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Showing posts from 2015

Minnesota Soybean Variety Trials Available

The 2015 Minnesota Soybean Variety Trials are now available at:
Each year Minnesota Agricultural Experiment Station scientists conduct performance tests of public and private soybean entries at several locations throughout the state. Yield, quality characteristics, and chlorosis score evaluations of the entries are included by region. 
The summary also includes special use variety trials and variety performance in SCN-infested fields.

2015 Conservation Tillage Conference in Willmar, MN - December 15th and 16th, 2015

Reminder of registration deadline!!

Click here for More Information or to register on-line

Early bird fee is $125 for the full conference but you must register by December 1
Prices will rise to $155 after December 1, 2015. Registration is done online at or call 320-235-0726 x2001

Grain Management Vital Now

prepared by:    Kenneth Hellevang, Ph.D., P.E.
                        Extension Agricultural Engineer, Professor
                        North Dakota State University

After enjoying a generally nice harvest season this year, now is the time for upper Midwestern producers to focus on managing the grain in storage, North Dakota State University's grain handling and storage expert says.

Fair Farmland Rental Agreements to be Addressed in 44 Statewide Workshops

Source: David Bau, University of Minnesota Extension Educator
Meeting Locations in northwest and west central Minnesota are: 11/23/15Thief RiverNorthland Community & Technical College - Auditorium
1101 Hwy 1 East, Thief River Falls, MN 567012:00 PM11/23/15AdaTubby's Tavern
415 W. Main St., Ada, MN 565109:30 AM11/24/15McIntoshMcIntosh Community Center
240 Cleveland Ave. SW, McIntosh, MN 565569:30 AM11/24/15MoorheadMN State Community & Technical College- Moorhead
Rm A117 & A119
1900 28th Ave. S., Moorhead, MN 565602:30 PM12/2/15BreckenridgeGrace Lutheran Church
1100 Main Ave N., Breckenridge, MN 565209:30 AM12/3/15MorrisWest Central Research and Outreach Center
46352 State Hwy 329, Morris, MN 562679:30 AM12/2/15Fergus FallsOttertail County Government Service Center
500 Fir Ave. W., Fergus Falls, MN 565371:30 PMfor additional meeting locations

Considerations of Reconditioning Too-dry Soybeans and other Grain

prepared by:    Kenneth Hellevang, Ph.D., P.E.
                        Extension Agricultural Engineer, Professor
                        North Dakota State University

Producers may want to recondition soybeans that were harvested at lower moisture contents to bring the moisture content up to the market standard of 13 percent. On a 40-bushel-per-acre yield, harvesting soybeans at 9 percent moisture content, rather than 13 percent, is equal to 1.8 bushels of lost weight per acre. At $9 per bushel, that is $16.20 per acre.

Abnormalities of Corn Ears

Farmers frequently find abnormal corn ears in fields affected by major stress such as drought, temperature extremes, disease injury, insect injury or misapplied chemicals. Often, these abnormalities adversely affect yield and grain quality. This poster describes symptoms and causes of ten types of abnormal corn ears. The purpose of the poster is to help corn growers and agricultural professionals diagnose and in some cases manage various ear disorders.  
Click here to download a copy of this poster from Ohio State University. 

Also, there is an accompanying web page that describes over 30 additional types of abnormal corn ear development and strategies for managing them. This information can be accessed at:

2015 Conservation Tillage Conference - December 15 - 16, 2015 | Willmar, MN

Are You Happy with Your Weed Control in Soybeans this Fall?

by Lisa Behnken, Extension Educator, Fritz Breitenbach, IPM Specialist SE Minnesota, Jeff Gunsolus, Extension Agronomist, Weed Science, and Phyllis Bongard, Content Development and Communications Specialist, University of Minnesota
Figure 1. Weed escapes in soybean treated with a single preemergence herbicide application of Outlook and Pursuit on May 5. Photo taken August 6.
With waterhemp becoming more widespread throughout the state and glyphosate resistance increasing, how do your soybeans look this fall? If they look like Figure 1, it may be time to change your weed control strategy.

One strategy for dealing with glyphosate resistant waterhemp is to layer soil residual herbicides. This approach is being evaluated in Rochester, Minnesota and includes a number of residual herbicides in single and two-pass applications. The herbicides in the trial include 1) Dual (s-metolachlor), 2) Outlook (dimethenamid-P), and 3) Warrant (acetochlor). They were selected because of their known effectiv…

What is the Cost of Late Season Waterhemp?

