Greg E. MacDonald

0000-0002-8519-4611

Single-Nozzle Backpack or ATV Sprayer Calibration

B. A. Sellers, J. A. Ferrell, G. E. MacDonald, and Dennis C. Odero

Many growers have isolated patches of weeds that should be controlled to prevent their spread. In this case, spot spraying with a herbicide would be the most economically feasible approach. Some herbicide labels allow for spot-treatments. However, the recommended amount is often given in % volume of herbicide per volume of water, or a certain amount of herbicide per 1,000 square feet.

Cogongrass (Imperata cylindrica) Biology, Ecology, and Management in Florida Grazing Lands

B. A. Sellers, J. A. Ferrell, G. E. MacDonald, S. F. Enloe, and S. L. Flory

Identification, Biology, and Management of Goosegrass [Eleusine indica (L.) Gaertn.] in Florida Turfgrasses

Pawel Petelewicz and Gregory E. MacDonald

This publication is a tool to aid turfgrass professionals, Extension specialists, and clientele in the identification and management of goosegrass in Florida turfgrasses. Written by Pawel Petelewicz and Gregory E. MacDonald, and published by the UF/IFAS Department of Agronomy, February 2025.

Identificación, Biología, y Manejo de Pata de gallina [Eleusine indica (L.) Gaertn.] en Céspedes de Florida

Pawel Petelewicz y Gregory E. MacDonald; traducido por Marco Schiavon y M. Cecilia Sánchez-Quintanilla

Esta publicación es una herramienta destinada a asistir a profesionales del césped, especialistas en Extensión y clientes, en la identificación y el manejo de la maleza conocida como “pata de gallina” o “goosegrass” (en inglés) en los céspedes de Florida. Este documento es SS-AGR-488-Span, una publicación del Department of Agronomy, UF/IFAS Extension. Fecha original de publicación: abril 2025.

Integrated Management of Invasive Plants in Natural Areas of Florida

Stephen F. Enloe, Ken Langeland, Jason Ferrell, Brent Sellers, and Greg MacDonald

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

Florida's Organo-Auxin Herbicide Rule—2021

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.

Weed Management in Sorghum

Pratap Devkota, Jason Ferrell, Greg E. MacDonald, Barry Brecke, andPratap Devkota
other_contacts: Ednaldo A. Borgato

This publication provides information on weed control options in sorghum. Written by J. A. Ferrell, G. E. MacDonald, B. J. Brecke, and P. Devkota, and published by the UF/IFAS Agronomy Department, revised January 2022.