Agronomy and Horticulture Department
Practical Applications of Herbicide Physiology
Date of this Version
2005
Document Type
Article
Citation
Plant and Soil Sciences eLibrary (PASSeL) Lesson
This lesson has been assigned University of Nebraska-Lincoln Cooperative Extension Journal Series Number 1021
Abstract
This lesson will focus on the impact of herbicide and plant characteristics important in determining herbicide performance. Visual images will be used to illustrate several principles including herbicide site of uptake, translocation, site of action sensitivity, and environmental effects on herbicide performance. This information provides a basis for maximizing herbicide performance.
Overview
This lesson will examine the basic requirements for herbicide performance. This lesson will examine how herbicide and plant characteristics interact as a basis for explaining herbicide performance. The application requirements of both soil and foliar active herbicides will be examined in relation to their characteristics. The influence of environmental conditions on herbicide performance, both weed control and crop injury, will be examined.
Objectives
- Understand the influence of herbicide site of absorption and translocation characteristics on herbicide performance.
- Explain the effects of temperature and moisture on herbicide activity.
- Understand the mechanisms giving rise to herbicide selectivity.
- Understand the influence of weed seedling density on herbicide effectiveness.
- Explain the effect of weed size and age on sensitivity to herbicides.
Modules:
Comments
Copyright © 2005 Alex R. Martin and Deana M. Namuth. Used by permission.
JNRLSE approved 2005
This project was supported in part by the National Research Initiative Competitive Grants CAP project 2011-68002-30029 from the USDA National Institute of Food and Agriculture, administered by the University of California-Davis and by the National Science Foundation (NSF), Division of Undergraduate Education, National SMETE Digital Library Program, Award #0938034, administered by the University of Nebraska. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the views of the USDA or NSF.
Development of this lesson was supported in part by the Cooperative State Research, Education, & Extension Service, U.S. Dept. of Agriculture under Agreement Number 00-34416-10368 administered by Cornell University and the American Distance Education Consortium (ADEC). Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the U.S. Department of Agriculture.