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Showing posts from July, 2018

Scouting a soybean field with Extension

The problem. A couple of weeks ago an email was forwarded to me from another Extension employee that had fielded a call from a local ag service provider. The service provider was seeking guidance after having visited a client’s soybean field and encountering plants exhibiting unfamiliar symptoms. What was particularly puzzling (and worrying) to the service provider was that plants appeared to have symptoms caused by Phytophthora sojae but the soybean variety had both field or adult-plant resistance and pathotype or race-specific resistance genes to P. sojae.

Bacterial cells and either spores of true fungi or fungus-like organisms like Phytophthora are individuals in a much larger population. During processes such as the genetic recombination that occurs during sexual reproduction and the random mutations that occur during cell division, new spores will be genetically different from their siblings. Some may be better able to survive and cause disease on plants that have genetic r…

Look for Wheat Stem Sawfly in NW MN Wheat Fields

Prepared by Phillip Glogoza and Jochum Wiersma 

Wheat Stem Sawfly is still infesting wheat in northwest Minnesota. Areas affected last year are now showing symptoms of this year's infestations. Wheat stems are lodging as the sawfly larvae cut the base of the stem. Polk County is the area of greatest concentration, but reports beyond the Crookston areaare also coming in.

We are asking ALL wheat growers in the northwest region to report on if they find lodged stems, their location (Latitude-Longitude or Legal description), and some estimate of cut stems per row foot. Also, indicate where in the field (usually the edge, but how far in is useful knowledge). We are trying to determine how big an area is impacted by this insect.
------------------------------------------------------------------------------ Submit your information to:
     Phillip Glogoza, UMN Extension Educator - Crops
glogo001@umn.edu

     or,

     Jochum Wiersma, UMN Extension Small Grains Specialist
wiers002@umn.edu----------…

IPM Podcast: Soybean aphid alert and IPM update

Welcome to the 5th IPM Podcast for Field Crops – this Podcast is sponsored by the UMN Extension Integrated Pest Management (IPM) Program.

During the past week soybean aphid populations have been increasing in several soybean fields, in southern and northwest production areas of Minnesota. Consequently, this is the time of year when fields should be scouted for soybean aphid, to determine if treatment is warranted.

In this week’s podcast we feature Dr. Bob Koch, Extension Entomologist, to provide an update on the status of soybean aphid infestations in Minnesota, as well as current IPM recommendations.

Soybean aphid infestations are developing: Recommendations for scouting and managing insecticide resistance
by Robert Koch (Extension Entomologist), Bruce Potter (Extension IPM Specialist), Phil Glogoza (Regional Extension Educator)

Scouting for soybean aphids in Minnesota soybean fields should be underway. While aphid populations are low in most fields, we have received reports of increasing soybean aphid numbers. In parts of central Minnesota, some of these fields are nearing threshold levels and will likely require insecticide treatment soon to protect yield. Early-planted soybean in areas with moderate rainfall this year might see significant aphid populations first. However, aphids are now spreading to other fields putting them at risk too. Below, we provide an overview of scouting recommendations and updates on insecticide resistant soybean aphids.
Scouting and threshold: How will you know if any of your soybean fields are at economic risk from soybean aphid? The decision to appl…

Soybean Aphid Surveys and What is beginning to Develop Regionally

It is that time of year when soybean aphid populations require monitoring. We have been scouting fields across the region for three weeks now. As aphids colonize fields and increase their numbers, it becomes a great time to begin scouting and start to track the population's progress over the next five weeks. The joint MN-ND soybean survey map provides a regional perspective on where early aphid activity is underway.

Zero interest loans available for farmers affected by flooding in 36 Minnesota counties and one Tribal Nation

This Minnesota Department of Agriculture news release was published by MDA media communications specialist Margaret Hart on July 6, 2018.  Please direct questions to Ms. Hart at: (651) 201-6131 or Margaret.Hart@state.mn.us

Minnesota farmers affected by the recent flooding can take advantage of a zero-percent Disaster Loan Program offered by the Minnesota Rural Finance Authority (RFA). The program helps farmers cover flood clean-up, repair, and replacement costs not covered by insurance.

The severe summer storms, which began on June 9, 2018, have caused significant flooding and damage to farm property in the Red Lake Nation and 36 counties including Aitkin, Becker, Beltrami, Blue Earth, Brown, Carlton, Cass, Clearwater, Cottonwood, Faribault, Fillmore, Freeborn, Jackson, Kittson, Lake, Lyon, Mahnomen, Martin, Mille Lacs, Mower, Murray, Nicollet, Nobles, Pine, Pipestone, Polk, Red Lake, Redwood, Renville, Rock, Sibley, Stearns, Stevens, St. Louis, Waseca, and Watonwan.

The loans can be u…

Extension plot tours to kick off in NW MN next week

White Mold Review

Source: Dr. Sam Markell, NDSU Etension Plant Pathologist NDSU Crop and Pest Report, No. 11, July 13, 2017


As we experience the current period of extensive rains and the initiation of flowering in soybean, it is appropriate to review white mold risk and management at this time. Here is a discussion from Dr. Sam Markell, NDSU Extension Plant Pathologist, published last year that will serve as a good starting point for this year.

-  Phillip Glogoza, UMN Extension Educator - Crops 
White Mold ReviewMany other factors will help determine how much of a concern white mold will be in field, such as temperature and canopy wetness during bloom, disease history, canopy density and variety susceptibility. As a result, assessing your risk for white mold is very important in managing the disease. 

Armyworm Alert !!

Reports are beginning to come in on armyworm activity in Minnesota, particularly central and now in the northwest. Scouting for armyworm should make it on the to-do list.
Most of the initial damage reports came from Bruce Potter, IPM Specialist located in Lamberton, MN (SW Research and Outreach Center). He has received calls from the central part of the state (for example, St. Cloud, Sibley Co., Wadena area). Using rye as a cover crop was a common factor in these fields. In one field where alfalfa was seeded into rye, armyworms defoliated alfalfa after the rye was killed, then marched off to nearby corn.