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Showing posts from June, 2017

Small Grain Crop Survey Updates

The newest small grain scouting maps are posted on line.

Wheat:https://www.ag.ndsu.edu/ndipm/wheat
Barley:https://www.ag.ndsu.edu/ndipm/barley Grasshopper:https://www.ag.ndsu.edu/ndipm/grasshoppers


Commentary: Small Grains Disease Update 06/19/2017 
                       Dr. Madeleine Smith, Plant Pathologist 

In many areas applications are now being made for late season leaf disease, and Fusarium head blight. 

What's Out There? 

OPTIONS LIMITED FOR RESCUE TREATMENTS FOR IDC IN SOYBEANS

written by:   R. Jay Goos NDSU Soil Science Professor
published June 22, 2017 NDSU Crop and Pest Report #8

Reports of iron deficiency chlorosis (IDC) of soybeans are coming in. The unifoliate leaves of soybeans are usually green, being fed by iron reserves in the seed, but as the trifoliolate leaves appear, chlorosis often develops when soybeans are grown on alkaline, poorly-drained soils. Iron is very immobile in the plant, so the deficiency appears first on the youngest leaves. Under severe conditions, the growing point is injured, recovery is limited, and yields are devastated.

Wheat Disease Forecasting Web Site

The Wheat Disease Forecasting Web site is available for consulting to assess disease risk for:

Fusarium Head BlightTan SpotSeptoriaLeaf Rust
This valuable tool is updated with current weather conditions. The models provide a forecast for risk of developing these diseases based on the environment.

The Head Blight / Scab model can also be customized by the user to select for wheat genetics. If a variety is known to be very susceptible, susceptible or moderately resistant, the user can select that condition and get a forecast for risk based on those varietal traits. Numerous, specific varieties can also be selected for their risk forecast 

In addition, there is regular commentary on crop and disease development from:

Dr. Madeleine Smith, UMN Small Grains Pathologist Dr. Jochum Wiersma,UMN Small Grains Specialist
Both are located at the UMN Northwest Research and Outreach Center, Crookston.

There are numerous other resources provided through the disease forecasting site. Be sure to make this a m…

Wheat Crop and Pest Report through June 9

The newest small grain scouting maps are posted on line.

Wheat:https://www.ag.ndsu.edu/ndipm/wheat
Barley:https://www.ag.ndsu.edu/ndipm/barley
Grasshopper:https://www.ag.ndsu.edu/ndipm/grasshoppers

Lessons Learned from Preemergence Corn Herbicide Research this Spring

Note: The following two videos have been produced by UMN Extension Educators for Crops who are based in Rochester, MN. The message regarding preemerge herbicides is valuable. The two videos presented here provide a review of herbicide performance in corn, the first from May 27, 2017; the second is a follow-up posted June 8, 2017. I hope you find them informative when considering your own preemerge and post emerge herbicide program planning.Phillip Glogoza, UMN Extension Educator for Crops Extension Regional Office - Moorhead

by Ryan Miller and Lisa Behnken
Last week, we shared a video on Spring herbicide activity concerns due to cool and wet conditions following preemergent corn herbicide applications(Spring herbicide activity concerns -- May 27, 2017). In the video, we noted that weeds were coming through and wondered if the preemergent herbicides that had been applied would do their job. 
We are back in the research plots in Rochester and checking-in to see how things have been progress…

A Brief Review of Key Soybean Seedling Diseases

by Dean Malvick

Conditions are favorable for soybean seedling disease in many areas. Wet soil, slow emergence, and delayed planting have been favorable for seedling diseases in many areas of southern and central Minnesota. Now as the soil dries and warms up, infected plants may wilt and collapse rapidly due to damaged root systems. 

Problems with seedling disease have been reported from several areas, and more will likely be noted as plants continue to emerge. Given that seedling diseases have developed in some of the well-drained soil at Rosemount, MN, these problems are not restricted to poorly-drained fields this year. This is a good time to scout fields for seedling disease problems.
read more >>

Wheat Crop and Pest Survey Maps

The first maps summarizing current small grain crop stages, disease and insect incidence have been posted. The southern areas of Minnesota represent winter wheat, which is much further developed than the NW HRSW, oats, and the occasional rye. West central and northwest will consist mainly of HRSW and Barley (similar for North Dakota).

IPM CROP SURVEY STARTS for Wheat, Barley and other crops

We have a group of field scouts for the Integrated Pest Management (IPM) Crop Survey for 2017. Field scouts will survey wheat, barley (other small grains, too) and soybean for major disease and insect pests. The purpose of the survey program is to monitor for these economic pests and to provide pest alerts and related IPM strategies for producers and crop consultants. Field pest data that has been geo-referenced with GPS coordinates is compiled weekly and regional maps are created to show incidence and severity of pests in areas of Minnesota and North Dakota.

Maps are now being posted weekly at:
Wheat -  https://www.ag.ndsu.edu/ndipm/wheatBarley - https://www.ag.ndsu.edu/ndipm/barleySoybean -  https://www.ag.ndsu.edu/ndipm/soybeans
University of Minnesota Extension participates in the IPM Crop Survey in coordination with North Dakota State University Extension Service. In Minnesota, scouts are located in Crookston, Morris and Blue Earth, MN. Phillip Glogoza, Madeleine Smith and Jared Gop…