Project Details:

Title:
Management of important soybean diseases in Kentucky

Parent Project: This is the first year of this project.
Checkoff Organization:Kentucky Soybean Promotion Board
Categories:Soybean diseases
Organization Project Code:02-011-021
Project Year:2021
Lead Principal Investigator:Carl Bradley (University of Kentucky)
Co-Principal Investigators:
Keywords:

Contributing Organizations

Funding Institutions

Information and Results

Click a section heading to display its contents.

Project Summary

This project will focus on field research designed to evaluate different practices for management of important soybean diseases across Kentucky. The primary diseases and pathogens focused on in this proposal are soybean cyst nematode and foliar diseases (frogeye leaf spot, Septoria brown spot, and target spot). Individual projects will investigate disease management practices for management of these important diseases. The overall objective is to gain a better understanding on how to best manage these diseases and pathogens to improve soybean production in Kentucky and the region.

Project Objectives

1. To determine the effect of nematicide seed treatment on soybean cyst nematode reproduction and soybean yield across several locations in Kentucky. 2. To determine the best foliar fungicide management programs for control of foliar diseases (frogeye leaf spot, Septoria brown spot, and target spot).

Project Deliverables

Progress of Work

Final Project Results

Field research trials were conducted during the 2020 growing season at different locations in Kentucky. One trial’s objective was to evaluate the effect of nematicide seed treatments on soybean cyst nematode (SCN) reproduction and soybean yield, and the other trial’s objective was to determine the best foliar fungicide management programs for control of target spot and frogeye leaf spot. For the nematicide seed treatment trial, two locations had moderate to high levels of soybean cyst nematode (9,335 to 12,283 SCN eggs/100 cc soil). Despite the high SCN populations at these locations, no statistically significant differences were observed among treatments for plant stand, soybean yield, or SCN reproduction. For the target spot foliar fungicide trial, fungicide treatments that provided the greatest target spot control were Lucento, Miravis Top, Revytek, and Priaxor + Tilt (Fig. 1). No statistically significant differences in yield were observed for this trial. For the frogeye leaf spot foliar fungicide trial in Breathitt County, KY, fungicide treatments that provided the greatest frogeye leaf spot control were Acropolis, Froghorn, Topsin, and Miravis Top (Fig. 2). No statistically significant differences in yield were observed for this trial. For the frogeye leaf spot foliar fungicide trial in Union County, KY, fungicide treatments that provided the greatest frogeye leaf spot control were Miravis Top, Revytek, and Lucento (Fig. 3). No statistically significant differences in yield were observed for this trial. The results of these trials will help Kentucky soybean farmers make better disease management decisions.

Benefit to Soybean Farmers

Performance Metrics

Project Years

YearProject Title (each year)
2021Management of important soybean diseases in Kentucky