Diseases & Disorders
All Diseases & Disorders Content
Bacterial Leaf Streak Developing at Low Level in Winter Wheat
A few winter wheat fields were found with bacterial leaf streak starting to develop at low levels. Bacterial leaf streak is usually observed starting from flag leaf growth stage. It can be severe on the upper leaves when there is prolonged leaf wetness resulting from frequent rains.
Wheat Streak Mosaic Disease Developing in Winter Wheat
Although the majority of winter wheat in the state is rated good to excellent in the recent USDA-NASS report, a few winter wheat fields in Central South Dakota have been diagnosed with wheat streak mosaic disease (WSMD) caused by wheat streak mosaic virus (WSMV).
Stripe Rust Found in Winter Wheat at Low Severity
Stripe rust was observed in the crop performance trials at the Dakota Lakes Research Farm in Hughes County and at Ideal in Tripp County. At both locations, stripe rust was at a low severity.
Winter Wheat Diseases Update: Fungal Diseases and Barley Yellow Dwarf Developing
Tan spot and powdery mildew as well as barley yellow dwarf were found developing at low levels in winter wheat fields scouted the week of May 24, 2020.
Soybean Cyst Nematode in South Dakota: History, Biology, and Management
Factsheet about Soybean Cyst Nematode history, biology and management in South Dakota
Does Early Fungicide at Tillering Result in a Profitable Yield?
Tan spot and powdery mildew pathogens are two residue-borne pathogens that can infect wheat early in the season. These diseases can lead to poor tillering, and their continued development can lead to yield loss.
2019 Wheat Field Plot Trials Summary: Fungal and Bacterial Disease Trials
This publication provides a summary of wheat trials conducted in 2019 to determine efficacy of various products in managing wheat diseases.
2019 Soybean Fungicide Field Trials Summary
This document contains results of soybean field trials conducted during the 2019 growing season to evaluate foliar fungicides to manage various soybean diseases.
2019 Corn Fungicide Field Trials Summary
This document contains results of corn field trials conducted during the 2019 growing season to evaluate foliar fungicides to manage various corn diseases.
Gibberella and Fusarium Ear Rots Developing in Corn
Corn ear rots are one of the last diseases to scout for in the corn growing season, and sometimes they are ignored or forgotten entirely. Ear rots can cause yield loss in the form of grain quality at harvest, but also cause losses during storage.