Managing Plant–Parasitic Nematodes in Established Red Raspberry Fields

Walters, Tom; Pinkerton, J. N.; Riga, E.; Zasada, Inga A.; Particka, Michael; Yoshida, Harvey A.; Ishida, Chris

doi:10.21273/hortsci.19.4.762

Cited by 9 publications

(12 citation statements)

References 15 publications

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“…Our previous research efforts demonstrated that spring applications of oxamyl and fosthiazate reduced RLN population densities for up to 2 years (Walters et al, 2009). In the same studies, oxamyl application rate determined the duration of nematode suppression.…”

Section: Discussionmentioning

confidence: 89%

“…The formulation applied in these experiments (Cordon; Dow Agrosciences, Indianapolis) is 93.6% 1,3-D, and is marketed for application by drip irrigation. We tested this 1,3-D formulation in previous studies, but not at the rate of 72 lb/acre (Walters et al, 2009). A fall application of 8.4 lb/acre 1,3-D applied through the drip line did not reduce The soil was a Kickerville silt loam collected from a red raspberry field in Lynden, WA.…”

Section: Discussionmentioning

confidence: 99%

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Post-Plant Nematicides for the Control of Root Lesion Nematode in Red Raspberry

Zasada

Walters

Pinkerton

2010

hortte

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To identify a post-plant nematicide to control root lesion nematode [RLN (Pratylenchus penetrans)] in red raspberry (Rubus idaeus), a number of nematicides was tested in soil-only and plant-based experiments. In soil-only experiments, soil naturally infested with RLN was drenched with the nematicides and nematode survival was assessed 7 and 14 days after treatment. Fosthiazate and oxamyl reduced RLN recovery 92% and 52% across trials and sampling times, respectively, compared with the nontreated control. Other nematicides that resulted in moderate, and sometimes inconsistent, control of RLN were soapbark (Quillaja saponaria) saponins, 1,3-dichloropropene, and methomyl. In plant-based experiments, ‘Meeker’ red raspberry was established in pots with RLN-infested soil mixed with greenhouse soil and the nematicides were applied as soil drenches or as a foliar application. Nematode recovery and cane and root weights were quantified as measurements of nematicide toxicity and phytotoxicity, respectively. Similar to soil-only experiments, fosthiazate and oxamyl were the most effective nematicides tested in reducing RLN population densities in established red raspberry. Fosthiazate and oxamyl significantly reduced RLN per gram dry root population densities by 97% and 87%, respectively, compared with the infested, nontreated control. None of the other nematicides reduced RLN population densities compared with the infested, nontreated controls. There was no phytotoxicity to red raspberry associated with any of the nematicides.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Post-Plant Nematicides for the Control of Root Lesion Nematode in Red Raspberry

Zasada

Walters

Pinkerton

2010

hortte

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“…In controlled experiments, oxamyl reduced population densities of P. penetrans in raspberry roots by 88% compared with the nontreated control (Zasada et al, 2010). In field trials, two banded applications of oxamyl in spring reduced population densities of P. penetrans in roots of raspberry 'Willamette' by 94% compared with the nontreated control (Walters et al, 2009). In the trials presented here, when treatment effects were significant population densities of P. penetrans were reduced .90% in soil and/or roots.…”

Section: Discussionmentioning

confidence: 96%

“…Oxamyl is a carbamate with contact and systemic activity; it has been shown to be an effective nematicide against many species of Pratylenchus in several production systems including potato (Hafez and Sundararaj, 2009), easter lily (Westerdahl et al, 2003), and mint (Rhoades, 1984). In raspberry, we demonstrated that a spring application of oxamyl to bearing raspberry plants reduced P. penetrans population densities for up to 2 years, but fall oxamyl applications were not effective (Walters et al, 2009). When trying to identify postplant nematicides alternatives for the Washington raspberry industry, oxamyl was superior to many of the other tested nematicides in suppressing P. penetrans (Zasada et al, 2010).…”

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confidence: 99%

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

Zasada

Walters²

2016

Journal of Nematology

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In 2012, the Washington raspberry (Rubus idaeus) industry received a special local needs (SLN) 24(c) label to apply Vydate L Ò (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.

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“…The nematicides were applied together with a CO 2 -powered backpack sprayer in a volume of 1 liter/ subplot using a single-nozzle boom (8006 flat-fan nozzle; Teejet, Wheaton, IL) sprayed directly on the soil in a 1.2-m-wide band centered on the row. Rates for these applications were calculated as directed sprays of the full rate concentrated in the band (i.e., the rate applied was the actual amount used per hectare of crop but the product was concentrated in a 1.2-m-wide band) (34). Each application was followed by rainfall or overhead water application with a hose of at least 1 cm.…”

Section: Methodsmentioning

confidence: 99%

Impact of Pratylenchus penetrans on Establishment of Red Raspberry

et al. 2015

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The plant-parasitic nematode, Pratylenchus penetrans, is a major constraint to red raspberry (Rubus idaeus) production. To determine the impact of P. penetrans on the establishment and productivity of eight raspberry cultivars, R. niveus, and R. leucodermis, plants were grown in fumigated and nonfumigated soil. Then, soil and root populations of P. penetrans and plant productivity (vigor, cane height, biomass, and yield) were monitored over 2 years. In a separate experiment, the role that soil type plays in mediating P. penetrans populations and raspberry establishment was investigated. At 6 and 12 months after planting, population densities of P. penetrans were lower in fumigated than in nonfumigated soil; this trend continued 18 months after planting. All cultivars and R. leucodermis were found to be extremely susceptible to damage caused by P. penetrans. By the end of the experiment, yield was the most sensitive indicator of plant productivity among cultivars, with losses in nonfumigated soil ranging from 63 to 100% of those observed in fumigated soil. However, there was no difference in the productivity of R. niveus plants grown in nonfumigated versus fumigated soils. Results also indicated that the damage potential of P. penetrans was greater on sandy loam versus silt loam soils. The total plant biomass of ‘Meeker’ raspberry was 46% lower in a sandy loam soil containing P. penetrans compared with soil without P. penetrans; this trend was not observed consistently in a silt loam soil. Despite the fact that soil fumigation is increasingly more limited by regulations, this study shows the utility of fumigation in reducing P. penetrans populations for a sufficient period of time to ensure that newly planted raspberry seedlings can become successfully established.

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Managing Plant–Parasitic Nematodes in Established Red Raspberry Fields

Cited by 9 publications

References 15 publications

Post-Plant Nematicides for the Control of Root Lesion Nematode in Red Raspberry

Post-Plant Nematicides for the Control of Root Lesion Nematode in Red Raspberry

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

Impact of Pratylenchus penetrans on Establishment of Red Raspberry

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