Herbicides

Chris Marble

Brett W. Bultemeier
Other Contacts: Tyler Newberry andAmy Solis

Paraquat is unique among pesticides in that it requires all who use it to be licensed. After a pesticide license is attained additional training is required on a 3 year basis. Furthermore, there are specific packaging and equipment requirements to legally use this product. This document serves to outline these requirements and explain how to fulfill them for pesticide applicators in Florida and around the country. 

Ramdas Kanissery andBrent Sellers

2026–2027 Florida Citrus Production Guide (Current Season Spray Guide).

Pratap Devkota, Ednaldo A. Borgato, Ethan Carter, Hardeep Singh, andPratap Devkota

Using 2,4-D Choline Herbicide Products on 2,4-D-Tolerant Crops

Pawel Petelewicz

This publication is the first in a three-part series designed as a resource for turfgrass professionals, Extension specialists, and clientele, offering a practical overview of foundational concepts and identifying key factors that contribute to incidents of herbicide underperformance across warm-season turfgrass systems. While examples and management considerations are drawn primarily from Florida turfgrasses, the principles discussed are broadly applicable to other warm-season turf regions. This installment focuses specifically on how plant biology and related factors influence herbicide efficacy and safety. Written by Pawel Petelewicz, and published by the UF/IFAS Department of Agronomy, July 2026.

Pawel Petelewicz, J. Bryan Unruh, andRamon Leon

This document is a tool for turfgrass professionals, sod producers, golf course superintendents, athletic and sports fields managers, landscape managers, and extension specialists to help develop herbicide programs that reduce the risk of herbicide resistant weeds in turfgrass systems.

Brett W. Bultemeier, Jason Ferrell, andGreg E. MacDonald
Other Contacts: Tyler Newberry andAmy Solis

Organo-auxin (phenoxy) herbicides have found a place in weed control schemes for peanut, corn, small grains, sugarcane, turf, pasture and forage crops, and many other areas. It is the intent of this publication to clarify and disseminate the Florida Organo-Auxin Herbicide Rule to interested growers and applicators. Major revision by B. Bultemeier, J. A. Ferrell, and G. E. MacDonald; 4 pages.