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Paul Kassel
November 10, 2015 10:30 AM
By: Paul Kassel
Iowa State University has conducted a survey of subsoil moisture since 1955. It is my understanding that there were some very dry conditions in the 1950s – and the ISU Agronomy department and ISU Extension responded by assessing soil moisture to help farmers...
Mahdi Al-Kaisi
November 9, 2015 12:16 PM
By: Mahdi Al-Kaisi
Soil tillage increases the potential for soil erosion and reduces water infiltration and subsoil recharge. Keeping crop residue on the soil surface this fall along with...
Paul Kassel
October 30, 2015 1:41 PM
By: Paul Kassel
Soybean harvest has been complete in northwest/north central Iowa for a couple of weeks.
Corn harvest is wrapping up also. I would guess that there is about 15% of the corn that is yet to be harvested.
We have experienced a very warm and dry harvest season....
By: Rachel Klein
New online options were introduced in October 2015 for the Manure Applicator Certification Program to help applicators across the state become...
By: Greg Brenneman
In the past couple of weeks a lot of corn and soybeans went into storage with temperatures in the 60s. With grain this warm, moisture migration within the grain mass and spoilage can occur very quickly, even with fairly dry grain.
With average daily temperatures...
Clarke McGrath
October 20, 2015 2:45 PM
Mark Hanna
October 20, 2015 2:45 PM
By Clarke McGrath and Mark Hanna
It’s always difficult to forecast weather, but if dry field conditions persist, the potential for combine and field fires this fall will continue to be a problem. There have already been dozens of significant field fires around the state,...
Clarke McGrath
October 16, 2015 11:02 AM
By: Clarke McGrath
It’s NH3 season, so here are some safety reminders from a guy who has seen how badly NH3 can injure people, first-hand. We work around it so much that sometimes we forget how caustic and dangerous it is.
Mahdi Al-Kaisi
October 14, 2015 4:26 PM
By: Mahdi M Al-Kaisi
The Inaugural Soil Health Conference “Strategies for Building Healthy Soils” will be February 2-3, 2016 at the Scheman Building in Ames, Iowa. The goal of this conference is to increase awareness and understanding of soil health as a pivotal measure to...
Rebecca Vittetoe
October 14, 2015 10:05 AM
By: Rebecca Ahlers
As a field agronomist, you see all sorts of interesting things in fields and never know what you may come across. I've seen and heard of slug injury early on in soybeans, but snails?
...
Clarke McGrath
October 9, 2015 4:44 PM
By: Clarke McGrath
In running plots and talking with growers the last week or so, the shift to more “fall-like” temperatures has people thinking, “Maybe I can run some fall NH3 while (if) I am held up waiting on trucks, grain drying, or other typical fall delays.”
Having been...
Clarke McGrath
October 7, 2015 4:24 PM
By: Clarke McGrath
Stalk rot issues have only gotten worse in recent weeks; in some cases, a lot worse. Stalk rot and resultant standability challenges have reportedly been issues across much of the state, and are not hard to find in most of southwest and west central Iowa.
...
Daren Mueller
October 7, 2015 11:57 AM
Xavier Phillips
October 7, 2015 11:57 AM
Chelsea Harbach
October 7, 2015 11:57 AM
By: Daren Mueller and graduate students, Xavier Phillips and Chelsea Harbach
Some are noticing plants with green, yellow or purple...
Paul Kassel
October 2, 2015 11:20 AM
A couple of farm visits took me from Emmetsburg to Cylinder to Ringsted on October 1. I am guessing the soybean harvest in those areas is about half done.
The big news this year is that we are seeing some exceptional soybean yields. There are lots of credible reports of 60 bu/a whole...
Erin Hodgson
September 29, 2015 9:04 AM
Laura Jesse Iles
September 29, 2015 9:04 AM
Donald Lewis
September 29, 2015 9:04 AM
As harvest begins and other plants in the landscape senesce, many insects and arthropods move to find overwintering habitat. Sometimes...
Paul Kassel
September 11, 2015 3:03 PM
Crop development progress is looking good in northwest Iowa. We are seeing corn that is in the 1/2 milk line stage as well as a few fields that have reached black...
Bob Hartzler
September 11, 2015 12:14 PM
All across Iowa, the edges of woods are lined with plants bearing clusters of white flowers. There's a good likelihood those plants are white snakeroot, a native perennial in the Asteraceae family. The plant is best known for its role in milk sickness, an ailment responsible for the death of...
Mark Licht
September 8, 2015 8:54 AM
A new UNL Yield Forecast came out last Friday. The high probability of near- or above-average yields continues at all Iowa locations. The Sutherland and Kanawha locations still have considerable probability of below normal yields. The Lewis location has greater than a 99% probability of...
Bob Hartzler
September 7, 2015 12:36 PM
Short Version: 493 miles in 12 hours; 2 out of 3 known Palmer amaranth sites well managed; no new infestations found.
Long Version: I went to the three Palmer amaranth infestations in western Iowa that I am aware of. This is...
Bob Hartzler
September 1, 2015 7:29 AM
An extension client asked why waterhemp that survive a postemergence herbicide often develop into a bushy plant with an abnormally thick stem. The short answer would be the plant was too big when it was sprayed, but I trust this person wanted a more in-depth response.
...
Bob Hartzler
August 25, 2015 7:50 PM
One of the first memories of my extension career is a farmer from northwest Iowa explaining his approach to managing the weed seedbank. He stated that he carried a box of atrazine 90DF in his combine. Whenever he encountered a velvetleaf or cocklebur he would stop, pull the offending weed, place...
Erin Hodgson
August 25, 2015 9:19 AM
The last few weeks have been full of soybean aphid discussions. Populations have been going up, down and otherwise looked sort of bumpy this summer. Many fields exceeded the economic threshold of 250 per plant and were treated with foliar insecticides in August, particularly in northern Iowa. My...
Bob Hartzler
August 24, 2015 1:05 PM
Burcucumber and wild cucumber (AKA wild balsam apple) are weedy members of the cucumber family. They are frequently found along river bottoms and other wet areas, and may cause serious problems due to their ability to climb and smother small to medium sized trees. Burcucumber is more likely to...
Paul Kassel
August 19, 2015 4:23 PM
We have experienced quite a turnaround in weather the last four days. Last Sunday August 16 – we were experiencing dry soil, high temperatures and crop stress. After a late Sunday afternoon rain shower of around 0.5 inch – things were looking good.
However, the...
Mark Licht
August 14, 2015 4:32 PM
The new Yield Forecast came out from the UNL project on today. There is a high probability of near- or above-average yields at all six Iowa locations with 95% probability being near- or above average at all locations except northwest and north central Iowa. The range of yield potentials forecast...
Adam J. Varenhorst
August 14, 2015 9:42 AM
Mike Dunbar
August 14, 2015 9:42 AM
Aaron J Gassmann
August 14, 2015 9:42 AM
Erin Hodgson
August 14, 2015 9:42 AM
Corn rootworm adult emergence is underway in Iowa. The three species of rootworm found in Iowa include the northern corn rootworm (NCR), southern corn rootworm (SCR), and western corn rootworm (WCR). Adults of all three species can be found until the first frost. Knowing how to distinguish the...