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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.


John J. Dempsey

Dawn L. Arnold


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


Dempsey, J. J., Dempsey, J. J., Wilson, I. D., Spencer-Phillips, P. T., & Arnold, D. L. (2012). Suppression of Microdochium nivale by potassium phosphite in cool-season turfgrasses. Acta Agriculturae Scandinavica, Section B - Soil and Plant Science, 62(SUPPL.1), 70-78.

Journal Article Type Article
Publication Date May 1, 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
Keywords agrostis spp, disease suppression, poa annua , trial plots, turfgrass quality
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