Blog

Bob Hartzler
October 19, 2019 8:58 AM

Combines are the most important seed dispersal mechanism for weeds in our cropping system.  While a small amount of seed may leave the field with grain, most weed seed that enter the combine with the crop are either spread throughout the field or carried to other fields. Harvest weed seed...

Weeds

Charles R Hurburgh
October 17, 2019 1:41 PM

Rebecca Vittetoe
October 17, 2019 1:41 PM

Meaghan Anderson
October 17, 2019 1:41 PM

Temperatures fell into the low 30’s and upper 20’s in most of Iowa over the weekend of October 11-13.  Because of the very late planting season, some crops were immature enough to be injured by the freezing temperatures. This ICM Blog will address frost damage concerns to soybeans.  

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Crop Production, Grain Handling and Storage

Ethan Stoetzer
October 15, 2019 10:36 AM

Iowa State University Extension Plant Pathologist Daren Mueller will be featured on a North Central Climate Collaborative (NC3) webinar later this month. The focal point of the discussion will be around how climate change is impacting disease expression in both corn and soybean in the North...

Plant Diseases

Rebecca Vittetoe
October 11, 2019 3:09 PM

The weather forecast is calling for temperatures to dip below or close to freezing this weekend across the state of Iowa. What does this mean for forage crops, particularly forage crops such as sudangrass, sorghum,  and sorghum sudangrass hybrids?

A frost event, even a light frost, with...

Crop Production

Alison Robertson
October 11, 2019 7:16 AM

Tar spot is the latest new disease of corn to be observed in the U.S. The disease was first observed in Indiana in 2015. In 2016, it was found in eastern Iowa, Illinois, Michigan, Wisconsin and Florida. Last growing season, the disease caused significant damage to corn in northern Illinois,...

Plant Diseases

Brian Lang
October 10, 2019 1:24 PM

How late can you make the last cutting of alfalfa? Do you cut now or wait until a killing frost? This ICM Blog will provide some guidelines to help you determine when you should make that last cutting and other management considerations when taking the last cutting for the year.

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Crop Production

Charles R Hurburgh
October 9, 2019 3:55 PM

An Iowa farmer sent me an email in anticipation of the freeze this weekend and I suspect many farmers are in the similar position of having mature crops with replant that may not be mature yet. Read more about my thoughts on how to handle this situation below.

Question:...

Crop Production, Grain Handling and Storage

Rebecca Vittetoe
October 8, 2019 1:29 PM

Harvest is off to a slow start across the state. High moisture grain, crop maturity, and ear rots and stalk rots are some of the topics ISU Extension and Outreach field agronomists have been focusing on. Read on for more about what’s happening in specific regions of the state.

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Crop Production

Mark Licht
October 7, 2019 3:25 PM

Charles R Hurburgh
October 7, 2019 3:25 PM

A portion of Iowa’s corn crop is likely to experience a frost before naturally reaching maturity as a result of cool temperatures later this week. Natural maturity is often determined when a black layer is formed at the kernel tip. At this timeframe grain moisture is typically 28–35% moisture....

Crop Production, Grain Handling and Storage

Rebecca Vittetoe
October 4, 2019 8:30 AM

Meaghan Anderson
October 4, 2019 8:30 AM

Proper planning and preparation are needed to successfully improve pastures with either late winter frost seeding or no-till renovation with interseeding next spring. This ICM Blog post will discuss what you should be doing now to prepare for pasture renovations in 2020.

Crop Production

Meaghan Anderson
October 3, 2019 12:08 PM

Rebecca Vittetoe
October 3, 2019 12:08 PM

Fall is a great time to take soil samples. Soil testing is the only way to determine soil nutrient levels, and the results of these tests can help make critical management decisions for the next growing season. This article will discuss when to soil sample, different soil sampling methods, how...

Soil Fertility

Bob Hartzler
September 30, 2019 1:00 PM

Meaghan Anderson
September 30, 2019 1:00 PM

Prashant Jha
September 30, 2019 1:00 PM

The spread of multiple-resistant weeds threatens Iowa’s production system. In order to slow the expansion of resistance, greater diversity in weed management is necessary.  An October 21 workshop will discuss one potential alternative weed management tool that is used in other parts of the world...

