflower rust. Sunflower rust was found on volunteers and wild sunflowers early in the growing season, and environmental conditions have been very favorable for rust development, making disease development likely.
In the last week I have been receiving questions about dry bean rust, and I encourage growers to scout for the disease.