Ag PhD’s Crop Scouting Reports


Check Below for the Daily Crop Scouting Report for Your Area.

Crop Reports are updated daily Monday through Friday, May 1 – July 15.  From July 15 – August 31, the report will run weekly.

South Dakota

Aberdeen, SD

With the continuous dry conditions, the grasshoppers are getting numerous in many areas. Be sure to check your fields and spray with an insecticide if needed. As the grasshoppers get wings, it will take the full labeled rate to get them.

Randy Williams

Photo: Randy Williams



Baltic, SD

Soybean aphids have been observed at threshold levels in almost every field now. The soybeans are fairly tall now, and in a lot of cases, the rows are shaded. Using Lorsban would be a must in order to penetrate the canopy and get at the insects that are down there. Adding a pyrethroid chemistry like Warrior or Asana would help with control and would also provide some residual.

Michael Drey

Photo: Mike Drey, Wes Jepsen, Tyler Koenig, Rob Fritz & Lee Fischer



Centerville, SD

Aphid numbers continue to build and are at treatment levels. We have also received our first reports of Goss’s Wilt in the area. Watch your fields for this disease, and keep records for future crop planning because this is a bacterial disease that cannot be treated.

Steve Lee

Photo: Travis Boerger, Mike Kiolbasa & Steve Lee


Freeman, SD

Soybean aphid numbers continue to increase, with reports of as many as 100 per plant in spots. A few cases of spider mites in corn have also been reported.

Chad Waldner

Photo:  Chad Waldner




Gettysburg, SD

Check your sunflower fields for weevils. A lot of people are using an insecticide with a fungicide this year and seeing good results.

Kyle Hawkinson

Photo: Colby Kaup & Kyle Hawkinson



Huron, SD

We are seeing aphids in the soybean fields. Watch your fields closely. In this kind of weather, we can see a rapid increase in aphid numbers. Silencer at 3.8 oz. per acre will give good control of these pests.

Norland Hofer

Photo: Alan Williams, Norland Hofer & Jason Leyendecker



Kimball, SD

There are not many aphids in our area yet. If you do need to spray, remember that Roundup is only labeled on soybeans up to the R2 stage (full flower). Once your soybeans are forming pods, you are off label.

Mike Erickson

Photo: Joe Fox & Mike Erickson


New Underwood, SD

Lots of rain in western South Dakota really slowed wheat harvest. Many will be going back in to plant wheat within just a few weeks after harvest. Look at using pre-emerge herbicides like Pre-Pare and Olympus to suppress grasses and control some broadleaf weeds.

Dane Oman

Photo: Dane Oman



Roscoe, SD



Watertown, SD

There is no huge outbreak of aphids in the Watertown area, but the conditions are right, so keep scouting.

Russ Werning

Photo: Jack Beutler & Russ Werning



Breckenridge, MN

With warmer temperatures coming up this week, still be on the lookout for any aphids and spider mites in the bean fields. Controlling either of these pests at an earlier stage is better than waiting until the last minute to try to control them.

Jon Koenig

Photo: Jon Koenig & Tammy Buchholz



Fairmont, MN

Many soybeans in the area are being staged, but in my opinion, they are being determined later than what they really are. When staging, remember that you need to be concerned with the upper four nodes on the main stem. When pods develop along those nodes, that is how the soybean plant stage is determined.

Mike Bates

Photo: Israel Winter, Hans Hinrichsen, Mike Bates & Steve Draper


Hancock, MN

While you are out checking for soybean aphids, bring your shovel. It’s a good time to carefully dig up some roots on soybeans. Nitrogen-fixing nodules should be pink inside. I am finding a dozen or so nematode cysts on roots of tolerant varieties. I would expect many more nematode cysts on susceptible varieties and some visual stress to the plant. First, scout those areas that historically yield less and where the rows have not filled in as well. To get a better idea on severity, a soil sample needs to be sent to a lab.

Adam Gibson

Aphid numbers in the area are very spotty. Some areas sprayed a week or more ago, while other areas still have low numbers. Just make sure to keep scouting fields every couple of days to monitor how numbers are increasing or decreasing.

Nathan DuHoux

Photo: Nate DuHoux & Adam Gibson


Janesville, MN

We are finding fields with large aphid populations. If you find large numbers, you can apply Silencer at 3.2 oz. per acre or Lorsban at 1 pint per acre.

Riley Carlson

Photo: Riley Carlson & Todd Traynor



LeRoy, MN

Soybean aphids have been spotty. Some fields require treatment, and some don’t. With this weather, look for aphid populations to increase.

Grant Lunning

Photo: Dave Lunning & Grant Lunning


Marshall, MN

Aphid numbers in the Marshall to U.S. Highway 14 area are seeing growth with concentrated hot spots in some areas. Keep scouting these fields in the days to come. Additionally, do not be afraid to add a fungicide with your insecticide application.

Jeremy Jensen

Photo: Jeremy Jensen, John Wiese, Mike Homandberg & Dave Timmerman



Olivia, MN

Spraying continues for western corn rootworm beetle in the area. We have also been finding some aphids and treating those fields with counts of more than 50-100 per plant. If treating fields, it’s a great opportunity to add a micronutrient package along with a fungicide. Talk with your agronomist to customize a program for your operation.

Troy Walker

Photo: Troy Walker & B. Sham Moteelall


Ulen, MN

When putting away your sprayers, remember to clean them out with a healthy amount of Incide-Out.

