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Given the dry conditions that prevailed Iowa in 2023, there will be herbicide carryover in 2024. Suspect herbicides that are likely to carryover include, but are not limited to atrazine, clopyralid, and the various HPPD inhibitor herbicides. Specifically, the accuracy, evenness, and timing (i.e...
Iowa soils can hold 9-12 inches of water in the soil profile and most parts of Iowa have shallow water tables at about 4-7 feet depth. These two sources of water, together with the precipitation, provide water for crop production. Typically, a 250 bu/ac corn yield requires about...
Planting, in my opinion, is THE most important field operation. Planting in the optimal planting window and into good seedbed conditions will set the plant up for rapid growth and high yield potential. With planters beginning to move or sitting in waiting for better...
Key Points
- El Nino transitioning to La Nina during this summer; increased risk of heat
- Still need more moisture for streamflow recovery in many areas of the state, particularly southern and eastern parts of the state
- Good chances for the planting season to be...
I have been observing, and also receiving phone calls and e-mails about, purple weeds in untilled fields. If you observe such an area, the weeds are probably either purple deadnettle (Lamium purpureum) or henbit (Lamium amplexicaule) or a mixture of the two. They are very...
A few more farmers are switching to a high-speed planter when upgrading or trading planters. A few reasons they report for switching to the high-speed planter include:
The 2024 moth trapping season is underway, and our volunteers began placing traps the week of March 24. Black cutworm (BCW) monitoring is a long-standing project in Iowa to detect moths migrating from southern overwintering sites each spring. By monitoring adult black cutworms, we can provide...
It is important to read and follow all label instructions before applying a pesticide to...
Over the last 10 days, precipitation totals across the state have varied with less precipitation falling in the western and northern part of the state and heavier amounts falling in the east-central and southeast part of the state.
With the announcements of water usage restrictions in parts of Iowa, pesticide applicators may need to use alternative water sources for their pesticide...
During the past 90 days, temperatures have been warmer than average, keeping soils from freezing and allowing much needed precipitation to infiltrate into the soil. Despite accumulated precipitation across the state being greater than average for the past 90 days, soil moisture is still lacking...
AMES, Iowa – Planting season varies wildly from year to year and technology is always changing. Cool and wet conditions can dramatically delay planting. When soil conditions are remarkably dry, getting seed in the soil at the correct depth is a challenge. But just as each planting season is...
With recent reports of mandatory water...
The 2024 crop season is quickly approaching so this article will help you prepare your GPS monitor for the planting season. The ISU Extension and Outreach has a web-based guide that can be used either from a computer or smart phone using a web browser like Google Chrome. This web-based...
The spring planting season in Iowa is quickly approaching. Therefore, it is critical to prepare now and check a few items when starting each field. While it takes time to check these items, field research has shown that getting the correct gauge wheel pressure (downforce pressure) to help create...
The spring planting season in Iowa will start soon, so it is time to make a list of items to check and get completed before we go to the field. As we all know, planting the seed at the right time, right seed depth, and acceptable soil conditions is critical to giving the crop the best starting...
Alan Parnell is passionate about helping to educate farmers and the public about agricultural research.
The Oklahoma native spent more than 30 years as an ag educator for the Oklahoma State University Extension Service. In February, he accepted a position to lead Iowa State University...
By Nabin K. Dangal, Edgar Nieto, Stith Wiggs, Jose Gonzalez-Acuna, and Daren S. Mueller.
Recent court cases have brought changes to two pesticides with agricultural uses.
Chlorpyrifos legal for 2024
In late 2023, the Eighth Circuit court rejected the Environmental Protection Agency’s (EPA) 2021 Final Rule revoking all food tolerances for the organophosphate...
It most certainly has been a strange winter with very little moisture. This fact, combined with a multi-year drought has people concerned for spring planting. Most farmers I have talked to this winter have shared concerns about not only the lack of precipitation, but the lack of soil moisture....
High February temperatures have prompted many alfalfa fields across the state to initiate greening up over the past couple of weeks (Figure 1). However, temperatures then plummeted (9°F) earlier this week, likely resulting in the demise of the new growth. But the more pressing question is...
You are invited to the Southeast Iowa Agricultural Research Association's annual meeting, on Thursday, March 7, at the Southeast Research and Demonstration Farm, located at 3115 Louisa-Washington Rd, Crawfordsville.
The association, in partnership with Iowa State University, oversees the...
This winter's erratic weather, swinging from -30°F wind chills to unseasonably warm highs in the 50s, has left many pondering whether to frost-seed or not to frost-seed. As the calendar inches towards mid-February, the dilemma intensifies, with some already contemplating drilling spring oats or...
Soybean planting dates have been moving earlier and earlier. In a nod to this, the USDA Risk Management Agency has moved up the earliest planting dates for replant insurance coverage – April 10 for the southern 3 tiers of Iowa counties and April 15 for the northern 6 tiers of Iowa counties. Even...
Iowa State University’s IPM Team has monitored field crop pests for a long time. The pests have changed over the years, but the goal is the same: to help inform farmers about pest activity in Iowa. Our moth trapping efforts target black cutworm, which is a migratory moth. Since timing of arrival...