How Herbicides Work

Agdex 606-2 $35.00 How Herbicides Work is targeted at professionals who work with herbicides. The book may also prove valuable to producers who have an interest in the technical aspects of herbicides. This 134 page book provides a comprehensive look at: how herbicides enter and move in the plant how herbicides break down in the plant and soil how plants develop resistance to herbicides how herbicides can best be transferred from the sprayer to the target

Copies of this book may be purchased by:

• Online credit card purchase, click here.
• Cheque or money order, please complete the order form and send it to our Publications Office.
• Calling 780-427-0391 (payment made using automated system and telephone keypad).

• Target sites
• Why herbicides kill plants
• Physical/Chemical properties
• Uptake
• Translocation
• