<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In 2012, theWashington raspberry (<italic>Rubus idaeus</italic>) industry received a special local needs (SLN) 24(c) label to apply Vydate L<sup>®</sup> (active ingredient oxamyl) to nonbearing raspberry for the management of <italic>Pratylenchus penetrans</italic>. This is a new use pattern of this nematicide for raspberry growers; therefore, research was conducted to identify the optimum spring application timing of oxamyl for the suppression of <italic>P. penetrans</italic>. Three on-farm trials in each of 2012 and 2013 were established in Washington in newly planted raspberry trials on a range of varieties. Oxamyl was applied twice in April (2013 only), May, and June, and these treatments were compared to each other as well as a nontreated control. Population densities of <italic>P. penetrans</italic> were determined in the fall and spring postoxamyl applications for at least 1.5 years. Plant vigor was also evaluated in the trials. Combined results from 2012 and 2013 trials indicated that application timing in the spring was not critical. Oxamyl application reduced root <italic>P. penetrans</italic> population densities in all six trials. Reductions in <italic>P. penetrans</italic> population densities in roots of oxamyl-treated plants, regardless of application timing, ranged from 62%to 99%of densities in nontreated controls. Phytotoxicity to newly planted raspberry was never observed in any of the trials. A nonbearing application of oxamyl is an important addition to current control methods used to manage <italic>P. penetrans</italic> in raspberry in Washington.</p></abstract>

In 2012, theWashington raspberry (Rubus idaeus) industry received a special local needs (SLN) 24(c) label to apply Vydate L® (active ingredient oxamyl) to nonbearing raspberry for the management of Pratylenchus penetrans. This is a new use pattern of this nematicide for raspberry growers; therefore, research was conducted to identify the optimum spring application timing of oxamyl for the suppression of P. penetrans. Three on-farm trials in each of 2012 and 2013 were established in Washington in newly planted raspberry trials on a range of varieties. Oxamyl was applied twice in April (2013 only), May, and June, and these treatments were compared to each other as well as a nontreated control. Population densities of P. penetrans were determined in the fall and spring postoxamyl applications for at least 1.5 years. Plant vigor was also evaluated in the trials. Combined results from 2012 and 2013 trials indicated that application timing in the spring was not critical. Oxamyl application reduced root P. penetrans population densities in all six trials. Reductions in P. penetrans population densities in roots of oxamyl-treated plants, regardless of application timing, ranged from 62%to 99%of densities in nontreated controls. Phytotoxicity to newly planted raspberry was never observed in any of the trials. A nonbearing application of oxamyl is an important addition to current control methods used to manage P. penetrans in raspberry in Washington.

Effect of Application Timing of Oxamyl in Nonbearing Raspberry for <italic>Pratylenchus penetrans</italic> Management

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effect of Application Timing of Oxamyl in Nonbearing Raspberry for  Management

In 2012, theWashington raspberry (Rubus idaeus) industry received a special local needs (SLN) 24(c) label to apply Vydate L® (active ingredient oxamyl) to...

Effect of Application Timing of Oxamyl in Nonbearing Raspberry for Pratylenchus penetrans Management

Published Online: Jul 21, 2017

Page range: 177 - 182

Received: Mar 05, 2016

DOI: https://doi.org/10.21307/jofnem-2017-025

Keywords
postplant nematicide, root lesion nematode, vydate

© 2016 Inga A. Zasada et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effect of Application Timing of Oxamyl in Nonbearing Raspberry for Pratylenchus penetrans Management

Published Online: Jul 21, 2017

Page range: 177 - 182

Received: Mar 05, 2016

DOI: https://doi.org/10.21307/jofnem-2017-025

Keywordspostplant nematicide, root lesion nematode, vydate

© 2016 Inga A. Zasada et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
postplant nematicide, root lesion nematode, vydate