Effects of fungicides on creeping bentgrass health and rooting characteristics under abiotic stress

Positive effects on plant health provided by quinone outside inhibitors (QoI) and other fungicide classes have been previously reported in turfgrass agricultural crops. However, most of the research was conducted under controlled environmental rather than field conditions. Two one greenhouse experiments were repeated southern California from 2011–2013 to test ability selected fungicides retain or improve creeping bentgrass (Agrostis stolonifera L.; CBG) quality rooting characteristics when exposed drought stress induced multiple abiotic stressors, including, heat traffic. Fungicide treatments applied 14-d 28-d intervals prior during implemented periods for a total 2–5 applications consisted azoxystrobin, chlorothalonil + acibenzolar-S-methyl (ASM), fluoxastrobin, aluminum tris, penthiopyrad, pyraclostrobin, pyraclostrobin boscalid tested against nontreated control (NTC). No disease symptoms present any trial site, but presence pathogens not determined. Although increased root diameter comparison NTC observed plants treated with azoxystrobin boscalid, volume study, no significant differences found studies. Moreover, none improved turf normalized difference vegetation index (NDVI) experiments. Results imply that offer little secondary benefits regard such as alleviation arid environments, pressure is minimal absent.