Volume 2, Issue 11
November 1, 2019
This newsletter is an update on current topics and events in agriculture in Boone, Dallas, Jasper, Madison, Marshall, Polk, Story, Tama, and Warren counties.

Meaghan Anderson
Extension Field Agronomist

ISU Extension & Outreach
220 H Avenue
Nevada, Iowa 50201
Office:  515.382.6551
Cell:     319.331.0058

Upcoming Events

IDALS Apr 19 - Dec 19 Pesticide Testing Schedule

Nov 5-6 - North Central Extension-Industry Soil Fertility Conference, Des Moines

Dec 4-5 -
Integrated Crop Management Conference, Ames

Dec 18 -
Ag Chem Dealer Update, Ames

Jan 8 - Crop Advantage Series, Ames

Jan 15 - Crop Advantage Series, Fort Dodge

Handy Links

Central Iowa Crop Update
Updates from an agronomist and weed nerd in central Iowa.

In this issue:

  • Drying and cooling grain
  • Fall Nitrogen Applications
  • Residue Breakdown - Facts and Myths
  • We need your help - What ate your bushels this year?
  • Upcoming meetings this winter

Drying and cooling grain

It's very frustrating to still have corn (and some soybeans) coming out of the field at higher moistures than we'd like to see in October, let alone on November 1. This is now compounded by shortages of propane that may further be a problem for many farmers. Charlie Hurburgh, grain quality specialist, has suggested that if you are facing a possible shortage of propane with significant harvest to go, only dry corn to 16-17% moisture and get it in a bin to cool it ASAP. Weather is very favorable to cool grain and as you can see in the table below, properly cooled grain will have an extended storage time even at these higher moistures.

More resources:

Fall Nitrogen Applications

I've seen manure and anhydrous ammonia going on already this fall, but it's a good time to remember why these nitrogen fertilizers are the only ones (basically) we apply in the fall and why it's important to wait until soils are 50 degrees Fahrenheit and cooling to apply them. John Sawyer has some good information in this article. You can find the 3-day historic 4 inch soil temperature for the state on this website.

Residue breakdown - Facts and Myths

I often hear that tillage and fall nitrogen application (like with AMS) break down residue faster in our cropping fields. ISU research by Mahdi Al-Kaisi found these to be myths in some research conducted several years ago. You can read the research report here and read the summary article here.

We need your help - What ate your bushels this year?

Did you see a swarm of thistle caterpillars this year? Do you think corn earworms or corn rootworms ate away some yield? ISU Extension Field Agronomists are seeking your input on what problematic insect pests you experienced this year via our #WhatAteMyBushels campaign.  

Please take a moment to complete the
short survey for us.

Upcoming meetings this winter

We've got several big educational opportunities coming up this winter that you may be interested in:

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