Nicholas S. Dufault

0000-0002-6173-2593

Disease Control for Snap Beans in Florida

Shouan Zhang, Nicholas Dufault, Mathews Paret, Pamela Roberts, Guodong Liu, and Qingren Wang

This publication suggests a sequential disease control program for snap beans in Florida. Postharvest disease problems are addressed only to the extent that they are affected by field practices. The application of the following sequential control program should minimize yield losses for the majority of plantings.

Integrated Disease Management for Vegetable Crops in Florida

Mathews Paret, Nick Dufault, Tim Momol, Jim Marois, and Steve Olson

Integrated Pest Management (IPM) as applied to vegetable diseases means using all the tactics available to the grower (cultural, biological, host-plant resistance, field scouting, chemical) that provide acceptable yield and quality at the least cost and are compatible with the tenets of environmental stewardship. This 6-page fact sheet was written by Mathews Paret, Nick Dufault, Tim Momol, Jim Marois, and Steve Olson, and published by the UF Department of Plant Pathology, August 2012.

"Candidatus Liberibacter solanacearum": An Emerging Pathogen Infecting Potato and Tomato

Binoy Babu, Mathews L. Paret, Nicholas Dufault, and Carrie L. Harmon

Management of Gummy Stem Blight (Black Rot) on Cucurbits in Florida

Mathews L. Paret, Nicholas S. Dufault, Mason Newark, and Joshua H. Freeman

Gummy stem blight (GSB) is a major disease of many cucurbits, including watermelon, cantaloupe, cucumber, pumpkin, squash, muskmelon, and other melons. The disease is also known as black rot due to its characteristic appearance on infected fruits. Learn the symptoms, causal agent and disease spread, and fungicides labeled for use in Florida.

Diseases of Bitter Melon in South Florida

Shouan Zhang, Nicholas Dufault, Qingren Wang, Guodong Liu, and Gene McAvoy

Management of Cucurbit Downy Mildew in Florida

Mason J. Newark, Mathews L. Paret, Nicholas S. Dufault, Pamela D. Roberts, Shouan Zhang, Gary E. Vallad, Josh Freeman, and Gene McAvoy

A UF/IFAS numbered Management. in support of UF/IFAS Extension program: Integrated Pest Management

Chapter 4. Integrated Pest Management

Peter J. Dittmar, Nicholas S. Dufault, Johan Desaeger, Jawwad Qureshi, Nathan S. Boyd, and Mathews L. Paret

Chapter 4 of the Vegetable Production Handbook of Florida

Fusarium Wilt (Fusarium oxysporum f. sp. niveum) of Watermelon

Pamela Roberts, Nicholas Dufault, Robert Hochmuth, Gary Vallad, and Mathews Paret

A UF/IFAS numbered Fact Sheet for Commercial audience(s). in support of UF/IFAS Extension program: Integrated Pest Management

Chapter 9. Leafy Vegetable Production

Germán Sandoya-Miranda, Ramdas Kanissery, Nicholas S. Dufault, Johan Desaeger, Anna Meszaros, Julien Beuzelin, and Katia Viana Xavier

Chapter 9 of the Vegetable Production Handbook of Florida

Vegetable Production Handbook of Florida, 2024–2025 edition

Shinsuke Agehara, Nicholas S. Dufault, Ramdas Kanissery, and Xavier Martini, editors

See here for the full downloadable PDF of the 2024–2025 Vegetable Production Handbook of Florida, as well as front-matter information and links to each chapter.

Florida Crop/Pest Management Profile: Watermelon

Wael M. Elwakil, Nicholas, S. Dufault, Joshua H. Freeman, and Mark A. Mossler

A UF/IFAS numbered Fact Sheet for Commercial audience(s). in support of UF/IFAS Extension program: Animal Systems

Cotton Cultural Practices and Fertility Management

David Wright, I. Small, and Nick Dufault

A UF/IFAS numbered Fact Sheet for Commercial audience(s).

