Downy mildew caused by Pseudoperonospora cubensis is the most destructive foliar disease affecting cucurbit crops. Genomic studies by Dr. Lina Quesada-Ocampo and colleagues at North Carolina State University showed that different isolates preferentially infect different cucurbit crops. From this information, a multiplex PCR-based assay was combined with spore trapping to identify which crops are most at risk. These results can facilitate timely and crop-specific fungicide application prior to appearance of symptoms in sentinel plots.
Matthew is evaluating fungicide sensitivity of CDM to single fungicide products and efficacy of forecasters in controlling CDM and spore trapping of P. cubensis using impaction spore traps.
CucCAP plant pathologist, Mary Hausbeck joined the July 28, 2021 podcast to talk about a group of pathogens called oomycetes
Downy mildew has been confirmed on cucumbers in four Michigan counties. CucCAP vegetable pathologist, Mary Hausbeck recommended that cucumber growers take agressive action due to recent humid conditions and presence of cucurbit downy mildew spores.
CucCAP vegetable pathologist, Dr. Tony Keinath discusses fungicide stewardship.
The dates for the 2021 EXPO are set for Dec. 7-9, 2021.
First cucurbit downy mildew spores identified in air samples in Allegan County
by: Mary Hausbeck, Annika Peterson and Doug Higgins
In this study, researchers at Cornell collected 252 strains of the pathogen from across New York State and sequenced portions of their DNA in order to characterize the genetic structure of the pathogen population.