Late Season Stratego Fungicide Application

INTRODUCTION

Fungicides can be effective in controlling fungal diseases in soybeans. However, response to fungicide application is most likely when there is a significant disease pressure. There is a need to test different fungicides in order to recommend to producers the likelihood of obtaining a profitable return on fungicide investment in soybeans. The objective is to determine the efficacy of foliar fungicides (Stratego) in controlling soybean fungal diseases.

MATERIALS AND METHODS

Treatments listed in Table 1 are applied as below. Each location had untreated check plots (no fungicide applied) versus plots treated with fungicide (Stratego). Stratego’s active ingredients are Propiconazole, 11.4% (CAS No. 60207-90-1) and Trifloxystrobin, 11.4% (CAS No. 141517-21-7). Important to note, soybean disease pressure was very low to non-existent at each location.

RESULTS AND DISCUSSION

No significant differences were found when fungicides were applied. There was about a half bushel difference between the fungicide treated plots and the untreated check plots.

SUMMARY

Disease pressure was very low to non-existent at each location. Fungicide results indicated there were no significant differences found when fungicides were applied.

Modified from: https://www.sdstate.edu/sites/default/files/2016%20SERF%20AR%20FINAL.C.pdf

By: Connie Strunk

ACKNOWLEDGMENTS

Funding for this research project was provided by the South Dakota Soybean Research and Promotion Council, SDSU Extension, SD Agriculture Experiment Station and the Northeast Research Farm near South Shore SD. The authors would also like to thank the soybean producers who participated in this project.