Jason A. Ferrell

0000-0002-3428-6663

Diagnosing Herbicide Injury in Cotton

Sarah Berger, Jason Ferrell, and Pratap Devkota

This publication describes the behavior and injury symptoms of various kinds of herbicides in cotton.

Blackberry and Dewberry: Biology and Control

Brent Sellers, Pratap Devkota, and Jason Ferrell

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.

Soft Rush (Juncus effusus) Biology and Control in Pastures

Brent Sellers and Jason Ferrell

Are Homemade "Pesticides" Legal?

Brett Bultemeier and Jason Ferrell

Diagnosing Herbicide Injury in Peanut

S. Morichetti, J. Ferrell, and P. Devkota

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

Common Pokeweed

Brent Sellers and Jason Ferrell

Fireweed (Heartleaf Nettle) Control in Pastures

Brent Sellers, Jason A. Ferrell, and Pratap Devkota

Florida Pusley Control in Pastures

Brent Sellers, Brandon Fast, and Jason Ferrell

SS-AGR-314 describes this common broadleaf weed found in pastures, cultivated fields, waste areas, and roadsides throughout Florida. Includes a table detailing the efficacy of various herbicides at 2, 4, and 8 weeks, and approximate cost.

Control of Redroot (Lachnanthes caroliniana) in Pastures

Brent Sellers, Joseph Walter, and Jason Ferrell

SS-AGR-290 describes this wetland plant with red rhizome and flattened leaves which can be a problem in newly established, declining, or mole-cricket damaged pastures. Includes herbicide recommendations.

Creeping Indigo, A Poisonous Plant of Concern in Florida Pastures

Robert MacKay, Ed Jennings, Brent Sellers, Jason Ferrell, and Amanda House

Managing Bahiagrass in Bermudagrass, Stargrass, and Limpograss Pastures

Brent Sellers

Wax Myrtle Biology and Control in Pastures

Brent Sellers

Bamboo Control

Jason Ferrell, Mark Czarnota, and Ken Langeland

Saw Palmetto Control: Individual Plant and Broadcast Application

Brandon Fast, Jason Ferrell, and Brent Sellers

Managing Pesticide Drift

F. M. Fishel and J. A. Ferrell

Cressleaf Groundsel (Butterweed) Identification and Management in Pastures

B. A. Sellers, Pratap Devkota, and J. A. Ferrell

Flat-top Goldenrod (Euthamia caroliniana): Biology and Control in Pastures

B. A. Sellers and J. A. Ferrell

Water pH and the Effectiveness of Pesticides

Frederick M. Fishel and J. A. Ferrell

Identification and Control of Coral Ardisia (Ardisia crenata): A Potentially Toxic Plant

B. A. Sellers, S. F. Enloe, Patrick Minogue, and J. Walter

A UF/IFAS numbered Management. Published by Integrated Pest Management

Soybean Production in Florida

D. L. Wright, J. A. Ferrell, S. Sanjel, and I. Small

This publication discusses land preparation and planting, fertilization, crop residue management, irrigation, disease and nematode management, variety selection, weed control, insect management, and harvesting and storage for soybean production in Florida. Written by D. L. Wright, J. A. Ferrell, S. Sanjel, and I. Small, and published by the UF/IFAS Agronomy Department, revised July 2022.

Weed Management in Fence Rows

Brent Sellers and Jason Ferrell

A UF/IFAS numbered Management.

Tank-Mix Options for Control of Tropical Soda Apple and Dogfennel

Brent Sellers, Pratap Devkota, and Jason A. Ferrell

A UF/IFAS numbered Fact Sheet.

2025–2026 Florida Citrus Production Guide: Useful Telephone Numbers

Jason A. Ferrell and Frederick M. Fishel

2025–2026 Florida Citrus Production Guide

Weed Management in Limpograss

Brent Sellers, Pratap Devkota, and Jason A. Ferrell

A UF/IFAS numbered Fact Sheet.

Control of Lantana in Pastures

Brent Sellers, Edward W. Jennings, and Jason A. Ferrell

A UF/IFAS numbered Management. Published by Plant Systems

Thistle Control in Pastures

Brent Sellers, Pratap Devkota, and Jason Ferrell

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

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

Bracken Fern Control in Pastures

B. Sellers, J. Ferrell, and T. Wilson

This publication discusses chemical control of bracken fern in pastures. Written by B. Sellers, J. Ferrell, and T. Wilson, and published by the UF/IFAS Agronomy Department, revised August 2021.

