Dollar Spot Control in a Creeping Bentgrass Golf Green with Two Commercial Products Based on Microbial Fermentation and Micronutrients

Dollar spot (caused by Sclerotinia homoeocarpa F.T. Bennett) is one of the most important diseases affecting creeping bentgrass (Agrostis stolonifera L.) golf course greens. The objective of this research was to test two commercial products for dollar spot control, one based on microbial fermentation and the other a micronutrient, comparing their control level with a synthetic fungicide (iprodione). The test was made over two dollar spot-infected creeping bentgrass greens in autumn 2014 and summer 2015. In both experiments, the products inhibited the normal development of the disease at some point, although iprodione achieved a better control.