Crop & Pest Report
The degree-day model (NDSU North Dakota Agricultural Weather Network website) indicates that 50-90% of the females have emerged and are flying.
Time to start scouting for soybean aphids.
Weather Forecast: July 2 – July 8
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 Southwest region of North Dakota
Information from the South Central region of North Dakota.
Information from the Northeast region of North Dakota.
Question: A grower has an injection sprayer and has treated the spray solution with a water conditioner. Since I am injecting glyphosate into the water stream and then is ejected out the nozzle a second later, is the water conditioner adjuvant actually doing anything?
Question: Several of my growers have been using the formula listed in section #11 on page 72 in the 2015 ND Weed Control Guide to assess their water quality and AMS requirements:
Growers and crop consultants in the Valley are well acquainted with iron deficiency chlorosis (IDC) through years of experience.
The NDSU forecasting website indicates that most of the state is in low to moderate scab risk for susceptible varieties.
The cool, wet weather in June provided ideal conditions for the development of great looking wheat crop.
Cercospora leaf spot (CLS) (Figure 1 A, B) is the most damaging leaf disease of sugarbeet in North Dakota and Minnesota.
Planting winter wheat is probably not a priority right now. However, for those that had prevented plant acres that are considering establishing a residue crop, now is the time to act.
Soybean plants have the ability to form a symbiotic relationship with nitrogen-fixing bacteria (Bradyrhizobium japonicum), which cause the formation of nodules (small swellings) on the root system.
This week’s Good Bug Corner featured insect is the ambush bug, Phymata sp., in the family Reduviidae.
Using the sunflower GDD model from NDAWN, the accumulated growing degree days (AGDD) for leafy spurge flea beetles indicate that we can collect flea beetles (AGDD = 1,200 to 1,600) throughout the state.
Several field reports of low numbers of wheat stem sawfly adults flying in wheat have been received from NC (Ward-Mountrail Counties between Max and Parshall), NW (McKenzie County) and SW (Sioux County) areas of North Dakota (IPM survey data).
Soil samples in North Dakota indicate decreased levels of overwintering wheat midge larvae (cocoons) for the 2015 season.
What you need to know about Colorado potato beetles.