Links to these articles are strongly encouraged. Articles may be republished without further permission if published as written and if credit is given to the author, Integrated Crop Management News, and Iowa State University Extension and Outreach. If articles are used in any other manner, permission from the author is required.
While the number of fields with resistance to Cry3Bb1 corn is small at this time in Iowa, it should be noted that similar damage has been reported in other states. Research highlights the importance of incorporating integrated pest management and insect resistance management into field crop production.
Increasing corn yield and harvest of cornstalks for feed, bedding or bioenergy production are generating numerous questions about phosphorus (P) and potassium (K) concentrations in cornstalks and removal.
The availability of new products to manage plant-parasitic nematodes that feed on corn has increased the interest in the occurrence of these pests in Iowa. The results of testing for nematodes that feed on corn in Iowa from 2000 through 2010 were recently summarized and the main findings are contained in this article.
The northwest Iowa fall survey of subsoil moisture completed by Iowa State University in November shows well below average amount of subsoil moisture. Subsoil moisture levels are checked in the fall in many northwest Iowa counties through this survey.
By Laura Jess, Plant and Insect Diagnostic Clinic and Erin Hodgson, Department of Entomology
A new, pocket-sized identification card for stink bugs in the Midwest will make identification of these insects much handier. Iowa State University Extension has just released the new identification card from authors Laura Jesse, Erin Hodgson, Donald Lewis, Matt O’Neal and Adam Sisson. The card was made possible with funding from a 2011 North Central IPM Center mini-grant.
The popular Weed Identification Field Guide is now available electronically as an e-book and, for the first time, downloadable on iPad.
By Jim Rouse, Agronomy Department
Final results of the 2011 Iowa Crop Performance Tests for corn and soybeans are now available online at the Iowa State University Crop Testing website and as downloadable publications from the ISU Extension Online Store. All single-location and district data are available for online viewing and can also be downloaded as Excel files from the crop testing site.
Plant-parasitic nematodes can reduce both corn and soybean yields in Iowa. Fall is an ideal time to sample fields for the soybean cyst nematode (SCN), but not for nematodes that feed on corn. Fall SCN sampling guidelines are discussed in this article.
Farmland in western Iowa and eastern Nebraska affected by flooding early this year and not planted to any crop has potential economic and soil environmental consequences if the soils are left unattended.
It is almost time that anhydrous ammonia (NH3) applications could begin, however, many soils in Iowa are quite dry this fall. So, can anhydrous ammonia be applied to dry soil? Will it be held in dry soil?
