June 28, 2017   
  Issue 7  

Prepared by

Paul Kassel

Extension Field Agronomist



(712) 262-2264

Email: kassel@iastate.edu 



Serving Clay, Buena Vista, Dickinson, Emmet, Hancock, Kossuth, Palo Alto, Pocahontas, Sac and Winnebago Counties



The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, and marital or family status. (Not all prohibited bases apply to all programs.) Many materials can be made available in alternative formats for ADA clients. To file a complaint of discrimination, write USDA, Office of Civil Rights, Room 326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call 202-720-5964.


The Iowa State University Extension and Outreach Policies Page.  


























RR Xtend, soybean growth stage. The approved dicamba herbicide products can be applied up to and including beginning bloom - also called the R1 growth stage. The R1 stage usually last about 7 days.
Therefore dicamba applications should be completed before the R2 stage. The R2 stage is defined as an open flower at one of the two top nodes of the main stem and at least one of these two upper nodes has a fully developed leaf.
Corn rootworm (CRW).  Check fields for damage from CRW feeding. Cornfields should be checked for root damage - regardless of traits or treatments. Erin Hodgson has some updated CRW management info in ICM News.
Nitrogen and Water Week. A field day on nitrogen (N) fertilizer use and nitrate losses will be held from 9:15 to 12:15 on June 29 at the Northwest Research Farm at Sutherland.  
Profitable rates of N, cover crops, N inhibitors, N application timing and their effects on nitrate levels in tile drainage water will be discussed.
Cost is $25 and includes lunch. Walk in registrations are welcome. Two (1.5 SW, 0.5 NM) CCA credits are available.
Northwest Research Farm field day. The summer field day at the Northwest Research Farm is on July 12 from 9:00 to 12:30. Speakers include Chad Hart, Erin Hodgson, Ryan Bergman, Joel DeJong and Paul Kassel.

Prepared by Paul Kassel, Extension Field Agronomist

Phone: (712) 262-2264, Email: kassel@iastate.edu