Peter J. Dittmar

0000-0003-2640-7768

Seed Piece Spacing Adjustment for Florida Chipping Potato

Fernanda Souza Krupek, Steven A. Sargent, Peter J. Dittmar, and Lincoln Zotarelli

Calendar for Southern Highbush Blueberry Management in Florida

Douglas A. Phillips, Jeffrey G. Williamson, Philip F. Harmon, Oscar E. Liburd, and Peter J. Dittmar

Manejo de malezas en las papas

Peter Dittmar, Seth Byrd, Lincoln Zotarelli, Diane Rowland, and William Stall

A UF/IFAS numbered Translation.

Chapter 12. Onion, Leek, and Chive Production

Johan Desaeger, Peter J. Dittmar, Pamela D. Roberts, Xavier Martini, and Lincoln Zotarelli

Chapter 12 of the Vegetable Production Handbook of Florida

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

Summer Squash Production in Miami-Dade County, Florida

D. Seal, S. Zhang, P. Dittmar, Y. C. Li, W. Klassen, Q. Wang, and T. Olczyk

Summer squash is an important vegetable crop in Miami-Dade County. It is grown annually on about 6,000 acres and sold nationwide during the winter in the fresh market. This 16-page fact sheet describes the varieties of summer squash, land preparation and transplanting, what fertilizer to use, irrigation and freeze protection, disease management, insect management, weed management, harvest, and crop rotation.

2024 Florida Blueberry Integrated Pest Management Guide

Philip F. Harmon, Oscar E. Liburd, Peter Dittmar, Jeffrey G. Williamson, and Doug Phillips

This publication is intended to be a resource for Florida blueberry growers to use in scouting for disease and insect/mite pest damage; managing disease, insect/mite pests, and weeds; and application of certain plant growth regulators.

Chapter 14. Potato Production

Lincoln Zotarelli, Peter J. Dittmar, Pamela D. Roberts, Johan Desaeger, Prissy Fletcher, and Bonnie Wells

Chapter 14 of the Vegetable Production Handbook of Florida

Chapter 6. Cole Crop Production

Lincoln Zotarelli, Peter J. Dittmar, Nicholas S. Dufault, Johan Desaeger, Prissy Fletcher, Qingren Wang, and De-Fen Mou

Chapter 6 of the Vegetable Production Handbook of Florida

Chapter 15. Root Crop Production

Julien M. Beuzelin, Peter J. Dittmar, Johan Desaeger, Lincoln Zotarelli, Shouan Zhang, Qingren Wang, Craig Frey, and Anna Meszaros

Chapter 15 of the Vegetable Production Handbook of Florida

Weeds as Reservoirs of Plant Pathogens Affecting Economically Important Crops

Morgan Byron, Danielle Treadwell, and Peter Dittmar

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

Chapter 11. Legume Production

Craig Frey, Peter J. Dittmar, Dakshina R. Seal, Jawwad Qureshi, Shouan Zhang, Johan Desaeger, and Qingren Wang

Chapter 11 of the Vegetable Production Handbook of Florida

Potato Vine Killing or Desiccation

Lincoln Zotarelli, Steven Sargent, Peter Dittmar, and Mildred Makani

A UF/IFAS numbered Fact Sheet. Published by Plant Systems

Diagnosing Herbicide Injury in Corn

Pratap Devkota, Sarah Berger, Jason Ferrell, and Peter Dittmar

A UF/IFAS numbered Fact Sheet.

Organic Blueberry Production in Florida

Douglas A. Phillips, Peter J. Dittmar, Philip F. Harmon, Oscar E. Liburd, Danielle D. Treadwell, and Jeffrey G. Williamson

A UF/IFAS numbered peer reviewed Fact Sheet for Commercial audience(s). Published by Plant Systems

Vegetable Production Handbook of Florida, 2025–2026 edition

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

See here for the full downloadable PDF of the 2025–2026 Vegetable Production Handbook of Florida, as well as front-matter information and links to each chapter.

Chapter 1. Commercial Vegetable Production in Florida

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

Chapter 1 of the Vegetable Production Handbook of Florida