Integrated Crop Management News

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.

ISU Extension and Outreach Offers Iowa Drainage School

July 31, 2013

By Kapil Arora and Brent Pringnitz, ISU Extension and Outreach

Agricultural drainage is becoming increasingly important due to the critical role it plays for Iowa's emerging bio-economy. Drainage systems that are properly designed and operating are essential to achieving excellent agricultural production capability.

The Iowa Drainage School is being offered to address these issues on Aug. 20-22, 2013, at the Borlaug Learning Center on the Northeast Research and Demonstration Farm near Nashua, Iowa.

Time to Assess Corn Rootworm Activity in Iowa

July 31, 2013
Western Corn Rootworm adults

By Erin Hodgson and Aaron Gassmann, Department of Entomology

Corn rootworm egg hatch was delayed this year because of cool spring temperatures, and adults are beginning to emerge throughout Iowa. Now is a good time to assess root injury caused by larvae and also monitor for adult activity in corn.

 

Larvae

Short Corn and Variable Growth

July 30, 2013
Corn planting progress in Iowa

By Roger Elmore, Mahdi Al-Kaisi and Elwynn Taylor, Department of Agronomy
Content originally written and published in 2013

“Knee high by the fourth of July!” Some of us grew up with that old saying which either foreshadowed disaster or forecast bumper yields. If corn was knee high by the fourth, most thought it would mature before the first fall frost. That was good news! As we look back, the statement perhaps was valid back when the first target corn planting date was mid-May.

Soybean Vein Necrosis Virus Identified in Iowa

July 18, 2013
Foliar symptoms of SVNV on soybean leaves

By Daren Mueller, Department of Plant Pathology and Microbiology

Soybean vein necrosis virus (SVNV) was first confirmed in Iowa last season. Last year we did not see SVNV until August. This past week we identified SVNV in several locations in Iowa. It is not known yet if earlier symptoms may increase chances of yield loss. We will continue to monitor and provide updates.

Hail and Fungicides Update 2013

July 17, 2013
Hail machine "hailing" soybean plants

By Adam Sisson, Integrated Pest Management, and Daren Mueller, Department of Plant Pathology and Microbiology

When crop hail damage occurred in the past, farmers could either replant or see if crops would grow out of the damage, depending on extent and timing of hail. However, there have been significant changes in production practices for corn and soybean, especially concerning fungicide use and the labeling of fungicides for the mitigation of plant stress such as hail injury.

Rinsing and Recycling Caged Tanks Webinar

July 1, 2013
Caged pesticide tank

By Kristine Schaefer, Department of Entomology

Larger farming operations have changed how farmers purchase and handle pesticides. Caged pesticide tanks (mini-bulk containers) have replaced the 2.5 gallon containers previously used on farms. Often these tanks have not left the farms but remain stockpiled or used for unintended purposes.