Kevin Harder

Photo: Greg Peterson & Kevin Harder



Winthrop, MN

Make sure to be using aphid population counts and soybean maturity to decide when to spray aphids and not the calendar. Silencer at 3.84 oz. is a good option.

Roger Elliott

To the south and west of Winthrop, it has been dry, and there have been a few reports of spider mites. Fanfare, Sniper, and Brigade are some generic bifenthrin products that will have some residual and will be good products for aphids, too.

Dave Worth

Photo: Dave Worth, Roger Elliott & Dean Christiansen


Great Falls, MT

For an effective post-harvest burndown to kill kochia, 32 oz. of PowerMax, 1 quart per 100 of NIS and 7.5 gallons of water along with 4 oz. of Banvel will do a good job. While kochia is Roundup resistant in the Dakota’s and extreme Eastern Montana, it doesn’t appear to be here yet.

Brian Schlagel

Photo: Brian Schlagel & Shawn Ostberg



Sidney, MT

The hail has become a bad habit with multiple occurrences in the area. Many acres have been lost, and many farmers are thinking about winter wheat due to the hailed crop and plentiful moisture. Now is a great time to soil sample and consider seed treatment and a pre-emerge herbicide such as Pre-Pare.

Patrick Turner

Photo: Barry Holzworth & Paul Gebhardt


Rockwell, IA

Keep scouting your fields. We’re watching for aphids in soybeans. Adult rootworm beetles are present with heavy pressure in corn, so make sure you’re using insecticides in these fields.

Tim Nuehring

Photo: Tim Nuehring & Lynn Weier




Sheldon, IA

A few hotspots of aphids have been found, but nothing widespread. We will continue to monitor numbers as the month progresses. Continue to scout until the beans start to change color.

Brent Fedders

Photo: Brent Fedders & Adam Sauer



Buhl, ID

Make sure to keep scouting pinto beans for late insect damage. Use an appropriate insecticide at labeled rates if you find any problem pests.

Mark Zacherisen

Many farmers are just finishing their third cutting of alfalfa. Wheat and barley harvest is wrapping up with reports of below average yields due to disease issues and excessive heat units. Corn is filling out well, with farmers preparing to harvest as early as the end of August and continuing through September and into October.

Phillip Zamora

Photo: Mark “Zach” Zacherisen & Van Wiebe



North Dakota

Hillsboro, ND

Wheat is starting to come off. Growers are getting lower yields than expected because we were pretty optimistic in early July, but a lot did not fill due to heat stress.

Ryan Pierce

Aphid and spider mite pressure has been light, but scouting fields would be a good idea with temperatures climbing. An insecticide should still be applied if insects are present.

Brian Josewski

Photo: Brian Josewski



Hurdsfield, ND

Scout your sunflower fields. We are finding bugs and rust. Now may be a great time to hire an aerial application for both.

Chad Weckerly

Photo: Melissa Graves, Chad Weckerly, Jeri Engstrom




Lisbon, ND

As we get farther into the growing season, remember that many chemicals carry a pre-harvest interval. Always check the label to ensure you are not spraying the chemical too late into the season.

Spencer Schultz

Photo: Jon Leadbetter, Spencer Schultz &  Brian Weight




Mohall, ND

For those getting ready to use an insecticide on sunflowers, Asana XL is a great choice at 7 oz.

Jason Huber

Pea desiccation is starting. Use 1.5 pints of Gramoxone and 1.5 pints of crop oil for a post-harvest interval of 7 days.

Joe Ramer

Photo: Jason Thiel, Jason Huber & Joe Ramer


Pembina, ND

Continue to scout fields for soybean aphids. We’ve been finding very few aphids but have recently been hearing reports of populations on the rise. We’ve still got a few weeks to protect these beans from aphids, so if aphids numbers are growing, I would treat fields with a pyrethroid product like Silencer. By using a high rate (3.8 oz. per acre), you should get good protection from aphids for the rest of the season.

Blake Younggren

Photo: Blake Younggren, Bryan Younggren & Jon Warner



Wilton, ND

Soybean aphids have seemed to stay away for the most part. Continue to scout. If thresholds are reached, use 3.2 oz. of Declare or Silencer by ground or air.

Jamie Schurhamer

Photo: Jamie Sheldon & Jamie Schurhamer





Bertrand, MO

Recently, we have been applying fungicide and insecticide with the area aerial crop services on soybeans. A fungicide like Stratego YLD at 7.5 oz. per acre or Quilt Xcel at 10 oz. per acre might be a good choice. An insecticide like Declare at 1.5 oz. per acre or Silencer at 3.5 oz. per acre can be applied with the fungicide. Insect pressure may determine the use rate on your insecticide.

Albert Duenne

Photo: Albert Duenne & Darryl Wolford



Farmington, WA

With harvest in full swing, it might seem difficult to set plans for the fall planting season. But remember that this is a good time of the year to be pricing out what you will need for planting winter wheat, which will be going in the ground before you know it!

David Sass

Photo: Jeff Bruce



Quincy, WA

Now is a good time to be evaluating corn performance. A person can find out if they have any deficiencies in watering and plant nutrition by taking a little walk. Lower leaves will show shortages of nitrogen and potassium, as well as water. Often, a hybrid is blamed for bad performance when one of these factors is actually the culprit. Don’t throw the baby out with the bathwater; you might already have a winner and didn’t know it.

Sam Krautscheid

Photo: Ken Wiser, Ty Whitaker & Sam Krautscheid