Dr. Erin Hodgson started working in the Department of Entomology at Iowa State University in 2009. She is an associate professor with extension and research responsibilities in corn and soybeans. She has a general background in integrated pest management (IPM) for field crops. Dr. Hodgson's current extension and research programs are focused on improving corn and soybean production by using IPM tactics to protect yield and increase overall farmer profits. Among other projects, she oversees insecticide efficacy evaluations for soybean aphids, Japanese beetles, and aphids in corn. Erin also helps manage emerging field crop pests and invasive species. 

Profile picture of Erin Hodgson

Dr. Daren Mueller is an assistant professor and extension plant pathologist at Iowa State University. He is also the coordinator of the Iowa State University Integrated Pest Management (IPM) program. Dr. Mueller eraned his bachelor's degree from the University of Wisconsin-Madison in 1996, and his master's degree and doctorate in Plant Pathology from the University of Illinois-Urbana in 1999 and 2001. His main research interests involve understanding the biology and management of soybean diseases. The Iowa State IPM program, among other things, develops several publications about field crops pests, leads the ISU Field Extension Farm, and is involved in several STEM education projects. 

Daren Mueller

Dr. Alison Robertson is an associate professor of plant pathology and microbiology. She provides extension education on the diagnosis and management of corn and soybean diseases. Her research interests include Pythium seedling disease of corn and soybean and Goss's wilt. Dr. Robertson received her bachelor's degree in plant pathology in 1991 from the University of Kwazulu-Natal, Pietermaritzburg, and came to the United States in 1999 to pursue a doctoral degree in plant pathology at Clemson University. She started working at Iowa State University in May 2004.

Adam Sisson is an extension specialist with the Iowa State University Integrated Pest Management (IPM) program. Sisson focuses on the development of publications and other educational resources for farmers, agribusiness, and students. He received his bachelor's degree in agronomy and environmental studies in 2006 and a master's degree in sustainable agriculture in 2009; both from Iowa State University. 

Adam Sisson

Dr. Mark Licht is an assistant professor and extension cropping systems specialist with Iowa State University Extension and Outreach. His extension, research and teaching program is focused on how to holistically manage Iowa cropping systems to achieve productivity, profitability and environmental goals. Research is centered around varied aspects of soybean, corn and cover crop management as well as agronomic implications of precision technologies.

Mark Licht
February 12, 2017 9:47 AM

The University of Illinois Plant Clinic recently published results of their 2016 herbicide resistance screening program.  For a $50 fee the Clinic analyzes...

Herbicide Resistance
February 11, 2017 11:09 AM

Planning on attending the Commodity Classic in San Antonio in March?   Have experience with herbicide resistant weeds?  

If you are involved in crop production in Iowa, the answer to the second question is yes.  The Weed Science Society of America is sponsoring a listening session at the...

Herbicide Resistance
February 6, 2017 10:15 AM

Iowa State University Extension and Outreach will offer a Field Crop Scout School on Saturday, Mar. 25, at the Scheman Building in Ames. Designed for beginning crop scouts, the day-long course features sessions on crop growth and development, weed, disease and insect identification, along with...

Crop Production, Insects and Mites, Pesticide Education, Plant Diseases, Weeds
January 27, 2017 8:04 AM

The second annual Soil Health Conference will be held in Ames, Iowa at the Scheman Building at Iowa State University on February 16-17, 2017.

This two-day soil health conference will host a number of renowned scientists, agronomists, farmers, and agriculture business personnel as...

Soils, Soil Management
January 25, 2017 2:39 PM

“History is largely a record of human struggle to wrest the land from nature, because man relies for sustenance on the products of the soil. So direct, is the relationship between soil erosion, the productivity of the land, and the prosperity of people, that the history of mankind, to a...

January 20, 2017 1:30 PM

I've been asked several times at meetings this winter if it would be possible to identify Palmer amaranth in conservation plantings at this time of year.  My response has been 'I think so, but I've never tried'.  To avoid having to use that answer in the future, I went to a field planted to...

January 19, 2017 3:14 PM

Making sound soil fertility management decisions is an important part of successful crop production, on both an economic and environmental level. Iowa State University Extension and Outreach will be offering a two-day short course focusing on principles of soils, soil fertility and nutrient...

Soil Fertility
January 18, 2017 5:57 AM

If you grow soybean your help is needed. We are asking for yields and management information that is used for your soybean fields. The goal behind this project identify key factors that prohibit soybean farmers from obtaining yields that are potentially attainable on their respective farms. Or...

