Blog

John Sawyer
September 8, 2020 2:41 PM

Fall nitrogen (N) application for corn continues to be popular for several reasons, including lower product cost, time for application, equipment availability, suitable soil conditions, and competing springtime field activities. Success, relative to spring or sidedress timing, can be enhanced by...

Soil Fertility

Angie Rieck-Hinz
September 8, 2020 10:22 AM

ISU Extension and Outreach and the College of Agriculture and Life Sciences recently hosted a “five-stop” virtual field day series. This series featured a greeting by Dean Dan Robison, an administrative update on the farms, and four consecutive days featuring water quality research, fungicide...

Crop Production

Bob Hartzler
September 7, 2020 8:19 AM

Harrison County: Ground zero for Palmer amaranth in Iowa is a 25 acre field that had a severe Palmer amaranth infestation when the weed was first identified in 2013.  Since then populations have consistently declined - this year I was unable to find any Palmer in the field,...

Weeds

Prashant Jha
September 3, 2020 11:57 AM

Bob Hartzler
September 3, 2020 11:57 AM

Meaghan Anderson
September 3, 2020 11:57 AM

Downed corn from the August 10 Derecho, which affected millions of acres in Iowa, will contribute to significant volunteer corn populations in crop fields in 2021. Volunteer corn ranging from 800 to 13,000 plants per acre can cause yield losses up to 54% in soybean and up to 13% in corn,...

Weeds

Meaghan Anderson
September 2, 2020 10:29 PM

Rebecca Vittetoe
September 2, 2020 10:29 PM

Drought continues to expand across the state, and August 2020 came in as one of the driest Augusts since 1893 across the state. Crops appear to be racing toward maturity, with several reports of both corn and soybean very near harvest-ready. While...

Crop Production

Mark Licht
September 1, 2020 2:29 PM

Zachary Clemens
September 1, 2020 2:29 PM

Save money and time this fall by planning for no-till soybean planting next spring. Many farmers are moving away from tillage, due to a host of detrimental environmental factors involved with tillage as well as reducing cost of soybean production.

Soybean yields are not impacted by no-...

Crop Production, Equipment and Machinery

Matt Darr
September 1, 2020 8:38 AM

Ryan W Bergman
September 1, 2020 8:38 AM

Mark Licht
September 1, 2020 8:38 AM

Meaghan Anderson
September 1, 2020 8:38 AM

Angie Rieck-Hinz
September 1, 2020 8:38 AM

Following the derecho event on August 10, millions of acres in Iowa face challenging conditions. In many cases the corn may be unharvestable. These unharvestable fields require some level of fall management to ensure the future crop can achieve even emergence and normal early plant growth.

...
Crop Production

Charles R Hurburgh
August 31, 2020 2:45 PM

The combination of drought, derecho and recent hot weather in Iowa increases the need to keep grain quality in check. As harvest nears, consider the following:

Crop Production, Grain Handling and Storage

John Sawyer
August 28, 2020 3:15 PM

Corn fields destroyed by the August 10, 2020 derecho will have different crop residue than normal after grain harvest. Things that will be different include early plant death (at varying reproductive growth stages), ears at various stages of grain fill, and whole plants instead of “loose” stalks...

Soil Fertility

Bob Hartzler
August 27, 2020 8:07 AM

Dear regulators,

I assume you are evaluating data and reviewing information that will guide your decision regarding the re-registration of dicamba for use in dicamba-resistant (DR) crops. As you know, farmers have a critical need for additional tools to help manage herbicide-resistant...

Weeds

Meaghan Anderson
August 26, 2020 3:45 PM

Rebecca Vittetoe
August 26, 2020 3:45 PM

Rainfall still eludes most of the state of Iowa, and drought has continued to envelope the state, with the driest areas expanding from the west central part of the state. Crops continue to go downhill in the...

Crop Production

Aaron Saeugling
August 25, 2020 6:09 PM

Chopping silage during rapid drying conditions always bring up the question of “How much water do I add?” The short answer: It is practically impossible to add enough to get to your desired moisture level. 

To add one point of moisture for each ton of silage you would need to add seven...

Crop Production

Joshua Michel
August 25, 2020 8:23 AM

Mark Licht
August 25, 2020 8:23 AM

Fall Management Options for Corn Fields That Are Unharvestable

Millions of corn acres have been damaged by the derecho on August 10. Unfortunately for some of these acres, harvest will not take place. Decisions regarding fall management options will need to be made in the...

