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Spray additives for
by Brent Pringnitz and Bob Hartzler
The following is a Powerpoint slide presentation developed for the 1997 Private Pesticide Applicator Training program. To begin the show, click here or select the slide you wish to view from the list below.
Objectives: This presentation is designed to provide the producer with background information on herbicide additives, their function, and selection. There are many additives available to choose from, and making the correct selection can be difficult. By understanding how the individual components function, better choices can be made. The last portion of the presentation deals with crop injury issues as they relate to additives.
Spray Additives for Postemergence Herbicides
Reasons for Increase in Postemergence Herbicides
Steps for Consistent Postemergence Weed Control
Different Roles of Spray Additives
Types of Spray Additives
Reduction in Droplet Surface Tension
Types of Surfactants
Crop Oil Concentrates
Selecting Additives for Postemergence Use
Additive Selection Influences Both Weed Control and Crop Safety
Additive Selection for Herbicide Tank-Mixes
Prepared by Brent Pringnitz, extension program specialist, Department of Agronomy, Iowa State University
more information contact:
ISU Extension Agronomy
2104 Agronomy Hall
Ames, Iowa 50011-1010
Voice: (515) 294-1923
Fax: (515) 294-9985
site designed and managed by Brent Pringnitz.
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