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Integration of Oxyfluorfen into Strawberry (Fragaria×ananassa) Weed Management Programs

Published online by Cambridge University Press:  20 January 2017

Oleg Daugovish ,
Steven A. Fennimore  and
Maren J. Mochizuki
Oleg Daugovish*
Affiliation:
University of California Cooperative Extension, Ventura, CA 93003
Steven A. Fennimore
Affiliation:
University of California, Davis, Salinas, CA 93905
Maren J. Mochizuki
Affiliation:
University of California Cooperative Extension, Ventura, CA 93003
*
Corresponding author's E-mail: odaugovish@ucdavis.edu.
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Abstract

Field trials were conducted at three California locations near Oxnard, Salinas, and Watsonville from 2002 to 2006 to evaluate broadleaf weed control and tolerance of strawberry to oxyfluorfen. Oxyfluorfen applied at 0.3 and 0.6 kg/ha before strawberry transplanting reduced densities of broadleaf weeds such as California burclover, hairy nightshade, little mallow, shepherd's-purse, and yellow sweetclover 70 to 100% compared with nontreated plots but did not control horseweed. Oxyfluorfen application resulted in 9% and 19% greater visible injury to strawberry for the two rates, respectively, compared with nontreated plants in 1 yr but did not reduce strawberry yield. After oxyfluorfen application at 0.6 kg/ha, strawberry plants had 5 to 48% more injury than nontreated plants in subsequent years but early-season yields were similar. Hand-weeding time was reduced 30 to 50% compared with nontreated plots regardless of oxyfluorfen rate. Both water-based and solvent-carrier formulations of oxyfluorfen resulted in similar weed control, strawberry injury, and fruit yield. Plastic mulch installation after oxyfluorfen application but before planting reduced injury to strawberry more than 50% compared with nonmulched beds. Oxyfluorfen applied 30 d before strawberry transplanting had similar crop injury and yield to applications made 15 and 7 d before planting. These results suggest that oxyfluorfen can be used safely in California plasticulture strawberry production for control of common weed species and to reduce labor inputs associated with hand weeding.

Keywords

OxyfluorfenCalifornia burclover, Medicago polymorpha L. MEDPOhairy nightshade, Solanum physalifolium Rusby SOLSAhorseweed, Conyza canadensis L. ERICAlittle mallow, Malva parviflora L. MALPAshepherd's-purse, Capsella bursa-pastoris L. CAPBPyellow sweetclover, Melilotus officinalis L. MEUOFstrawberry, Fragaria×ananassaCrop injuryhard seed coatsherbicideplastic mulch
Type
Weed Management—Other Crops/Areas
Information
Weed Technology , Volume 22 , Issue 4 , December 2008 , pp. 685 - 690
Copyright
Copyright © Weed Science Society of America 

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