Previous crop scouting reports

June 7  PDF | audio

May 31  PDF | audio
May 24  PDF | audio
May 17  PDF | audio
May 10  PDF | audio
May 3  PDF | audio

April 26  PDF | audio
April 19  PDF | audio
April 12  PDF | audio
April 5  PDF | audio

March 29  PDF | audio
March 22  PDF | audio
March 15  PDF | audio
March 8  PDF | audio
March 1  PDF | audio

February Update  PDF | audio
January Update  PDF | audio




Crop scouting reports

Crop scouting is an essential part of integrated pest management (IPM). Scouting programs are designed to protect and maximize crop yield and quality while minimizing the risk associated with pesticide use. 

Each week, an extension agronomy specialist scouts fields in Barton County and then report their findings through an automated phone service and email message. The message will go out to everyone signed up for the program.

The weekly field scouting report is sponsored by University of Missouri Extension and Barton County Extension.  To receive the 2016 weekly scouting reports, print the Crop Scouting Enrollment Form, complete and return with payment to Barton County Extension, 801 E 12th, Lamar, MO 64759 or contact the MU Extension Center in Barton County, 417-682-3579.

The cost of the program is only $35 per phone number, $95 for three numbers and $30 per phone number for those with four or more. 

Crop Scouting Enrollment Form (PDF)

Current weekly report

June 14 - Nitrogen deficiency not seen in most fields

PDF      Audio

Jill Scheidt, agronomy specialist with University of Missouri Extension, scouted fields north of Golden City for the June 14 crop scouting update.

Corn was in the 8-12 leaf stage and did not show visual signs of nitrogen deficiency.

According to Peter Scharf, the best time to determine if nitrogen deficiency is present is once the soil is no longer saturated. “If making a rescue nitrogen application on corn 4 foot or less tall, broadcast or in-row urea causes less than an average of 4 bushel loss when using a low dust formula on dry leaves. Agrotain coated urea improved yield response on 1-2 foot-tall corn, but not on 3-4 foot-tall corn; the volatized urea may be captured by the leaves of taller corn, reducing the need for Agrotain. Dribble UAN between rows instead of broadcasting to avoid severe yield loss due to leaf burn. If possible only apply nitrogen in deficient areas to get the most economical benefit,” said Scharf.

Scheidt observed a small amount of rust, but not enough to warrant a fungicide. “Usually rust occurs too late in the season to hurt yield,” said Scheidt.

Scheidt observed flea beetle and armyworm feeding in the whorl. “They are common and rarely warrant insecticides,” said Scheidt.

Soybeans were in the 3rd trifoliate stage.

Scheidt observed one-inch waterhemp. “Remember, the best time to treat weeds are when they are less than 4” in height or diameter. Also, if you are using the new Xtend system, it is important to keep in mind dicamba will not kill large weeds and should be used to treat weeds under 4” in height and diameter,” said Scheidt.  

The weekly field scouting report is sponsored by University of Missouri and Barton County Extension. For more information on the scouting report, or to learn how to receive the information earlier by telephone, contact the Barton County Extension Center at (417) 682-3579.


Links to other resources:

Recommended fungicides for stripe rust

University of Florida velvetbean caterpillar information

"Estimating Corn Grain Yield prior to Harvest"  (Purdue University

“Grain Fill Stages in Corn” article from Purdue University

2015 Pest Management Guide

Make the most from late planted soybean

Assessing soybean plant stands


Corn pollination


Tiller population in wheat


Scouting for Podworms in soybeans

Scouting for Corn Earworms in corn

Scouting for Armyworms in wheat


Current soil temperatures in Lamar are updated every five minutes and can be found at