Just a reminder of why poor weed management can get out of control quickly.

Do the math ...

Take advantage of window to control weeds following small grains harvest

by Dr. Tom Peters, Extension Sugarbeet Agronomist, Dave Nicolai and Doug Holen, Extension Crop Educators

Recent travel across Minnesota highlights that it is small grains harvest time. Thrashed fields have a clean look, especially from the highway. However, closer examination reveals a great number of weeds, especially waterhemp, emerging from the stubble. More swathing due to uneven harvest maturity and significant lodging resulted in weeds getting a head start this season.

What to consider when treating a soybean field more than once for soybean aphid

by Robert Koch (Extension Entomologist), Bruce Potter (IPM Specialist), Ian MacRae (Extension Entomologist), and Ken Ostlie (Extension Entomologist) 

A number of fields in southwestern Minnesota have reported unexplained failure (poor performance) of recent insecticide treatments and will require additional applications to control existing populations.

If a field needs to be treated more than once in the same year, remember the potential for development of insecticide resistance (U of MN fact sheet on insecticide resistance). Do not reapply the same insecticide mode of action (insecticide group). 

It's Time to Keep Track of Soybean Aphid Populations in Your Fields

Post was updated July 20, 2015

Soybean fields are being scouted in the region, with particular emphasis on soybean aphid and how populations are establishing and increasing.

Though field populations of aphids are quite variable, populations certainly are increasing as we would expect for this time of year. The majority of the fields we've scouted in the past two weeks were averaging under 20 aphids per plant HOWEVER we did have a few fields average from 50 - 60 aphids plant. In fields with these greater averages, the percent plants with aphids present were in the 90+ % range. Also within those greater number fields, we are finding randomly selected plants reaching into the 200+ aphid counts, though those plants represented only about 15% of the total plants randomly selected at individual sites.

The Downside of Insurance Insecticide Applications for Soybean Aphid

by Robert Koch (Extension Entomologist), Bruce Potter (IPM Specialist), Jeff Gunsolus (Extension Weed Scientist) 

For soybean aphid management, we encourage you to rely on scouting (actually getting into the field and looking at plants) and the validated economic threshold (average of 250 aphids per plant, aphids on more than 80% of plants, and aphid populations increasing) to determine when to apply insecticides for soybean aphid (see "Scouting for soybean aphid"). The threshold number of aphids is below the number required to cause yield loss and allows time to apply an insecticide before economic loss is incurred. However, you might be tempted to apply insecticides for soybean aphids at low population levels or without regard to the size of the aphid population in field, just in case you might have a problem. These "insurance" applications of insecticides can have negative impacts.

Armyworms in small grains

from Dr. Ian MacRae, UMN Entomologist, NWROC - Crookston


We are receiving calls regarding armyworms in small grains in NW MN.

At this time they are small larvae (1/2"-3/4" long) and feeding in the lower foliage.  Scout for armyworms at grassy margins of the fields, low, weedy areas in fields or in lodged grain; populations are more likely to develop in these areas first.  Armyworms prefer the edges of leaves first and are messy, wasteful eaters.  They generally retreat during the day under soil and plant residue on the ground and feed more often beginning at dusk, it’s easier to scout for armyworm damage than the armyworms themselves.  Look for leaves that have been notched/cut, partially eaten leaf material on the ground, and small round pellets (armyworm frass, i.e. poop) near the base of the plants.

Iron Deficiency Chlorosis Refresher by Dr. David Franzen, NDSU Extension Soil Specialist

Following the significant rains of the past month/weeks, yellow soybeans are appearing across the region. So, rather than an entomologist like myself reviewing Iron Deficiency Chlorosis (IDC) for you, I have provided a write-up from Dr. Dave Franzen, NDSU Extension Soil Specialist, who does a much better job summarizing the topic than I could.

Phillip Glogoza

Source:NDSU Crop and Pest Report Newsletter
Issue #9                                 July 2, 2015 

Growers and crop consultants in the Red River Valley are well acquainted with iron deficiency chlorosis (IDC) through years of experience. Not everyone in the Valley (few, really) follow the best advice in dealing with it, but many growers have made great strides in the past 20 years in being able to live with it. A fully explained narrative of the causes of IDC in soybean is available in the soyb…

Subscribe for Postings to arrive by E-mail

When I moved the Cropping Issues in Northwest Minnesota on-line newsletter to the blog format, I have sought the best way to deliver updates to interested readers in a way that is efficient, quick and not too annoying. I have suggested using RSS feeds, subscribing to automatic updates (Atom), and my e-mailing a compilation of recent posts into a Table of contents with links. Each has had weaknesses in my opinion.