Weeds

John Sawyer
September 25, 2019 3:40 PM

If you would like to learn more about current soil fertility issues and research being conducted at universities across the North Central region, then consider attending the 49th Annual North Central Extension-Industry Soil Fertility Conference to be held November 5-6, 2019, from 1:00 p.m. to...

Soil Fertility

Alison Robertson
September 23, 2019 5:59 PM

As corn fields start to reach maturity across the state of Iowa, we need to start thinking about stalk and ear rots, particularly in terms of scheduling harvest and grain storage. Read on for more details on stalk rots and ear rots and how to scout for them.  

Stalk rots...

Plant Diseases

Meaghan Anderson
September 16, 2019 7:55 AM

Rebecca Vittetoe
September 16, 2019 7:55 AM

Harvest season will soon be here, and that will mean more equipment and slow-moving vehicles both on the farm and the road. This flurry of activity can result in an increased chance for farm and equipment-related accidents.

This week (September 15 – 21) is National Farm Safety and Health...

Equipment and Machinery, Grain Handling and Storage, Pesticide Education

Mark Licht
September 9, 2019 9:39 PM

Sotirios Archontoulis
September 9, 2019 9:39 PM

One of the pressing questions this fall is when corn will reach maturity and if there is going to be enough time to dry down in the field. We have developed and released a corn grain dry down calculator that can help...

Crop Production, Grain Handling and Storage

Erin Hodgson
September 6, 2019 8:21 AM

This week was my last field day of the summer – it’s always is a signal the season is ending. I noted plants are senescing fairly quickly on my drive to Kanawha. However, there are still a few insects active on field crops, and worth scouting for this weekend.

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Crop Production, Insects and Mites

Ethan Stoetzer
September 4, 2019 10:35 AM

One plant disease to keep a lookout for when harvesting grains and grasses for animal and human consumption is ergot. The ergot pathogen generates toxic alkaloids that potentially could create problems with livestock feeding, and when trying to market a small grain crop. The Crop Protection...

Crop Production, Grain Handling and Storage, Plant Diseases

John Sawyer
September 4, 2019 8:35 AM

Antonio Mallarino
September 4, 2019 8:35 AM

Sampling corn stalks this fall will likely be later than normal due to the delayed planting in many Iowa cornfields. The overall suggestion is to wait until crop maturity, and sample within 1-3 weeks after kernel black layer. This does not work well for silage corn, so the suggestion is to...

Soil Fertility

Bob Hartzler
September 4, 2019 7:55 AM

Sensing an impending lackluster performance by the Cyclone football team, I spent the Saturday of Labor Day weekend touring several Palmer amaranth infestations in western Iowa. This is the 6th year of this trek, the first stop is always Harrison County at the first reported Iowa...

Weeds

Paul Kassel
August 29, 2019 3:12 PM

Thistle caterpillars, late season crops disease and crop development will highlight the September 5 fall field day at the ISU Northern Research and demonstration farm fall field day.

Registration and refreshments will begin at 9 a.m. A noon lunch will be available. The field day is open...

Crop Production

Erin Hodgson
August 29, 2019 7:33 AM

Yesterday, while waiting for my field day stop to begin at the ISU Northeast Research Farm, I noticed a bright green insect land on my leg. At first glance, I thought it was the threecornered alfalfa hopper (Photos 1 and 2). I’ve never seen one in real life and was surprised to see it in...

Crop Production, Insects and Mites

Joel DeJong
August 28, 2019 3:06 PM

Paul Kassel
August 28, 2019 3:06 PM

Check out what ISU Extension and Outreach field agronomists in NW Iowa are seeing and hearing in their areas regarding crop progress and issues showing up in crop fields.

Crop Production

Virgil Schmitt
August 28, 2019 10:06 AM

Joshua Michel
August 28, 2019 10:06 AM

Rebecca Vittetoe
August 28, 2019 10:06 AM

Check out what ISU Extension and Outreach field agronomists in EC, SE, and SC Iowa are seeing and hearing in their areas regarding crop progress and issues showing up in crop fields.

Crop Production

Virgil Schmitt
August 28, 2019 9:27 AM

Joshua Michel
August 28, 2019 9:27 AM

Rebecca Vittetoe
August 28, 2019 9:27 AM

Mark your calendar for the September 5thFall Field Day at the Southeast Research and Demonstration Farm near Crawfordsville! The event will begin at 5:30 p.m. with a complimentary meal and registration. The tour starts at 6 p.m. and will feature the following topics:

Crop Production

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