0715GrayLeafSpotinKansassr.cfm Leaf spot building in Kansas corn
Home News Livestock Crops Markets Hay, Range & Pasture Home & Family Classifieds Resources This Week's Journal
Agro-Culture Liquid Fertilizer

Farm Survey

Journal Getaways

Reader Comment:
by Wheat_Harvest movie

"Thanks so much for the article! These are the types of people we hope to"....Read the story...
Join other discussions.

Leaf spot building in Kansas corn



As is often the case, June rains were both a blessing and a curse for farmers. One problem stemming from the moisture is gray leaf spot that has been building in corn fields in northeast and north central Kansas, according to Kansas State University Research and Extension plant pathologist Doug Jardine.

"Rains earlier in June allowed the disease to gain a foothold in the lower canopy, and it is beginning to move upward in some fields. One field in Pottawatomie County had lesions on the ear leaf, and pollination had not begun yet," he said.

Gray leaf spot lesions tend to be rectangular, Jardine said, adding that early lesions are small, brown spots with yellow haloes that gradually expand to full-sized lesions. Expanding lesions are initially tan and later turn gray on the underside of the leaf during moist conditions.

A spray calculator to assist in fungicide application decisions is available on the K-State Department of Agricultural Economics Agmanager.info website: www.agmanager.info/crops/prodecon/decision/CropSpray.swf.

Producers can put in their own data to determine whether or not a fungicide application might be profitable.

"Many fields that are planted to more resistant hybrids, especially when rotation and tillage are used, probably would not reach the breakeven level," Jardine said.

Products containing both a strobiluron and a triazole mode of action work well, he added. Those currently registered in Kansas include Headline AMP, Quilt, Quilt Xcel and Stratego.

Web hpj.com

Copyright 1995-2014.  High Plains Publishers, Inc.  All rights reserved.  Any republishing of these pages, including electronic reproduction of the editorial archives or classified advertising, is strictly prohibited. If you have questions or comments you can reach us at
High Plains Journal 1500 E. Wyatt Earp Blvd., P.O. Box 760, Dodge City, KS 67801 or call 1-800-452-7171. Email: webmaster@hpj.com


Archives Search

Inside Futures

Editorial Archives

Browse Archives