Identification and Control of Southern Sandbur (Cenchrus echinatus L.) in Hayfields

Brent Sellers, Hunter Smith, and Jason A. Ferrell

A UF/IFAS numbered Management. Published by Plant Systems

Spiny Amaranth (Spiny Pigweed) Control in Pastures

Brent Sellers and Jason Ferrell

Describes this summer annual with sharp spines which is common in Florida pastures, especially around feeding pens and water troughs. Includes control recommendations.

Identification and Control of Johnsongrass, Vaseygrass, and Guinea Grass in Pastures

Brent Sellers, Hunter Smith, and Jason Ferrell

Johnsongrass is a common weed throughout the South and Midwest. People often incorrectly call any weed johnsongrass, but it is one of three grasses found in Florida pastures. Knowing the differences between johnsongrass, vaseygrass, and guinea grass will help with proper weed management.

Weed Control in Perennial Peanut

Brent Sellers and Jason Ferrell

A UF/IFAS numbered Management. Published by Plant Systems

Prickly Pear Cactus Control in Pastures

Brent Sellers, Pratap Devkota, and Jason A. Ferrell

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

Herbicide Application Techniques for Woody Plant Control

Jason Ferrell, Stephen Enloe, and Brent Sellers

The progression of trees and other woody plants into pastures, fencerows, ditch banks, rights-of-way and other areas is a common occurrence. These woody species can be particularly troublesome and require control since they will compromise fence intregrity, impede canal drainage, interfere with transmission of electricity, and some species (such as cherry trees) are highly poisonous to livestock. The aim of this publication is to detail the techniques for the removal of woody plants.

Spiderwort Control in Hay Fields and Pastures

Michael Durham, Pratap Devkota, Jason Ferrell, and Brent Sellers

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

How to Obtain an Aldicarb Application Permit for Florida Cotton or Peanut

Zane J. Grabau, Ethan Carter, Libbie Johnson, Jay Ferrell, Dale Dubberly, and Tamara James

This publication is intended to guide growers through the process of applying for a free permit to use aldicarb, an insecticide/nematicide subject to particular restrictions because of its highly toxic nature and concerns about groundwater contamination when it is improperly applied. Aldicarb is currently labeled only for cotton and peanut in Florida. It is a restricted-use pesticide; thus applicators must have a current and valid private or commercial Florida pesticide applicator’s license with a row crop category designation and must obtain an aldicarb permit from Florida’s Department of Agriculture and Consumer Services before applying this product in Florida. This publication provides a guide to the permit application process for aldicarb.

Diagnosing Herbicide Injury in Corn

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

A UF/IFAS numbered Fact Sheet.

Florida's Organo-Auxin Herbicide Rule—2021

B. Bultemeier, J. A. Ferrell, and G. E. MacDonald

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 Alfalfa

Pratap Devkota, Brent A. Sellers, and Jason A. Ferrell

A UF/IFAS numbered Management.

2025–2026 Florida Citrus Production Guide: Interpreting PPE Statements on Pesticide Labels

Jason A. Ferrell and Frederick M. Fishel

2025–2026 Florida Citrus Production Guide

Dogfennel (Eupatorium capillifolium): Biology and Control

B. A. Sellers, Pratap Devkota, and J. A. Ferrell

A UF/IFAS numbered Management.

Tropical Soda Apple: Biology, Ecology, and Management of a Noxious Weed in Florida

B. A. Sellers, Pratap Devkota, J. Jeffrey Mullahey, and J. A. Ferrell

A UF/IFAS numbered Management.

Weed Management in Sorghum

J. A. Ferrell, G. E. MacDonald, B. J. Brecke, and P. Devkota

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.

Weed Management during Pasture Establishment

Brent Sellers, Joao Vendramini, and Marcelo Wallau

This publication details techniques for chemical weed control prior to and during pasture establishment and is intended for county Extension faculty as well as owners and managers of grazing lands. Written by Brent Sellers, Pratap Devkota, Joao Vendramini, and Marcelo Wallau, and published by the UF/IFAS Agronomy Department, revised August 2021.