Blog

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.

...

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

Sotirios Archontoulis
August 22, 2019 3:02 PM

Mark Licht
August 22, 2019 3:02 PM

Update on crop and soil status across the I-states – August 21, 2019

This year the FACTS project is providing a suite of regional scale maps to assist decision making. The data provided is based on APSIM model simulations which are driven...

Crop Production

Paul Kassel
August 21, 2019 5:00 PM

aerial seeding of cover crops into standing corn

Farmers and agribusiness are invited to the Allee Demonstration Farm for a field day on Tuesday August 27.  Coffee and...

Crop Production

Sotirios Archontoulis
August 21, 2019 9:02 AM

Mark Licht
August 21, 2019 9:02 AM

According to the latest NASS report, the 2019 corn crop is about 2-weeks behind normal in terms of reaching dent stage. What are the implications of this delay in grain filling period and end of season yield? We address this question by examining two key weather variables; solar radiation and...

Crop Production

Justin Glisan
August 16, 2019 8:22 AM

We've gone from being too wet to the other extreme of being dry in parts of the state. Below is a summary of the most recent US Drought Monitor (USDM) map for the state of Iowa and a brief explanation of what data goes into making the USDM.

Current Conditions in Iowa. ...

Crop Production

Rebecca Vittetoe
August 15, 2019 2:44 PM

Now is the time to be doing late summer seeding of forages. This ICM article Steve Barnhart, retired Extension forage specialist, wrote does a nice job providing basic information to successfully...

Crop Production

Rebecca Vittetoe
August 13, 2019 2:12 PM

Limited rain fell across the state this past week, and approximately 36% of the state is considered to be abnormally dry according to the U.S. Drought Monitor as of last Tuesday, August 6. In addition to the dry...

Crop Production

Bob Hartzler
August 13, 2019 9:48 AM

The current approach to weed management in Iowa is at risk due to rapid expansion of herbicide-resistant weeds. In order to preserve the efficacy of herbicides two things must happen: 1) adoption of integrated weed management, and 2) shift the goal of weed management from protecting crop yields...

Herbicide Resistance

Bob Hartzler
August 12, 2019 2:28 PM

Meaghan Anderson
August 12, 2019 2:28 PM

The 2019 Iowa State University Extension and Outreach Iowa State Fair Weed Identification Contest was held on August 9 outside the John Deere Agriculture Building.  Contestants need to identify live samples of weeds of agricultural, horticultural, and natural habitats in Iowa.  Youth are tasked...

Weeds

Justin Glisan
August 11, 2019 11:12 PM

When will the first hard freeze or killing frost (equal to or less than 28°F) date be this fall? This is a question a lot of folks are wondering about right now. Over the last few decades the trend for the first frost and freeze dates in the fall has been that they are occurring later in the...

Crop Production

Alison Robertson
August 9, 2019 3:57 PM

Edward Zaworski
August 9, 2019 3:57 PM

This past week there have been numerous new reports of tar spot within the Midwest, including Iowa (Figure 1). For updates maps, please visit https://corn.ipmpipe.org/tarspot/

...

Plant Diseases

Rebecca Vittetoe
August 6, 2019 12:18 PM

The growing season started off too wet, but now we are going to the other extreme of being too dry in places. According to the U.S. Drought Monitor, just shy of 25% of the state was considered abnormally dry as...

Crop Production

Erin Hodgson
August 2, 2019 2:08 PM

Ashley Dean
August 2, 2019 2:08 PM

Today in our corn efficacy evaluation trial, Ashley and our undergraduate team found small corn earworm caterpillars infesting ears (Figures 1 and 2). Caterpillars have a light-colored head but vary considerably in color from light green, tan, pink, maroon, and nearly black. However, they almost...

Crop Production, Insects and Mites

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