Blog

Ashley Dean
June 5, 2024 2:36 PM

The trapping season for black cutworm (BCW) has come to an end. We appreciate our cooperators for tirelessly checking traps the last two months and reporting their captures so we can provide the most accurate scouting information for these pests. To recap, we had 25 volunteers participate from...

Crop Production, Insects and Mites

Rebecca Vittetoe
June 4, 2024 3:00 PM

The last week brought some drier weather across the state for farmers to get back in the fields to plant as well as for other field activities to be completed including spraying, putting up first cutting hay, and sidedressing. Delayed planting, replant decisions, yellow corn, white grubs, true...

Crop Production

Rebecca Vittetoe
May 30, 2024 2:36 PM

Terry Basol
May 30, 2024 2:36 PM

Over the last week, we've seen a lot of active weather across the state. In addition to tornadoes, wind, and heavy rains, areas across the state also got hit with hail. 

Waiting 7-10 days after a hail event helps give the crops a chance to recover and makes it easier to assess the damage...

Crop Production

Ashley Dean
May 29, 2024 9:24 AM

Moth flights into Iowa were drastically reduced during Week 8 (May 19 to May 25), partly because of fewer moths but also likely due to the fact that recent storms took out several traps across the state. Our cooperators recorded only 51 black cutworm (BCW) moths and, for the first time since...

Crop Production, Insects and Mites

Meaghan Anderson
May 23, 2024 9:20 AM

While the title is written with some jest, the sentiment is one I’ve been thinking about a lot this spring. With few highly effective postemergence herbicide options for waterhemp control, farmers must prioritize residual herbicides as a first line of defense. While there are numerous residual...

Weeds

Ashley Dean
May 22, 2024 9:44 AM

Black cutworm (BCW) moth flights seemed to wind down a bit during Week 7 (May 12 to May 18). Our cooperators recorded 106 BCW moths around the state. Only one significant flight (Buena Vista County, May 14) occurred during Week 7, which is a big change from previous weeks where several...

Crop Production, Insects and Mites

Rebecca Vittetoe
May 21, 2024 2:09 PM

The weather provided a window for farmers to get back in fields and continue to make planting progress. Other field activities in the last week included tillage, herbicide applications, harvesting first cutting of alfalfa, and rotary hoe operations in areas dealing with soil crusting. From the...

Crop Production

Rebecca Vittetoe
May 20, 2024 10:29 AM

Clarabell Probasco
May 20, 2024 10:29 AM

Last week at our Field Crop Scout School one resource that we shared was a list of crop scouting related apps and web-based resources. There are a lot of apps and web-based resources out there that can be helpful when it comes to crop scouting.

Check out the list we complied below or...

Crop Production

Elizabeth Danielson
May 16, 2024 9:39 AM

The U.S. Environmental Protection Agency (EPA) is asking for public comment on Dicamba, Glufosinate-P, and Acephate.

New Use for Dicamba Product

Bayer CropScience has requested the EPA to register a new use of dicamba on dicamba-tolerant soybeans and cotton.

Background...

Pesticide Education

Erin Hodgson
May 16, 2024 7:53 AM

You may have heard of a special entomological event happening this year. It’s true, a rare “double brood emergence” of periodical cicadas is happening in 2024. The last time this happened was in 1803 when Thomas Jefferson was the US president. Read on to learn more!

Brood XIII, called the...

Insects and Mites

Ashley Dean
May 15, 2024 9:57 AM

Week 6 (May 5 to May 11) brought fewer moths into Iowa than the previous week, but cooperators still recorded 135 black cutworm (BCW) moths around the state. Five significant flights occurred last week, adding to the numerous significant flights that have already occurred this season.

Crop Production, Insects and Mites

Ashley Dean
May 14, 2024 2:00 PM

Erin Hodgson
May 14, 2024 2:00 PM

Western and northern corn rootworms are serious corn pests in Iowa and the Corn Belt. These pests readily adapt to management tactics, especially in continuous corn production. The larvae consume corn roots, thereby reducing nutrient and water uptake, and cause stalk lodging. The adults may also...

Crop Production, Insects and Mites

Rebecca Vittetoe
May 14, 2024 9:32 AM

Last week was another wet week with rainfall totals ranging from just over 0.5 inch to 2.5+ inches of rain across the state. Folks were finally able to get back in fields late last week and over the weekend to do tillage, plant, spray, and even get hay cut and baled or cover crops harvested for...

Crop Production

Rebecca Vittetoe
May 10, 2024 4:30 PM

Mark Licht
May 10, 2024 4:30 PM

Planting progress started off strong, but recent rain events across the state have brought it to a screeching halt. It seems like fields get just about fit to get back in them to plant and it rains again. According to the May 6th USDA Crop Progress Report, corn planting was at 47%...

Crop Production

Rebecca Vittetoe
May 10, 2024 8:31 AM

Meaghan Anderson
May 10, 2024 8:31 AM

With all the alfalfa weevils, we’ve had quite a few questions on how do you know if a field is a threshold to take action? Or I’ve used my sweep net, what’s the threshold per sweep for alfalfa weevil?

First off, a sweep net can be a helpful tool to determine if alfalfa weevils are present...

Crop Production, Insects and Mites

Meaghan Anderson
May 9, 2024 9:41 AM

With the quick planting that happened the week of April 22-26 and the lack of field activity since due to high winds and rain, some fields may have crops emerging that have had no preemergence herbicide. While some herbicides can be applied prior to or after crop emergence, many have...

Crop Production, Weeds, Herbicide Resistance

Shelby Gruss
May 9, 2024 9:30 AM

Joshua Michel
May 9, 2024 9:30 AM

Estimating First Crop Alfalfa Harvest using PEAQ

Alfalfa growth and development is affected by many factors, including temperature, soil moisture, stand age and even cultivar. We have had a warmer and milder winter leading into spring, causing earlier alfalfa green-up and...

Crop Production

Rebecca Vittetoe
May 7, 2024 10:36 PM

Recent rain events have put a delay on much planting progress and other field activities across the state of Iowa. Planting considerations, alfalfa weevil, cover crop termination, and weed management have been some of the common questions or topics reported by ISU Extension and Outreach...

Crop Production

Shelby Gruss
May 7, 2024 4:03 PM

Erika Lundy-Woolfolk
May 7, 2024 4:03 PM

Is it Time to Graze Your Pastures?

As spring rolls in, our cool-season pastures start showing signs of life and look more enticing than the muddy feeding areas. But before we let our livestock loose, it's crucial to assess whether pastures are truly ready.  While the...

Crop Production

Ashley Dean
May 7, 2024 3:53 PM

Erin Hodgson
May 7, 2024 3:53 PM

For the second year in a row, alfalfa weevil is the most prominent spring pest for farmers. Unprecedented populations south of I-80 have been reported in 2024 and are proving to be much more severe and widespread than in previous years. We are predicting northern Iowa counties to also experience...

Crop Production, Insects and Mites

Ashley Dean
May 7, 2024 11:52 AM

Black cutworm moth captures spiked again during Week 5 (April 28 to May 4). A total of 182 BCW moths were reported by our cooperators during Week 5. The most moths were reported on April 29 (81 moths), but captures were scattered throughout the week. Six significant flights occurred last week,...

Crop Production, Insects and Mites

Meaghan Anderson
May 7, 2024 10:01 AM

With technology playing such an integral part of our ability to effectively manage crop production, it makes sense that it also plays a key role in effective scouting. One of the simplest technologies (now, anyway) is taking a good picture to share with a trusted advisor, a farmer client, or...

Crop Production

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