The best I have come up with at this point is a better performing e-mail option which is provided at the bottom of the right column and is the Follow By E-Mail option.

Simply enter your e-mail, click on subscribe and complete the submission process as directed through the pop-up window that will appear. Enter the text provided so the software knows you are a real subscriber.

I set this up a number of weeks ago. I have been very pleased with its performance and reliability in forwarding the postings. I also like the format it provides. When multiple posts are made in a given 24-h…

Post-Anthesis Foliar N Applications to Boost Grain Protein in HRSW.

Interest in improving grain protein in hard red spring wheat (HRSW) with in-season applications of nitrogen (N) fertilizer is on everyone mind, since protein premiums and discounts are rumored to be even greater this year than last. 

A "Cliff Notes" summary of foliar feeding of N immediately after anthesis can be found here.  The original Minnesota Crop News article, published in 2006 and reprinted in 2014, explaining the practice in more detail can be found here.

information provided by Jochum Wiersma 

Soybean aphids on Minnesota soybean: They’re out there, but don’t panic

by Robert Koch, Extension Entomologist

Soybean aphids can now be found in soybean fields in southern Minnesota. There are also reports of soybean aphids from west central Minnesota. However, there is no need to panic. The percentage of plants infested and number of aphids per plant are still low (far below economic levels). Furthermore, aphid predators, such as lady beetles, have been observed feeding on soybean aphids in some fields.  As we get into late June, you may want to begin checking soybean fields for aphids.

Alfalfa Weevil Population Progress in WC and NW Minnesota

Alfalfa fields in west central (WC) and northwest (NW) Minnesota have been sampled for alfalfa weevil over the past 3 weeks. Though the spring started off warm and we anticipated early development of weevil populations, the cool wet conditions slowed development in the region. Currently, weevil populations are predominantly in the 2nd and 3rd larval stages in these areas (see maps). Very few 1st stage larvae are present (< 3% of the population). Larvae should be moving to the the 4th stage in these regions soon.

When is it too Windy to Spray?

by David Nicolai & Lizabeth Stahl, Extension Educators - Crops and Dr. Dean Herzfeld, coordinator, Pesticide Safety & Enviromental Education
The corn and soybean post-emergence crop protection application season is here. Corn & soybean growers will target post-emergence herbicide applications by the V4 growth stage in soybeans and the four leaf stage in corn to limit yield reductions due to weed competition. Targeting applications by these crop stages will also help ensure applications are made before weeds exceed three to four inches in height, which is the maximum height on many herbicide labels for most effective control. 

Postemergence Weed Control Strategies in Sugarbeet

Tom Peters, Extension Sugarbeet Agronomist, Univ of Minnesota / North Dakota State University

Sugarbeet are actively growing following ample precipitation the past three weeks and finally some sun and heat. Unfortunately for Farmers, so are the weeds. Farmers should be scouting their fields and preparing for postemergence weed control. With this in mind, I offer the following suggestions:

Aster Leafhoppers Arrive – but this isn’t Déjà vu all over again

Back in 2012, a very significant migration event involving aster leafhopper occurred in early May. The Aster leafhoppers settled in grasses, particularly wheat fields when they first arrived. Weather events of the past 10 days have also been conducive for bringing in leafhoppers from the southern US into our region, but not even close to the numbers the appeared in 2012. Since they have been reported we want to make you aware of them.

Multiple Weather Related Articles Posted

Due to the wild, fluctuating weather patterns that have hit over the past week, there are a number of published articles by UMN Extension Specialists that address information on effects of frost or cold temperatures, what soil moisture levels interaction with pre-emerge herbicides, and pest management questions that are starting to pop up around the region.

There are multiple ways to receive news updates through extension. Currently, the Minnesota Crop News is becoming one of the quickest venues to receive updates on cropping issues at the statewide level. Links to current articles are listed in the right column. We would also encourage you to subscribe by e-mail to receive these notices as they are published. 

follow this link to subscribe to Minnesota Crop News


5-20-15  comments from Bruce Potter,
Extension IPM Specialist,
                                         SWROC Lamberton, MN 

"I am starting to receive calls and photos of …