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 2016 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.
2016 Crop Scouting Enrollment Form (PDF)
Current weekly report
August 17 - Podworms at threshold level in soybean fields
Jill Scheidt, agronomy specialist with University of Missouri Extension, scouted corn and soybeans near Lockwood on August 17.
Scheidt observed corn in the ¼ black layer to full maturity stages. “Determine how close corn is to black layer by breaking the cob in half and examining how far down the kernel the milk line has moved. You can also scrape the tip of the kernel that was attached to the cob and look for a black coloration on the tip,” said Scheidt. Harvest when corn reaches 18-25 percent moisture, if storing corn, keep the moisture content below 13 percent.
Scheidt observed soybeans in the 4-5 trifoliate and podding stages. No diseases were seen. Scheidt observed 1-5 percent defoliation from insects, threshold levels are 30 percent defoliation before bloom and 20 percent defoliation during or after bloom. “In fields with podding stage soybeans, podworms were seen at threshold levels which are 4 per square foot or when 5 percent of pods are damaged. The podworms ranged in size from ½” to 1 ½” long. To identify podworms from other worms, look for 4 prolegs located in the middle of their body. Green cloverworm were also seen, but usually do not cause economic damage; green cloverworm can be identified by 3 prolegs in the middle of the body,” said Scheidt. Hero at a rate of 2.6-6.1 ounces per acre or Warrior II at a rate of .96 to 1.6 ounces per acre are labeled for podworm control in soybean. Scheidt advises to use heavier rates for larger podworms or higher populations of podworms.
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:
"Estimating Corn Grain Yield prior to Harvest" (Purdue University)
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 http://agebb.missouri.edu/weather/realtime/lamar.asp.