Loren Giesler - Extension Plant Pathologist

Loren Giesler

(faculty)
Work Plant Sciences Hall (PLSH) 448
Lincoln NE 68583-0722
US
Work 402-472-2559 On-campus 2-2559

Twitter: @MulletManLG
YouTube: Soybean Diseases on UNL CropWatch
Website: Soybean Disease section of CropWatch Plant Disease Management
Education
PH.D., University of Nebraska - Lincoln, 1998

Dr. Giesler provides statewide leadership for extension plant pathology programs in soybeans and turfgrass diseases. He is the team leader for the Extension Plant Pathology Team which is a Nebraska group of extension Plant Pathologist responsible for disease management programs throughout Nebraska.  His main program focus is in soybeans and has included research projects on Bean Pod Mottle Virus, Soybean Cyst Nematode, Foliar Diseases and seedling diseases including Phytophthora root and stem rot.  He conducts disease management studies on soybean to evaluate the efficacy of soybean seed treatment fungicides and foliar products.  He served as a national leader for identification of soybean rust, coordinator for national soybean rust sentinel monitoring efforts from 2003 through 2012, and toured South America rust fungicide efficacy trials in 2004 and 2005. Dr. Giesler is currently working on several studies on soybean cyst nematode to improve management programs for this significant pest of soybean.  Through continued support of the Nebraska Soybean Board a free soil sampling program for SCN is operated in his program that provides soybean farmers a way to determine if SCN is present in their fields.

Disclosure
Frogeye leaf spot in soybean
Frogeye leaf spot in soybean

Frogeye Leaf Spot Starting to Show Up in Soybean August 3, 2016

While the fungal disease frogeye leafspot (Cercospora sojina) is not common across Nebraska, it is becoming more widespread. Here's how to identify and manage it in soybeans.

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White mold in soybean
White mold in soybean

Sclerotinia Stem Rot (White Mold) in Soybean: What to Look For July 28, 2016

This article explores how to identify Sclerotinia stem rot (white mold) in soybean fields and differentiate it from other diseases which also may be occurring at this time.

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Soybean roots with smaller soybean cyst nematode (SCN) cysts (red arrows) and larger nitrogen nodules (blue arrows).
Soybean roots with smaller soybean cyst nematode (SCN) cysts (red arrows) and larger nitrogen nodules (blue arrows).

SCN Scouting Recommendation Changes; SCN Resistance Possible July 8, 2016

Mid-summer is an effective time to scout for soybean cyst nematode (SCN) using either the visual or soil test method. This story describes both methods. If SCN is identified, a follow-up soil test approximately six years later can help assess effectiveness of treatment efforts as well as identify SCN resistance.

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ILeVO Seed Treatment Shows Promise for Sudden Death Syndrome April 6, 2016

As Nebraska farmers prepare for soybean planting, they have a new option for controlling sudden death syndrome (SDS).

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Disclosure

Dr. Giesler has disclosed a significant financial interest in membership and management of Field Screen, LLC. Field Screen, LLC has received compensation in the last 12 months for pesticide testing from the following companies: BASF, Bayer Crop Science, Syngenta Crop Protection, Arysta Life Sciences, Valent U.S.A. Corporation and FMC Corporation. In accordance with its Conflict of Interest policy, the University of Nebraska-Lincoln’s Conflict of Interest Review Committee has determined that this must be disclosed.

Field Screen, LLC is a company that specializes in disease efficacy testing for developmental fungicides in southeastern Missouri under extremely conducive environmental conditions for disease development. This outside activity provides Dr. Giesler with additional insight into agricultural chemical development and improves his ability to assist farmers and commercial agricultural clientele with their management decisions. Outside business activity is encouraged at the University of Nebraska as a way to improve faculty insight and promote economic development.