Crop Production
January 15, 2017 8:43 AM

I recently had a discussion with a farmer regarding the Palmer problem, and he asked if I were 'King for a Day' how would I change Iowa's noxious weed law.  I came up with four suggestions regarding classifying weeds as noxious:

1)  Eliminate any weed from the list that is widely...

January 11, 2017 5:00 PM

Soil Temperature at the 4-inch depth is important to crop establishment even though seed placement is usually at depths of less than 2 inches.  Soil temperature of below 50F is important to responsible fall anhydrous application.  The estimated county soil temperature in Iowa is derived from...

Crop Production
December 29, 2016 8:22 AM

People involved in weed management for at least 20 years probably remember corn being damaged by glyphosate drift when Roundup Ready soybean were first introduced.  The extensive damage was due to the high susceptibility of corn to glyphosate; equipping sprayers with low-drift nozzles and the...

December 22, 2016 7:56 AM

The recent approval of the new dicamba products approved for use on Xtend soybean has been received with mix feelings by the agricultural community; many are excited about the new options to help with the growing herbicide resistance problem, whereas others are concerned about the risks...

December 12, 2016 7:34 AM

The 2017 version of WC 94 - Herbicide guide for Iowa corn and soybean production - is now available.  The guide includes several tables providing information on herbicide effectiveness, composition of package mixes, and herbicide sites of action.  In addition the guide...

December 5, 2016 9:29 AM

I’ll admit it, I enjoy the laughing weeds in Syngenta’s Acuron advertisements. The Acuron Chronicles remind me of something written by Dutch Sylwester more than 60 years ago.  Dutch was ISU’s extension weed scientist from 1945 to 1975, and his...

December 2, 2016 8:29 PM

This week during ICM Conference, I talked about a resistance management plan for soybean aphid. My presentation abstract can be downloaded now (ICM Proceedings, pg. 97). In order to prolong the efficacy of foliar insecticides, farmers need to implement more...

Insects and Mites
November 21, 2016 3:37 PM

The Crop Protection Network (CPN; is a working group made up of state university and provincial Extension specialists, and public/private professionals. This group produces collaborative Extension outputs for...

Plant Diseases
November 7, 2016 3:30 PM

The effect of cover crop on crop yields, soil health, and nitrate-nitrogen (N) leaching is complex and variable from year to year. From an environmental point of view, the higher the rye biomass production at termination day, the higher the likelihood of increasing soil organic carbon and...

Crop Production
November 1, 2016 10:40 AM

Building on the success of the Inaugural Soil Health Conference in 2016, the second Soil Health Conference will be held in the Scheman Building at Iowa State University on February 16-17, 2017. This conference is...

Soil Management
October 25, 2016 9:04 AM

Fall is a great time to take soil samples and test the soil to see where the nutrient levels are. The results of soil tests can help make critical management decisions for the next growing season. Soil testing starts with the soil sample. The small sample of soil collected serves as the basis...

Soil Fertility
October 20, 2016 2:44 PM

Iowa State University Extension and Outreach is now offering an online review course for individuals taking the next Iowa Certified Crop Advisers Examination on February 3, 2017. This course is exclusively online and will not have a...

Pesticide Education
October 17, 2016 1:03 PM

There is a lot of discussion lately about grain storage and quality. I wanted to make you aware of webinars that may be of interest to you. I was part of a regional project that organized a 4-part webinar series focused on stored grain IPM in the north central region. Here are the topics and...

Grain Handling and Storage
October 17, 2016 6:26 AM

One of the more popular pages on the old ISU Weed Science website was the Herbicide Ad Hall of Shame. It featured ads that I deemed went against Integrated Pest Management (IPM) principles. Recently, two of my colleagues nominated the attached ad that promotes the effectiveness of dicamba in...

October 12, 2016 3:31 PM

The weather forecast is calling for temperatures to dip close to freezing tonight (10/12/16) in south central/southeast Iowa, which could mean that we may see a light frost. What does...

Crop Production
October 7, 2016 1:57 PM

A grower provided us a sample of the seed mix used on one of the conservation plantings where Palmer amaranth developed following planting. We were able to extract Amaranthus seed from the native seed mix. Since it is difficult, if not impossible, to visually differentiate the ...

Weeds, Herbicide Resistance
October 7, 2016 9:32 AM

In my previous post, I discussed six key factors to keep in mind when considering hybrid choices for 2017, including: cost, disease tolerance, insect package...

Crop Production