Chapter 1. Commercial Vegetable Production in Florida

Shinsuke Agehara, Nicholas S. Dufault, Ramdas Kanissery, and Xavier Martini

Chapter 1 of the Vegetable Production Handbook of Florida

Chapter 6. Cole Crop Production

Bonnie Wells, Lincoln Zotarelli, Peter J. Dittmar, Nicholas S. Dufault, Johan Desaeger, Prissy Fletcher, and Qingren Wang

Chapter 6 of the Vegetable Production Handbook of Florida

Chapter 7. Cucurbit Production

Craig Frey, Nathan S. Boyd, Qingren Wang, Johan Desaeger, Jawwad Qureshi, Anna Meszaros, Nicholas S. Dufault, Pamela D. Roberts, and Xavier Martini

Chapter 7 of the Vegetable Production Handbook of Florida

Introducing a Fusarium Wilt Risk Calculator Tool for Watermelon Growers in Florida

Matthew Cullen, Daniel Perondi, Clyde Fraisse, and Nicholas Dufault

Fusarium wilt of watermelon, caused by the fungus Fusarium oxysporum f. sp. niveum, is a threat to watermelon production in Florida. While a number of management options are available, numerous factors influence which management strategies are feasible for growers. This new 4-page publication of the UF/IFAS Plant Pathology Department introduces a tool that calculates the estimated risk of Fusarium wilt based on potential management strategies and environmental factors. This tool is intended for use by watermelon growers in Florida and should be helpful in advising them on management decisions. Written by Matthew Cullen, Daniel Perondi, Clyde Fraisse, and Nicholas Dufault.

Anthracnose on Cucurbits in Florida

Pamela D. Roberts, Gary Vallad, Shouan Zhang, Nicholas Dufault, and Mathews Paret

Watermelon (Citrullus lanatus), cantaloupe or muskmelon (Cucumis melo), squash (Cucurbita pepo), bitter gourd (Momordica charantia), and cucumber (Cucumis sativa) are commonly grown throughout Florida on both commercial farms and home gardens, while pumpkin (Cucurbita maxima) production is largely limited to north Florida.  Anthracnose on cucurbits, caused by the fungus Colletotrichum orbiculare, is a common disease that occurs worldwide and throughout Florida. While all cucurbits are susceptible to the disease, cucumber, cantaloupe, and watermelon are most frequently affected. This EDIS document provides information regarding the pathogen, disease cycle, diagnostics and symptoms, and an overview of management of this disease on cucucurbits.

Chapter 10. Minor Vegetable Crop Production

Dakshina R. Seal, Qingren Wang, Ramdas Kanissery, Anna Meszaros, Crystal A. Snodgrass, Julien Beuzelin, Johan Desaeger, Nicholas S. Dufault, Katia Viana Xavier, and Shouan Zhang

Chapter 10 of the Vegetable Production Handbook of Florida

Chapter 17. Sweet Corn Production

Katia Viana Xavier, Ramdas Kanissery, Craig Frey, Anna Meszaros, Nicholas S. Dufault, Johan Desaeger, Jawwad Qureshi, and Julien Beuzelin

Chapter 17 of the Vegetable Production Handbook of Florida

Field Guide to Hemp (Cannabis sativa) Diseases

Kevin Korus, Wael Elwakil, Nicholas Dufault, and Zachary Eldred

Industrial hemp is Cannabis sativa that contains < 0.3% THC and can be legally grown with permits in Florida. The plant may be grown for flower, grain, or fiber production. Other than the lower THC levels, hemp is the same plant botanically as marijuana. Because this plant has long been on the Schedule 1 controlled substance list in the U.S. (United States), knowledge of pests and diseases is limited, and labelled control measures are almost non-existent. This publication provides information and general management recommendations for hemp diseases found in Florida. Management options are currently limited as there is a lack of resistant varieties and other management strategies for industrial hemp production.

Powdery Mildew on Watermelon in Florida

Pamela D. Roberts, Mathews Paret, and Nicholas Dufault

This document discusses the symptoms and management of powdery mildew, a problematic fungal disease, on watermelon in Florida.

Common Tomato High-Tunnel Production Diseases in Florida

Zachary D. Eldred, Shufang Tian, Gary E. Vallad, Xin Zhao, Mathews Paret, and Nicholas S. Dufault

This new 7-page article provides a concise overview of some influential high-tunnel tomato soilborne and foliar diseases and their cultural management techniques. Written by Zachary D. Eldred, Shufang Tian, Gary E. Vallad, Xin Zhao, Mathews Paret, and Nicholas S. Dufault and published by the UF/IFAS Plant Pathology Department.