Wayne Ohnesorg
faculty
Work
1305 S 13th St
Norfolk
NE
68701-6655
US
Work
402-370-4044
On campus, dial 7-4044
icon-academic-capEducation
icon-bookmark-starAwards & Honors
Location: Madison County
Focus Areas: Entomology, integrated pest management (IPM), mobile scouting tools for agriculture, and mobile apps.
Private Pesticide Training Offered by Zoom for 2022
March 9, 2022
Nebraska Extension will be offering five private pesticide applicator trainings via Zoom in March and April. Each one will have a different agricultural area of focus, including alfalfa, corn, soybean, pasture and wheat.
Confronting Cropping Challenges Program to be Offered in December 2021
November 17, 2021
The fifth annual Confronting Cropping Challenges program will highlight cropping issues for northeast Nebraska producers throughout 2021, such as fall armyworms and tar spot.
Private Pesticide Training Offered by Zoom
February 4, 2021
Northeastern and Northcentral Nebraska residents have several options for private pesticide applicator training sessions throughout March and April.
Although at Low Levels, Soybean Aphids Are in Northeast Nebraska
July 15, 2020
The infestations appear to have occurred recently, as the aphids were only observed on leaves that had not yet expanded completely. The economic threshold for late vegetative through R5 stage soybeans is 250 aphids per plant with 80% of the plants infested and populations increasing.
Soybean Aphid Scouting and Management
July 15, 2020
The current economic threshold for soybean aphids is 250 aphids per plant with 80% of the plant infested and populations increasing. The article discusses the basis for this threshold and two scouting methods, including a speed scouting app, and management guidelines.
Confront Crop Challenges and Update Applicator Certification
November 27, 2018
Confronting Crop Challenges will be the focus of five meetings to be held in northeast Nebraska this December. Each offers updates on recent crop and pest issues in eastern Nebraska as well as pesticide applicator recertification training.
August Prime Time for Soybean Aphids
August 2, 2018
Soybean aphid populations can explode in August under favorable conditions. Vigilant scouting is recommended, especially in northeast Nebraska where populations have historically been highest, to allow for timely management decisions.
Scouting and Managing Soybean Aphids
August 2, 2018
Recommendations for scouting and managing soybean aphids, including why the 250-aphids-per-plant threshold is used. Two tools―an app and Excel worksheet―can help speed up scouting in the field and indicate when treatment is warranted.