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Angie Peltier


Angie Peltier
Former Extension Educator, Commercial Agriculture



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Hill and Furrow

Current topics about crop production in Western Illinois, including field crops research at the NWIARDC in Monmouth.

Busy, busy, busy

Posted by Angie Peltier -

This week has been and continues to be extremely busy for Extension personnel (me) at the NWIARDC. There are plenty of agronomic issues of importance this time of year, but I have no time to address them in the blog. Why so busy? Introduction to Vegetable Disease Tuesday and Wednesday nights I am teaching the...

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Figure. Japanese beetles feeding and mating on corn, June 19, 2012.
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Japanese beetles are abundant

Posted by Angie Peltier - Insects

When walking along a tree line on the NWIARDC last week, I noticed large dark spots on some of these weeds along this line. Upon closer inspection (getting out of the car), these 'spots' were Japanese beetles. A lot of Japanese beetles. Japanese beetles are oval shaped and have an iridescent metallic sheen. They have a green head and thorax and copper colored outer wings with a green st...

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Figure. Stunting and nutrient deficiency symptoms attributed to sulfonylurea carryover injury in corn.

Damage from herbicides applied in 2011

Many producers have experienced damaged crops this year due to carryover from herbicides they applied in 2011. Dr. Aaron Hager, University of Illinois Weed Scientist, has said that he has seen more carryover herbicide injury this year than in the past 10 years combined. Why might this be? Herbicides with residual activity often have a rotation interval specified on their respective labe...

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Figure. Large volunteer corn in Warren County, IL, June 2012.

Volunteer corn may contribute to development of Bt resistance in pest populations

In addition to potentially robbing crop yields, volunteer corn, or corn that grows on its own, rather than being deliberately planted, may increase the risk of Bt resistance developing more rapidly in target insect populations ( Figure ). Bt trait technology has been deployed by many seed corn companies . Bacillus thuringiensis , a bacterium, naturally produces proteins th...

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Figure. Large volunteer corn in Warren County, IL, June 2012.
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Huge weeds in Western IL and why waiting to spray may rob yields

Posted by Angie Peltier - Weeds

In my daily commute between Galesburg and Monmouth, I have noticed many fields with high populations of very large weeds ( Figure ). The majority of these fields have either volunteer glyphosate-resistant corn or broadleaf weeds. Many of the weeds are knee high (~24 in.). Other fields are completely clean of weeds and others have obviously applied a post-emergence herbicide with...

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Figure. Deviation from normal of 2012 precipitation at the NWIARDC.
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Hot dry weather conditions and yield implications

The USDA-National Agricultural Statistics Service (NASS) released their Weekly Weather and Crop Bulletin on June 5 th . In this report, climatologists from the National Drought Mitigation Center released their drought monitor survey . These experts are confirming what we all have been feeling, 86.1% of Illinois is experiencing a...

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