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ARS Home » Pacific West Area » Hilo, Hawaii » Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center » Tropical Crop and Commodity Protection Research » Research » Publications at this Location » Publication #384655
Research Project: Development of New and Improved Surveillance, Detection, Control, and Management Technologies for Fruit Flies and Invasive Pests of Tropical and Subtropical Crops

Location: Tropical Crop and Commodity Protection Research

Title: The efficacy of two Sivanto products on grape mealybug infestations, 2020

Author
item HESSLER, STEPHEN - Cornell University
item Stockton, Dara
item LOEB, GREGORY - Cornell University

Submitted to: Arthropod Management Tests
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/28/2021
Publication Date: 6/17/2021
Citation: Hessler, S., Stockton, D.G., Loeb, G.M. 2021. The efficacy of two Sivanto products on grape mealybug infestations, 2020. Arthropod Management Tests. 46(1). Article tsab115. https://doi.org/10.1093/amt/tsab115.
DOI: https://doi.org/10.1093/amt/tsab115

Interpretive Summary: Grape mealybug is a serious pest of grapes in the United States that transmits grapevine leafroll virus. In this trial we tested the efficacy of two Sivanto products on grape mealybug infestation on 'Chardonnay' grapes in Central New York during the summer of 2020. We found that one product, Sivanto HL may be effective against grape mealybug as fewer adult females and eggmasses were observed 65 days after treatment. Sivanto Prime was not effective and we observed similar mealybug abundances in plots treated with this product. Further research is needed to compare the efficacy of Sivanto HL with other insecticide products.

Technical Abstract: The objective of this trial was to test the efficacy of two Sivanto (flupyradifurone) insecticide products on grape mealybug (Pseudococcus maritimus) infestations. The trial was conducted during 2020 at a commercial ‘Chardonnay’ vineyard (Vitis vinifera sp. Vinifera) in Central New York (42°41'5.45"N, 76°44'38.14"W) with a known history of moderate levels of grape mealybug infestation. Treatment replicates were randomly assigned to single row by 12 panel blocks, 3 panels per replicate with a single panel buffer between replicates. A total of 5 replicates were conducted. Treatments were applied on July 7th, 2020 using an air assisted backpack sprayer at the protocol rates of 14oz/acre for Sivanto Prime, and 7oz/acre for Sivanto HL + 0.125% v/v Induce. Differences in adult and egg mass counts were analyzed using generalized linear mixed models with poisson distribution. We found that vines treated with Sivanto HL had significantly fewer adult female grape mealybug (z = -2.31, P = 0.02) and fewer egg masses (z = -2.53, P = 0.01) than untreated check vines. There was no difference infestation between untreated vines and those treated with Sivanto Prime. There were no observed foliar or crop responses to the products as applied.