Suppression of Microdochium nivale by potassium phosphite in cool-season turfgrasses

Dempsey, John J.; Wilson, Ian D.; Spencer-Phillips, Peter T.N.; Arnold, Dawn L.

Abstract

Microdochium nivale (Fr.) Samuels and Hallett (teleomorph Monographella nivalis (Schafnitt) is one of the most damaging pathogens of cool-season amenity turfgrasses. The search for new or improved means to reduce susceptibility to M. nivale is an ongoing target for turfgrass research. From 2010 to 2012, field studies were conducted at the Curragh Golf Club, Co Kildare, Ireland on Agrostis canina L. ssp. canina and Poa annua L. swards, to evaluate M. nivale suppression by 14-day sequential applications of potassium phosphite (KH2PO3), applied alone and in combinations with a fungicide (iprodione) and a biostimulant. Treatment effect on turfgrass quality was also determined. Over two years of trials, phosphite treated plots, when compared with untreated controls, exhibited significantly lower percentages (p

• Journal Article Type: Article
• Publication Date: May 1, 2012
• Deposit Date: Oct 22, 2012
• Journal: Acta Agriculturae Scandinavica Section B: Soil and Plant Science
• Print ISSN: 0906-4710
• Electronic ISSN: 1651-1913
• Publisher: Taylor & Francis
• Peer Reviewed: Peer Reviewed
• Volume: 62
• Issue: SUPPL.1
• Pages: 70-78
• DOI: https://doi.org/10.1080/09064710.2012.681392
• Keywords: agrostis spp, disease suppression, poa annua , trial plots, turfgrass quality
• Public URL: https://uwe-repository.worktribe.com/output/952557
• Publisher URL: http://dx.doi.org/10.1080/09064710.2012.681392
• Contract Date: Nov 15, 2016