Karen McMahon has been editor of Farm Industry News since 2000. She joined the staff in 1998 as senior editor and previously worked on the company’s National Hog Farmer magazine.

Karen grew up on a crop and livestock farm outside of LeMars, IA, and earned her journalism degree from South Dakota State University. After college, she worked on the local newspaper as farm editor and later started writing for various livestock and crop magazines.

She has written extensively about trends and technology related to corn and soybean production, the equipment needed for row-crop farming, and livestock production.   

Posts by Karen McMahon

Game changer: Multiple-herbicide-resistant weeds in Minnesota, North Dakota

Herbicide-resistant weeds has continued to spread from the southern Corn Belt to northern states, including Minnesota and North Dakota. Now, multiple....More

$550 cash rent on 330 acres in Iowa

Some cash rents for 2012 are sky high, as shown by a farmer who reported a $550 rental price on 330 acres in west-central Iowa....More

DuPont's Pioneer, Plant Sensory Systems share nitrogen use traits

DuPont's Pioneer Hi-Bred will work with Plant Sensory Systems to develop traits for more efficient use of nitrogen in hybrids....More

Weed resistance ensures job security for weed scientists

Weed scientists have built-in job security. University of Illinois weed scientist Aaron Hager dryly joked about his secure job during a lecture on....More

“Silage yields are the most variable I have ever seen.”

Silage harvest has started on the Kent Lock farm near Avon, IL. Yields are variable and 20% lower overall....More

"This corn crop is just not there."

Team FIN member Kent Lock estimates his Avon, IL, corn crop won't yield as high as he had thought earlier in the summer....More

How fast can corn be planted?

How fast can corn be planted? After watching corn planting progress this year, it is clear that growers can cover a lot of ground fast. Most of the....More

Corn planting races to completion

The first reports of completed corn planting are coming in. A central Illinois grower e-mailed today that he just finished planting his largest....More

Wet soils, delayed planting may mean changes in tillage, herbicide application

A drive through south-central Minnesota and northeast Iowa on Tuesday found farmers hitting the fields with tillage equipment. We spotted multiple....More

High prices continue for good Midwest farmland

Prices paid for farm ground have surged over the past several months. Good farmland in my home area in northwest Iowa, for example, just sold for $....More

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