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Cool-Season Turfgrass Reseeding Intervals for Methiozolin

Published online by Cambridge University Press:  20 January 2017

Patrick E. McCullough  and
Diego Gómez De Barreda
Patrick E. McCullough*
Affiliation:
University of Georgia, 1109 Experiment Street, Griffin, GA 30223
Diego Gómez De Barreda
Affiliation:
Universitat Politècnica de València, Camino de Vera s/n, Edificio 3P, 46022 Valencia, Spain
*
Corresponding author's E-mail: pmccull@uga.edu
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Abstract

Methiozolin selectively controls annual bluegrass in cool-season turfgrasses, and practitioners may wish to reseed desirable species in treated areas. Field experiments were conducted to evaluate reseeding intervals for creeping bentgrass, perennial ryegrass, and tall fescue following methiozolin applications. Turfgrass establishment varied for species, application timing (0, 2, 4, or 6 wk before seeding, WBS), and rates tested (0.56, 1.12, or 2.24 kg ai ha−1). Reductions in turf cover suggest that seeding of creeping bentgrass, perennial ryegrass, and tall fescue should be delayed 2 wk after methiozolin treatments at 0.56 kg ha−1. However, reseeding should be delayed after methiozolin treatments at 1.12 kg ha−1 for approximately 4, 4, and 2 wk for creeping bentgrass, perennial ryegrass, and tall fescue, respectively. Similarly, establishment was reduced on all dates from the nontreated after 2.24 kg ha−1 was applied at 4 WBS, suggesting that reseeding should be delayed for at least 6 wk on all three species at the high rate.

Methiozolin controla selectivamente Poa annua en céspedes de clima frío, y los usuarios estarían interesados en resembrar especies deseables en las áreas tratadas. Se realizaron experimentos de campo para evaluar los intervalos de resiembra de Agrostis stolonifera, Lolium perenne y Festuca arundinacea después de aplicaciones de methiozolin. El establecimiento de los céspedes varió según la especie, el momento de aplicación (0, 2, 4 ó 6 semanas antes de la siembra, WBS), y las dosis evaluadas (0.56, 1.12 ó 2.24 kg ai ha−1). Las reducciones en la cobertura del césped sugieren que la resiembra de A. stolonifera, L. perenne y F. arundinacea debe ser retrasada 2 semanas después del tratamiento con 0.56 kg ha−1 de methiozolin. Sin embargo, después de tratamientos con methiozolin a 1.12 kg ha−1, la resiembra debe ser retrasada al menos 4, 4 y 2 semanas para A. stolonifera, L. perenne y F. arundinacea, respectivamente. Similarmente en comparación con el testigo no tratado, en todas las fechas de aplicación se redujo el establecimiento después de que se aplicó 2.24 kg ha−1 a 4 WBS, lo que sugiere que la resiembra debe ser retrasada al menos 6 semanas en las tres especies cuando se use esta dosis alta.

Keywords

Annual bluegrass, Poa annua L.creeping bentgrass, Agrostis stolonifera L.perennial ryegrass, Lolium perenne L.tall fescue, Festuca arundinacea SchrebEstablishmentseedturfgrass
Type
Weed Management—Other Crops/AREAS
Information
Weed Technology , Volume 26 , Issue 4 , December 2012 , pp. 789 - 792
Copyright
Copyright © Weed Science Society of America 

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