2013 AND 2014 FIELD PLOT TRIALS FOR BIOLOGICAL CONTROL OF FUSARIUM HEAD BLIGHT IN SOUTH DAKOTA USING BACILLUS AMYLOLIQUEFACIENS STRAINS

摘要

Fusarium Head Blight (FHB) or Wheat Scab, caused by Fusarium graminearium is an economically important disease of wheat and barley. Yield losses can be controlled or reduced through the use of fungicides alone or in combination with biological controlagents (BCAs). Field plot trials were conducted in Brookings, South Dakota to analyze the efficacy of Bacillus amyloliquefaciens strains 1BA and 1D3 in biological control of FHB. Spray applications of Bacillus BCAs alone or in combination with Prosaro~R(fungicide) and/or Induce NIS (non-ionic surfactants) and/ or colloidal chitin were done on Briggs spring wheat heads at Feekes 10.51. In the 2013 Field Plot trials, multiple treatments exhibited statistically significant reduced levels of DON in comparison to the untreated control. Bacillus strain 1BA amended with colloidal chitin, Prosaro and plant oil reduced DON levels significantly (P=0.10), in comparison to treatment with Prosaro alone. Only the DON results from 2013 plots are presented in this abstract, as the other results were presented for the 2013 FHB Forum.