applyparastyle "fig//caption/p" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 46(1), 2021, 1–2 doi: 10.1093/amt/tsab096 Section E: Vegetable Crops POTATO: Solanum tuberosum cv. ‘Silverton Russet’ HeadA=HeadB=HeadA=HeadB/HeadA HeadB=HeadC=HeadB=HeadC/HeadB Evaluation of Two Oil Products for PVY Management in HeadC=HeadD=HeadC=HeadD/HeadC Extract3=HeadA=Extract1=HeadA Seed Potato Production in Wisconsin, 2020 History=Text=History=Text_First 1,3, 2 1 2 2 Benjamin Bradford, Cole Lubinski, Scott Chapman, Alex Crockford, Clover Spacek, EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA 2 1, Jolene Spurgeon, and Russell Groves EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB 1 2 Department of Entomology, University of Wisconsin-Madison, Madison, WI, Department of Plant Pathology, University of EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Wisconsin-Madison, Madison, WI, and Corresponding author, e-mail: firstname.lastname@example.org EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Section Editor: John Palumbo ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Potato | Solanum tuberosum ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC This trial was conducted at the Langlade County Airport, observed. Plots were maintained according to standard commer- ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA northeast of Antigo, Wisconsin (45.156639, −89.113850) on a cial practices. Oil applications are known to cause yield drag in po- silt loam soil in 2020. Potato, Solanum tuberosum cv. ‘Silverton tatoes, so yield comparisons relative to control plots are relevant Russet’ B-size tubers were machine planted May 20. Four when evaluating treatment programs. The center two rows from replicates of five plots were arranged in a randomized complete each plot were harvested on Sep 29 to determine yield and tuber block design. Plots measured four rows (12 ft.) wide by 20 ft. quality. Tubers were graded into A’s and B’s by size and weights were long. This trial included one untreated check and four oil applica- obtained for A’s, B’s, and culls. Damaged or unmarketable tubers tion programs employing a combination of an at-plant in-furrow were classified as culls. No significant differences in yields or culls and foliar applications. Oil programs included three rates of was observed for any of the treatments (Table 1). PureSpray Green (PSG, 0.5, 0.75, 1.0 gal/ac), and one rate of JMS During harvest, undersize and B-size tubers were collected and Stylet Oil (0.75% v/v at 20 gal/ac). Treatments were applied using sent to Florida for grow-out and PVY ratings. Tubers were planted a CO -pressurized backpack sprayer equipped with a 6 ft. boom, on 21 Nov 2020 in Homestead, FL. Emergence and stand establish- operating at 30 psi and delivering 20 gal/ac through 4 flat-fan ment varied somewhat between replicates and treatments, due in part nozzles (Tee Jet XR 8002-VS) spaced 18 in. apart while traveling to different numbers of tubers sent from the Antigo harvest, and due at 3.5 ft./s. Oil applications were performed on a roughly 7-d to blackleg affecting some parts of the field (Table 2). PVY symptom interval in July, followed by a 5-d interval in August, totaling 11 ratings were performed on 11 and 20 Jan 2021, by Wisconsin applications. All plots received a standard program of fertilizer, Seed Potato Certification Program staff. No statistically significant herbicide, and fungicide inputs. Treatment main effects were de- differences in PVY infection rates were observed between treatments termined using analysis of variance. Means separation letter codes on the first or second evaluation dates, although numeric differences were generated using Tukey’s HSD procedure (α = .05). PVY in- in infection rates were observed (Table 2). The highest PVY rates were fection rate percentages were arcsine square-root transformed to observed in the check treatment at 3.6%, with a rate response seen satisfy assumptions of normality. in the PureSpray Green treatments (1.4, 0.8, and 0.5% for the low, All plots achieved high levels of emergence and no signs of medium, and high rates, respectively). JMS Oil appeared to underper- treatment-related phytotoxicity or reduced plant vigor were form PureSpray Green with a PVY infection rate of 2.5%. This research was supported in part by direct industry funding. © The Author(s) 2021. Published by Oxford University Press on behalf of Entomological Society of America. 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/ licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact email@example.com 2 Arthropod Management T ests, 2021, Vol. 46, No. 1 Table 1. Yield Table 2. PVY infection rates a b a b Trt Product Rate Yield (cwt/ac) Trt No. Product Rate (amt/ac) Stand Prp PVY+ No. (amt/ac) Total Mkt A’s B’s Culls Count 1st eval. 2nd eval. 1 Check (no oil) 344.70a 300.90a 43.83a 17.33a 1 Check (no oil) 54.25a 1.5%a 3.6%a 2 PureSpray 0.5 gal/ac 320.90a 293.90a 26.95a 12.07a 2 PureSpray Green 0.5 gal/ac 47.50ab 0.0%a 1.4%a Green 3 PureSpray Green 0.75 gal/ac 50.00a 0.4%a 0.8%a 3 PureSpray 0.75 gal/ac 294.60a 260.30a 34.30a 10.80a 4 PureSpray Green 1.0 gal/ac 38.00ab 0.0%a 0.5%a Green 5 JMS Oil 0.75% v/v 30.00b 0.8%a 2.5%a 4 PureSpray 1.0 gal/ac 351.30a 302.40a 48.82a 12.25a P>F 0.0063 0.36 0.17 Green 5 JMS Oil 0.75% v/v 319.20a 260.30a 58.89a 9.07a All treatments received a standard program of herbicide, fungicide, and in- P>F 0.52 0.12 0.36 0.19 secticide inputs. Oil applications were performed on a 7-d interval in July, followed by a 5-d interval in August. a b All treatments received a standard program of herbicide, fungicide, and in- PVY infection was confirmed by visual inspection. Evaluations were per - secticide inputs. Oil applications were performed on a 7-d interval in July, formed on Jan 11 and Jan 20. followed by a 5-d interval in August. Means followed by same letter codes are not significantly different (Tukey’s Tubers were machine graded by size (A’s > 1.875” dia.) and culls removed by HSD, α = .05). visual inspection. Means followed by same letter codes are not significantly different (Tukey’s HSD, α = .05).
Arthropod Management Tests – Oxford University Press
Published: May 11, 2021
Keywords: Potato | Solanum tuberosum; mineral oil; paraffinic oil