Fungicide efficacy trials have been conducted using both conventional and novel treatment programs to manage fungal diseases in grapevine, apple, pear, and other small fruit crops. Viewers can access detailed information on trial design, treatment lists, weather conditions, final results, and related data. Note: Products that consistently perform well in our trials will eventually be included in the UC IPM Fungicide Efficacy and Timing tables for statewide guidance. View the UC IPM tables (PDF)
- 2025 Grape Powdery Mildew Fungicide Efficacy Trial Report on Wine Grapes
- 2025 Grape Bunch Rot Fungicide Efficacy Trial on Wine Grapes
2024 Trials
- 2024 Evaluation of Pruning Wound Protection Field Trial for Grape Trunk Diseases
- 2024 Grape Bunch Rot Fungicide Efficacy Trial on Wine Grapes
- 2024 Grape Powdery Mildew Fungicide Efficacy Trial Report on Wine Grapes
- 2024 Evaluation of fungicide programs for the management of powdery mildew on table grapes in California, 2024
2023 Trials
- 2023 Grape Bunch Rot Fungicide Efficacy Trial Report
- 2023 Grape Powdery Mildew Fungicide Efficacy Trial Report
2022 Trials
- 2022 Evaluation of Pruning Wound Protection field trial for Grape Trunk Diseases
- 2022 Grape Bunch Rot Fungicide Efficacy Trial Report
- 2022 Grape Powdery Mildew Fungicide Efficacy Trial Report
- 2022 Pear Scab Fungicide Efficacy Trial Report
2021 Trials
- Evaluation of fungicide programs for management of bunch rot and sour rot of table grapes in Kern Co
- 2021 Evaluation of Pruning Wound Protection field trial for Grape Trunk Diseases (Kern County)
- 2021 Grape Powdery Mildew Fungicide Efficacy Trial Report
- 2021 Grape Bunch Rot Fungicide Efficacy Trial Report
- 2021 Pear Scab Fungicide Efficacy Trial Report
2020 Trials
- 2020 Grape Powdery Mildew Fungicide Efficacy Trial Report (Sacramento County)
- 2020 Grape Bunch Rot Fungicide Efficacy Trial Report (Yolo County)
- 2020 Pear Scab Fungicide Efficacy Trial Report (Lake County)
- 2020 Evaluation of Pruning Wound Protectants for Grape Trunk Diseases (Sacramento County)
- 2020 Evaluation of Pruning Wound Protectants for Grape Trunk Diseases (Kern County)
- 2020 Evaluation of Pruning Wound Protectants for Grape Trunk Diseases (Yolo County)
- In vitro Test to Evaluate the Efficacy of Flutriafol (Rhyme) for Selected Fungal Pathogens Using Spiral Plate Gradient Dilutions
2019 Trials
- 2019 Grape Powdery Mildew Final Report
- 2019 Grape Botrytis Bunch Rot Report
- 2019 Evaluation of Biological and Chemical Pruning Wound Protectants Against Selected Fungi Associated with Grape Trunk Diseases
- 2019 Grape Pruning Wound Protection Trial with Biotam
- 2019 Grape Pruning Wound Protection Trial with Vintec
2018 Trials
2017 Trials
2016 Trials
- 2016 Grape Powdery Mildew Report
- 2016 Pear Scab Report
- 2016 Cucurbit Powdery Mildew Report
- 2016 Grape Phomopsis Cane and Leaf Spot Report
- 2016 Grape Botrytis Bunch Rot Report
2015 Trials
- 2015 Cucurbit Powdery Mildew Report
- 2015 Grape Botrytis Bunch Rot Report
- 2015 Grape Phomopsis Cane and Leaf Spot Report
- 2015 Grape Powdery Mildew Report
- 2015 Pear Scab Report
2014 Trials
- 2014 Apple Scab Report
- 2014 Grape Powdery Mildew Report
2014 Pear Scab Report - 2014 Grape Botrytis Bunch Rot Report
- 2014 Cucurbit Powdery Mildew Report
- 2014 Grape Phomopsis Cane and Leaf Spot Report
2013 Trials
- 2013 Apple Scab Report
- 2013 Grape Powdery Mildew Report
- 2013 Pear Scab Report
- 2013 Grape Botrytis Bunch Rot Report
- 2013 Cucurbit Powdery Mildew Report
2012 Trials
- 2012 Apple Scab Report
- 2012 Cucurbit Powdery Mildew Report
- 2012 Grape Botrytis Report
- 2012 Grape Phomopsis Report
- 2012 Grape Powdery Mildew Report
2011 Trials
- Powdery Mildew Control on Pumpkin with Organic and Synthetic Fungicides: 2011 field trial
- Control of grape powdery mildew with synthetic, biological and organic fungicides, 2011 field trials
- Evaluation of fungicide programs for management of Botrytis bunch rot of grapes: 2011 field trial
- Fungicide control of apple scab: 2011 field trial
2010 Trials
- Control of grape powdery mildew with synthetic, biological and organic fungicides: 2010 field trials
- Powdery mildew control on pumpkin and zucchini with organic and synthetic fungicides: 2010 field trial
- Evaluation of fungicide programs for management of Botrytis bunch rot of grapes: 2010 field trial
- Fungicide control of apple scab: 2010 field trial
2009 Trials
Almond
Apple
Cucurbits
Grape
2008 Trials
Apple
Cucurbits
Grape
Strawberry
2007 Trials
Apple
Cucurbits
Grape
Strawberry
- POWDERY MILDEW, Solano County
- GREY MOLD & ANTHRACNOSE, Trial 1, Solano County
- GREY MOLD & ANTHRACNOSE, Trial 2, Solano County
2006 Trials
Cucurbit
Grape
- POWDERY MILDEW, Summary Results, Sacramento County
POWDERY MILDEW, TRIAL 1, Sacramento County
POWDERY MILDEW, TRIAL 2, Sacramento County
POWDERY MILDEW, TRIAL 3, Sacramento County
POWDERY MILDEW, TRIAL 4, Sacramento County
BUNCH ROT, Napa County
Strawberry
- POWDERY MILDEW
GREY MOLD & ANTHRACNOSE
2005 Trials
Apple
Cucurbit
- POWDERY MILDEW
Grape
Strawberry
- POWDERY MILDEW
GREY MOLD & ANTHRACNOSE
2004 Trials
APPLE
Cucurbit
Grape
- POWDERY MILDEW, TRIAL 1
- POWDERY MILDEW, TRIAL 2
- POWDERY MILDEW, TRIAL 3
- BUNCH ROT
Strawberry
- POWDERY MILDEW
- GREY MOLD & ANTHRACNOSE
2003 Trials
Apple
Cucurbit
Grape
Strawberry
Appendix