Blog

Rebecca Vittetoe
July 25, 2023 10:50 PM

Limited rainfall, the hot weather this week, corn rootworm, weed escapes, insect defoliators, and questions on foliar fungicides have been the more common issues or questions Iowa State University Extension and Outreach Field Agronomists have seen or heard about over the last week. Read on for...

Crop Production

Rebecca Vittetoe
July 18, 2023 10:27 PM

Over the last week much needed rain was received, but it also unfortunately brought along wind and hail to some parts of the state. Other hot topics coming in from fields across the state this past week included corn rootworm, soybean gall midge, phytophthora in soybeans, tar spot, gray leaf...

Crop Production

Angie Rieck-Hinz
July 18, 2023 7:00 AM

Gentry Sorenson
July 18, 2023 7:00 AM

Meaghan Anderson
July 18, 2023 7:00 AM

Clarabell Probasco
July 18, 2023 7:00 AM

Check out the upcoming field days being offered around the state this August. These field days will feature a variety of topics ranging from strip-till and conservation to forage production and corn rootworm management.  

August 1, 2023 | Corn Rootworm Field Day...

Crop Production

Ashley Dean
July 14, 2023 11:51 AM

Erin Hodgson
July 14, 2023 11:51 AM

Meaghan Anderson
July 14, 2023 11:51 AM

Blister beetles are an occasional late-summer problem in Iowa alfalfa fields. The beetles feed on alfalfa and soybean foliage, but leaf loss is not of economic importance. The bigger concern with blister beetles is their toxicity to livestock when accidentally consumed in feed. The beetles...

Crop Production, Insects and Mites

Rebecca Vittetoe
July 11, 2023 4:19 PM

Corn rootworm, soybean gall midge, tar spot, drought stress, and weed control issues are some of the common issues or questions Iowa State University Extension and Outreach Field Agronomists have seen or heard about the past couple of weeks. Read on for more specifics about what’s happening...

Crop Production

Sotirios Archontoulis
July 7, 2023 9:43 AM

Mark Licht
July 7, 2023 9:43 AM

The smoke from the 2023 Canada wildfires was noticeable in Iowa, especially on June 28 and 29, and concerns about impacts on crop productivity were voiced. The smoke from the California wildfires (August 2021) was evident in Iowa too, however, this did not have a negative effect on crop...

Crop Production

Erin Hodgson
July 6, 2023 2:34 PM

Although some parts of Iowa have been catching up with moisture deficits, many areas continue to be in severe drought. Drought stress combined with high temperatures is good news for field crop pests like grasshoppers and spider mites. We’ve been getting reports of high grasshopper numbers...

Crop Production, Insects and Mites

Rebecca Vittetoe
June 27, 2023 12:36 PM

While some much needed and welcomed rain fell across most of the state this past week, some areas received minimal to no rain. The dry conditions, herbicide injury, potato leafhoppers, nutrient deficiencies (mainly potassium), weed control failures, and tar spot are some of the highlights on the...

Crop Production

Alison Robertson
June 23, 2023 1:44 PM

Well, I’ll be darned! Yesterday I tweeted the only disease being seen in Iowa corn was common smut on leaves. Thanks to an overzealous crop scout from a seed company, we can confirm that tar spot was observed in central Iowa (Poweshiek, Tama, Marshall, Jasper, Story and Polk counties) yesterday...

Plant Diseases

Rebecca Vittetoe
June 20, 2023 3:16 PM

Dry conditions causing crop stress, herbicide carryover and drift, nutrient deficiencies induced by the dry conditions, armyworms in forages, and a frost event in NE Iowa were some of the common or big issues or questions ISU Extension and Outreach Field Agronomists heard about or received this...

Crop Production

Joshua Michel
June 15, 2023 11:51 AM

Ashley Dean
June 15, 2023 11:51 AM

Denise Schwab
June 15, 2023 11:51 AM

On June 14, Iowa State University extension entomologists put out a Pest Alert to scout for true armyworm because of statewide reports of this pest feeding on crops. In addition, there have been multiple...

Insects and Mites

Chelsea Harbach
June 15, 2023 9:50 AM

We’re well into the growing season in Iowa. We are in full swing in the Plant & Insect Diagnostic Clinic (PIDC) as growers, certified crop consultants, and field agronomists start to notice problems in their fields. While there is information on our PIDC webpage (...

