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Authors: Deana Namuth-Covert and Amy Kohmetscher
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1.1 Objectives
1.2 General Characteristics of Weeds
1.3 Effects on Field Crops
1.4 Direct Costs
1.5 Indirect Costs
1.6 Summary
1.7 References
2.1 Objectives
2.2 Importance of Scientific Approaches
2.3 "Ideal" Weed Characteristics
2.4 Weed Classification - Life Cycles
2.5 Weed Classification - Taxonomy
2.6 Interference
2.7 Summary
2.8 References
3.1 Objectives
3.2 Weed Biology - Perennial Weed Strategies
3.3 Vegetative Forms of Reproduction
3.4 Managing Perennial Weeds
3.5 Summary
3.6 References
4.1 Objectives
4.2 Weed Biology – Reproduction via Seeds
4.3 Weed Seed Bank (also known as soil seed bank)
4.4 Types of Dormancy: Morphological and Physical
4.5 Types of Dormancy Continued: Physiological
4.6 Phytochrome
4.7 Seed Dispersal Mechanisms
4.8 Migrations
4.9 Comparing Annuals and Perennials
4.10 Summary
4.11 References
5.1 Objectives
5.2 Learning Materials
5.3 Resource Competition
5.4 Law of Constant Final Yield
5.5 Crop and Weed Competition
5.6 Types of Competition and Responses
5.7 Critical Period of Weed Control
5.9 References
5.8 Summary
6.1 Objectives
6.2 Characteristics of Invasive Weeds
6.7 References
6.6 Summary
6.5 Where to Find Lists of Invasive Plants
6.3 Transition Stages
6.4 Are Agronomic Weeds Also Invasive Weeds?
7.1 Objectives
7.2 What Makes a Good Resource on Research Findings?
7.3 Finding Credible Sources
7.4 Prioritizing Research Investments
7.5 Summary
7.6 References
8.1 Objectives
8.2 Federal Seed Act
8.3 Noxious Weeds - What are they and legal requirements.
8.4 Summary
8.5 References
9.1 Objectives
9.2 Weed Management Strategies - Prevention
9.3 Weed Management Strategies - Eradication
9.4 Weed Management Strategies - Control
9.5 Integrated Weed Management (IWM)
9.6 Research-Based IWM Successes
9.7 Summary
9.8 References
10.1 Objectives
10.2 Cultural Practices
10.3 Biological Weed Control Methods
10.4 Summary
10.5 References
11.1 Objectives
11.2 Introduction
11.3 Tillage
11.4 Examples of Tillage Weed Control
11.5 Other Mechanical Weed Control Options
11.6 Summary
11.7 References
12.1 Objectives
12.2 Advantages and Disadvantages of Chemical Weed Control
12.3 History of Herbicides
12.4 Discovering New Herbicides
12.5 Describing Herbicides
12.6 Classifying Herbicides: Terminology
12.7 Classifying Herbicides: Mode of Action
12.9 Classifying Herbicides: Family and Site of Absorption
12.8 Classifying Herbicides: Site of Action
12.10 Examples of Classification System
12.11 Using the Classification System
12.12 Summary
12.13 References
13.1 Objectives
14.1 Objectives
14.2 Foundational Concepts
14.3 Herbicide Effectiveness - Whole Plant
14.4 Soil Active Herbicides
14.5 Soil Herbicide Placement Importance
14.6 Environmental Conditions and Crop Injury
14.7 Effects of Weed Densities and Soil Properties
14.8 Foliar Active Herbicides
14.9 Foliar Absorption Challenges
14.10 Overcoming Cuticle Barriers to Improve Absorption
14.11 Cuticle Barriers - Limited Moisture Effects
14.12 Cuticle Barriers - Weed Growth Stage Effects
14.13 Weed Population Genetic Diversity
14.14 Fate of Herbicides
14.15 Summary
14.16 References
15.1 Objectives
15.2 Mode of Action Resources
15.3 Importance of Lipids
15.4 Fatty Acid Biosynthesis and Elongation
15.5 The ACCase Enzyme
15.6 Herbicides that Inhibit ACCase
15.7 Herbicide Resistance to ACCase Inhibitors
15.8 Seedling Shoot Growth Inhibitors
15.9 Herbicides that Inhibit Very Long Chain Fatty Acids
15.10 Herbicide Resistance to Seedling Shoot Growth Inhibitors
15.11 Summary
15.12 References
16.1 Objectives
16.2 Importance of Proteins and Amino Acids
16.3 Branched Chain Amino Acid Biosynthesis and the ALS Enzyme
16.4 Herbicides that Inhibit ALS
16.5 Herbicide Resistance to ALS Inhibitors
16.6 The EPSP Synthase Enzyme (Aromatic Amino Acid Synthesis) – Group 9
16.7 Herbicides that Inhibit EPSP Synthase
16.8 Resistance to Aromatic Amino Acid Inhibitors in Crops and Weeds
16.9 The Nitrogen Metabolism Inhibitor
16.10 Summary
16.11 References
17.1 Objectives
17.2 Importance of Auxin
17.3 Herbicides that Mimic or Interfere with Auxin
17.4 Injury Symptoms
17.5 Herbicide Resistance to Growth Regulators
17.6 Summary
17.7 References
18.1 Objectives
18.2 Overview of Herbicides and Photobiology
18.3 Importance of PPO
18.4 Herbicides that Interfere with PPO (A Cell Membrane Disrupter SOA)
18.5 Herbicide Resistance to PPO Inhibitors
18.6 Pigment Inhibitors and Importance of Carotenoids
18.7 Herbicides that Inhibit Pigments
18.8 Herbicide Resistance to Pigment Inhibitors
18.9 Summary
18.10 References
19.1 Objectives
19.2 Introduction to Herbicides Affecting Photosystems
19.3 Importance of the Photosystems
19.4 Herbicides that Interfere with Photosystem II
19.5 Herbicide Resistance to Photosystem II Inhibitors
19.6 Herbicides that Interfere with Photosystem I
19.7 Herbicide Resistance to Photosystem I Inhibitors
19.8 Summary
19.9 References
20.1 Objectives
20.2 Importance of Microtubules
20.3 Herbicides that Interfere with Seedling Root Growth
20.4 Herbicide Resistance to Seedling Growth Inhibitors
20.5 Summary
20.6 References
Principles of Weed Control Copyright © by Deana Namuth-Covert and Amy Kohmetscher. All Rights Reserved.
