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| IS# | Priority | Commodity (Crop Group) | Pest | Project Status | Discipline | Use Site |
| IS00376 | X | GRAPE (13-07F = SMALL FRUIT VINE CLIMBING SUBGROUP, EXCEPT FUZZY KIWIFRUIT) | Leafhopper, Grape (Erythroneura elegantula) | Research Completed | Entomology | Field Only |
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| Problem Code: |
PPWS
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| Requesting State(s): |
McGourty,Glenn (CA) ; Britt,Kadie (CA) ; Wilson,Houston (CA)
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| Potential Products: |
C810
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| PCR Reason for Need: |
Supporting information to be sent to Daniel Kunkel at Daniel.kunkel@rutgers.edu
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| PCR Details: |
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| Study Goals: |
The objective of this study is to evaluate the efficacy and crop safety of a few bio-based products that are registered for use on grape for the control of leafhoppers against the Western grape leafhopper, the variegated leafhopper, and the Virginia creeper leafhopper with the goal of educating growers on how to best manage these pests. Conventional products tested included Admire Pro (imidacloprid). Bio-based products included Pro-365 (chitosan), Pyganic / Pyganic EC 5.0 II (pyrethrins), Aza-Direct (azadirachtin), Grandevo (Chromobacterium subtsugae), BoteGHA ES (Beauveria bassiana), PureCrop1 (corn & soybean oil), Venerate / Venerate XC (Burkholderia spp. strain A396), M-Pede (potassium salts of fatty acids), Prev-AM (sodium tetraborohydrate decahydrate), XPS-203 (fatty acids), Pure Spray Green (mineral oil) [HQ: 8/25 AA].
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| Comments |
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| Study Accomplishments: |
The research outcomes were published in a peer reviewed paper as cited below:
Kadie E Britt, Sarah Meierotto, Houston Wilson, Evaluation of insecticides to control leafhoppers in grape, 2021, Arthropod Management Tests, Volume 50, Issue 1, 2025 [HQ: 8/25 AA].
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Trial Detail
( Records counts: 2 )
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| Trial Number | Trial Year | Trial State | Institution | Coordinator | Researcher | Protocol | Report | Data To MFG | Performance Results and Comments |
| IS00376-21-CA01 | 2021 | CA | University of California Riverside | Alice Axtell | Houston Wilson |
IS00376-21
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Yes
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Surround WP (kaolin clay) at 50 and 25 lbs/100gal was the only treatment to significantly reduce Virginia creeper leafhoppers infesting grape following 3 foliar applications at 7-10 day RTI. Other treatments included: Admire Pro (imidacloprid) at 1.4 fl oz/A, Pro-365 (chitosan) at 30 ml/gallon, Pyganic EC 5.0 II (pyrethrins) at 15 fl oz/A, Aza-Direct (azadirachtin) at 2 pts/A, Grandevo (chromobacterium subtsugae) at 3 lbs/A, BoteGHA ES (Beauveria bassiana) at 1 quart/A, PureCrop1 (corn & soybean oil) at 1.5% v/v, Venerate XC (Burkholderia spp. strain A396) at 4 qts/A, M-Pede (potassium salts of fatty acids) at 2.5 gal/100 gal, Prev-AM (sodium tetraborohydrate decahydrate) at 50 fl oz/100 gal, and XPS-203 (fatty acids) at 9.36 fl oz/1 gal. All treatment except Grandevo significantly reduced populations of Western grape leafhopper, while Surround WP and Prev-Am were the only treatments that significantly reduced populations of variegated leafhopper.
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| IS00376-23-CA26 | 2023 | CA | University of California Riverside | Alice Axtell | Houston Wilson |
IS00376-23
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Yes
| 10/2024 |
The following registered products were tested against an infestation of Virginia creeper leafhoppers (VCLH) and Western grape leafhoppers (WGLH) on grape: Pyganic (pyrethrins; commercial standard) at 15 fl oz/A, Aza-Direct + M-Pede (azadirachtin + insecticidal soap) at 16 fl oz/A and 2.5% v/v respectively, BoteGHA ES (Beauveria bassiana) at 32 fl oz/A, Surround WP (kaolin clay) at 0.5 lbs/gal, PureCrop1 (corn and soybean oil) at 1.5% v/v, Pure Spray Green (mineral oil) at 2% v/v, Grandevo (Chromobacterium subtsugae) at 48 fl oz/A, Venerate (Burkholderia spp. strain A396) at 28 fl oz/A). All treatments were applied twice every 7 days. Results on VCLH: while the commercial standard provided 90% of pest reduction, only Grandevo and Venerate XC delivered some suppression (42% and 20% respectively). Results on WGLH: while the commercial standard provided 95% control, only Aza-Direct+M-pede, Purecrop1, and Grandevo provided some suppression at 50%, 33% and 47% respectively.
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