Crop Production, Insects and Mites, Plant Diseases, Soils, Weeds

Rebecca Vittetoe
June 13, 2023 12:17 PM

The dry conditions across the state can be attributed to a lot of the issues or questions ISU Extension and Outreach Field Agronomists heard about or received this past week including issues like herbicide carryover, nutrient deficiencies, and showcasing compaction issues in fields not just from...

Crop Production

Aaron Saeugling
June 12, 2023 9:09 AM

The best way to break the drought is to write an article from extension about dry weather. So, here’s a stab at trying to make it rain.

Today’s hybrids have amazed farmers on their yields in dry environments. I often get questions about early season drought stress and corn rolling in the...

Crop Production

Ashley Dean
June 9, 2023 2:26 PM

Erin Hodgson
June 9, 2023 2:26 PM

We have had a busy few weeks fielding questions from farmers and agronomists about various insects that are feeding in crop fields. Temperatures have been warm and that has prompted many insects to resume activity – they are hungry! The biggest concern lately has been true armyworms, but other...

Crop Production, Insects and Mites

Rebecca Vittetoe
June 6, 2023 10:38 PM

Spotty rainfall and dry conditions, replanting/filling in soybean stands, weed management/herbicide application considerations, and fertilizer burn on corn roots were some of the more common concerns or questions ISU Extension Field...

Crop Production

Rebecca Vittetoe
June 6, 2023 5:34 PM

Plan to attend the upcoming field days that will be hosted at the outlying Iowa State University Research and Demonstration Farms this summer. These field days will feature the latest information on crop production and crop management practices. Below is a list of the upcoming field days that...

Crop Production

Ashley Dean
June 6, 2023 11:06 AM

The trapping season for true armyworm (TAW) and 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 31...

Crop Production, Insects and Mites

Justin Glisan
June 5, 2023 8:36 PM

Dennis Todey
June 5, 2023 8:36 PM

The final June climatological outlooks from the NOAA Climate Prediction Center (CPC) issued on May 31st continue to show similar patterns as the initial outlooks from mid-May. On the temperature side, there are higher probabilities of warmer-than-average conditions across most of Iowa. A “...

Crop Production

Clarabell Probasco
June 1, 2023 3:02 PM

Aaron Saeugling
June 1, 2023 3:02 PM

With the steady growth and production of pasture forages across the state comes the steady appearance and growth of the nuisance pasture weed, multiflora rose (MFR). Due to its unpalatability, most grazing species will not consume MFR, allowing it to continue growing throughout the season and...

Weeds

Aaron Saeugling
May 31, 2023 9:46 PM

The choice to foliar feed crops is a management decision each farmer needs to make based on personal preferences. Before considering these products, we need to first consider the return on the investment and chance for success. 

When considering foliar fertilizing corn and soybean we need...

Crop Production

Rebecca Vittetoe
May 31, 2023 4:16 PM

With turning the calendar to June, now is the time to be seeding warm-season annual forages like sorghum, sorghum-sudangrass, sudangrass, millets, and teff. These forages can help to fill in the gap with the summer slump or provide some extra forage when your perennial forage supply may be short...

Crop Production

Alison Robertson
May 30, 2023 8:00 AM

It’s a great time of year!  The weather is finally warming up enough to wear shorts and green stripes are finally occurring across the landscape as corn (and beans) emerge.  USDA reports 85%...

Plant Diseases

Ashley Dean
May 25, 2023 10:23 AM

Moth flights into Iowa slowed down a bit during Week 7 (May 14 to May 20). Cooperators for the Iowa Moth Trapping Network reported 147 black cutworm (BCW) and 130 true armyworm (TAW) moths, with three new significant flights of black cutworm. More details on significant flights and cutting dates...

Crop Production, Insects and Mites

Ashley Dean
May 25, 2023 7:54 AM

Erin Hodgson
May 25, 2023 7:54 AM

Alfalfa growth is off to the races in many parts of Iowa, and we have heard reports from around the state that insects are very active in alfalfa as well. Field agronomists, especially in southern Iowa, have...

Crop Production, Insects and Mites

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