Skip to main content


Field Notes talked seedling disease and small grains in a wet spring

Phyllis Bongard, Educational content development and communications specialist, Jochum Wiersma, Extension small grains specialist, and Dean Malvick, Extension plant pathologist An early, but rainy start to the 2024 growing season resulted in a wide range of planting dates and associated issues. Drs. Jochum Wiersma, Extension small grains specialist, and Dean Malvick, Extension plant pathologist, joined moderator Anthony Hanson, Extension educator-crops, to discuss the issues to watch for in the May 22 session of Field Notes. Small grains update The earliest small grains seeding dates ranged from late March in southern Minnesota to the second week in April in northern Minnesota. Then weather delays limited planting opportunities to the 3rd week in April and the 2nd week in May in the northern region of the state. Overall, small grain stands are very good, with the earliest seeded grains well into the tillering stage. Winter rye seems to be ahead of most years, having reached heading in
Recent posts

MN CropCast: Dealing with early season weather concerns for the 2024 corn and soybean crops

In episode 35 Dave Nicolai and Seth Naeve chat with Dr. Jeff Coulter, University of Minnesota Extension corn agronomist, about early season precipitation, soil crusting and plant assessment of the 2024 corn crop in Minnesota. In addition, Seth, U of MN Extension soybean specialist, discussed how these same factors can affect soybean fields this spring. Jeff discussed delayed corn planting dates, desired soil conditions, corn planting populations and when to change corn maturity hybrid planting dates. Seth also discussed in detail the results of delayed soybean planting date research and recommendations for soybean planting populations. Both Jeff and Seth referenced the University of Minnesota Extension Crop Management web pages for corn, , and soybeans, , as excellent starting points to review guidelines, best practices and potential issues for planting as well as seeding rates based on Uni

Statewide best management practices for nitrogen: A valuable resource for Minnesota growers

In this episode of the Advancing Nitrogen Smart series, we’re talking in-depth about nitrogen best management practices. How are BMPs calculated, and how do they change over time? What should growers keep in mind regarding regional adjustments in the BMPs? What kinds of risks are the BMPs designed to address? How do the 4 Rs figure in to Minnesota's nitrogen best management practices? TRANSCRIPT   Guests: Daniel Kaiser, Extension nutrient management specialist (St. Paul) Brad Carlson, Extension educator (Mankato) Additional resources: Nitrogen Fertilizer Best Management Practices for Agricultural Lands Fertilizing Corn in Minnesota --- For the latest nutrient management information, subscribe to the Nutrient Management Podcast wherever you listen and never miss an episode! And don't forget to subscribe to the Minnesota Crop News daily or weekly email newsletter, subscribe to our YouTube channel, like UMN Extension Nutrient Management on Facebook , follow us on Twitter , an

Best practices for using glufosinate (Liberty) herbicide

Navjot Singh – Weed Science Graduate Student, UMN, Debalin Sarangi – Extension Weed Scientist, UMN Liz Stahl – Regional Extension Educator – Crops, UMN Joe Ikley – Extension Weed Scientist, NDSU Tom Peters – Sugarbeet Extension Agronomist, NDSU/UMN Glufosinate is a non-selective, contact herbicide (site-of-action Group 10) used in glufosinate-resistant corn, soybean, and canola. Herbicides like Liberty 280 SL, Cheetah, Finale, Interline, and Sinate contain glufosinate, with Liberty 280 SL being the most commonly used product among them. In addition to burndown applications before planting, glufosinate is mostly used for over-the-top applications in LibertyLink crops. However, label restrictions for rate and crop stage should be followed. The herbicide-resistant trait choices available for row crops in Minnesota and North Dakota are summarized in this article . Figure 1. A recent waterhemp population survey from Minnesota shows the presence of glyphosate -resistant populations. The col

Alfalfa Harvest Alert for May 21

Taylor Herbert, UMN Extension educator-crops, Wright, McLeod, and Meeker Counties. or (612)-394-5229 The Alfalfa Harvest Alert Project/ Scissor Cut project continued this week. Some alfalfa fields in the southernmost areas of central Minnesota have moved from the vegetative to bud growth stages, resulting in a decrease in forage quality. Some lodging was observed after the most recent rains, but fields still appear to be in great condition.  Relative Feed Value (RFV) and Relative Feed Quality (RFQ) are used by dairy and other livestock producers to determine harvest timing to fit their needs. The Predictive Equation for Alfalfa Quality (PEAQ) uses the stage of maturity and height of the tallest stems to estimate Relative Feed Value (RFV). Quality is lost in harvest, wilting, and storage of forage, so it is recommended to harvest around 15 to 25 RFV points higher than what is desired for feeding. As a reminder, the goal of this project is not to try and name the exact

Follow acetochlor BMPs to tackle surface water detections

Naworaj Acharya, Minnesota Department of Agriculture and Tana Haugen-Brown, Extension educator and Co-coordinator - Pesticide Safety and Environmental Education Acetochlor products like Tripleflex, SureStart, Warrant, and Harness are commonly used in Minnesota to control weeds in crops like corn, soybeans, and sugarbeets. As sales continue to increase, acetochlor is being detected at higher concentrations in many rivers in southcentral and southwestern Minnesota.  If acetochlor levels exceed state water quality standards, the Minnesota Pollution Control Agency may designate the waterbody as impaired, triggering the development of a response plan to promote responsible pesticide use and possibly impose use restrictions. Currently, only Silver Creek in Carver County is impaired by acetochlor.  The Minnesota Department of Agriculture (MDA) advises following the Water Quality Best Management Practices (BMPs) for Acetochlor and considering alternative herbicides to safeguard water quality.

Alfalfa harvest alert for May 17

Taylor Herbert, UMN Extension educator-crops, Wright, McLeod, and Meeker Counties. or (612)-394-5229 The Alfalfa Harvest Alert Project/ Scissor Cut project continued this week. The first field in Sibley County was harvested on May 12th and some fields in Stearns, Morrison, and Benton Counties were sampled for the first time. Compared to samples taken earlier in the week, samples taken over the last couple days have reduced Relative Feed Values (RFV) but biomass yield has increased. This is the trade-off that the Alfalfa Harvest Alert Program is trying to capture. Farmers need to make a decision to maximize both yield and quality to fit the needs of their operation. As a reminder, the goal of this project is not to try and name the exact day of harvest. Rather the goal is to encourage growers who are busy with management of other crops to be more strategic with hay crop harvest as it relates to their needs. How to get harvest alert data The May 17  Alfalfa Harvest Ale