Crop Production

Ryan W Bergman
August 21, 2020 2:55 PM

Aaron Saeugling
August 21, 2020 2:55 PM

Shawn Shouse
August 21, 2020 2:55 PM

Kristina TeBockhorst
August 21, 2020 2:55 PM

Mark Hanna
August 21, 2020 2:55 PM

The unprecedented August 10 derecho storm event has caused significant damage to Iowa corn fields. If it’s decided to proceed with harvesting the field for grain, several operational changes may increase performance and productivity of the combine.

Equipment and Machinery

Erin Hodgson
August 21, 2020 9:44 AM

The range of soybean gall midge has expanded in 2020. There are three new counties in Iowa (Osceola, Dickinson, and Calhoun) for a total of 29. So far, 108 total counties are confirmed in Iowa, Minnesota, Missouri, Nebraska, and South Dakota. Likely more counties have soybean gall midge but...

Crop Production, Insects and Mites

Aaron Saeugling
August 20, 2020 10:18 AM

While much of the damage from this month’s derecho is due to strong hurricane-force winds, isolated pockets of hail affected crops also, particularly in parts of Carroll, Greene, Hamilton, Hardin, Boone, and Story counties.  When addressing any crop damage, contact your crop insurance provider...

Crop Production

Daren Mueller
August 17, 2020 7:34 AM

Alison Robertson
August 17, 2020 7:34 AM

Wind and storm damaged soybean have been reported across Iowa, creating yet another stress for farmers this growing season. Certain fungicide products are marketed as being capable of reducing stress in crops, so should they be sprayed on soybean this late in the season?  

...

Plant Diseases

Ashley Dean
August 14, 2020 7:07 AM

Erin Hodgson
August 14, 2020 7:07 AM

Caterpillars have been extremely active this year, especially in soybean. We suspect that late-season infestations of caterpillars in corn are no exception. These infestations are serious because these caterpillars feed on the ear and/or tunnel into stalks. Their feeding can also lead to...

Crop Production, Insects and Mites

Shawn Shouse
August 13, 2020 11:02 AM

Dirk Maier
August 13, 2020 11:02 AM

When steel grain bins sustain wind damage, careful inspection is needed to evaluate repair or replacement options. Inspection assistance and advice from a consulting engineer or bin manufacturer representative is the best option.

When damage is confined to the roof, sidewall sheets, or...

Grain Handling and Storage

Matt Darr
August 12, 2020 8:06 PM

Ryan W Bergman
August 12, 2020 8:06 PM

Monday’s derecho event took a toll on crops across Iowa. Satellite imagery shows millions of acres of Iowa crops impacted by the high wind events. As growers dig out from the destruction left after the storm, decisions regarding how to manage the impacted crop will be front and center.

...

Crop Production

Meaghan Anderson
August 12, 2020 12:32 AM

Rebecca Vittetoe
August 12, 2020 12:32 AM

While some rainfall has come to the droughty areas of the state, drought intensified to D3 (extreme) drought in parts of central and west central Iowa. Unfortunately, a large swath of the state is now facing...

Crop Production

Rebecca Vittetoe
August 4, 2020 10:58 PM

Meaghan Anderson
August 4, 2020 10:58 PM

Drought conditions persist in western Iowa and have expanded further into central and north central Iowa this week. Common issues reported by ISU Extension field agronomists this past week included poor grain fill and fast reproductive development in corn, increasing disease pressure in some...

Crop Production

Madelynn Connell
August 3, 2020 8:08 PM

Danielle M Clark (Wilson)
August 3, 2020 8:08 PM

Emily Heaton
August 3, 2020 8:08 PM

In the interview, “A Farmer’s Journey with Miscanthus: Part 1,” we learned about Steve Schomberg and his involvement with growing miscanthus for the University of Iowa power plant. Steve has also been working with Koch Angus Farms, a cattle production farm near Letts, Iowa for the last four...

Crop Production

Angie Rieck-Hinz
August 3, 2020 8:17 AM

Meaghan Anderson
August 3, 2020 8:17 AM

ISU Extension and Outreach field agronomists, Meaghan Anderson and Angie Rieck-Hinz, recently partnered with their extension colleagues at the University of Minnesota to organize and deliver the second webinar series, Essential Row Crop...

Crop Production, Insects and Mites, Plant Diseases

Aaron Saeugling
July 29, 2020 9:20 PM

Over the last two weeks I have received a few calls related to identifying a “new form of waterhemp” in Southwest Iowa. In reality, we do not have a new form of waterhemp, but a condition referred to as ‘fasciation’ (Figure 1). While this can occur in many plant species, plants like cacti and...

Weeds

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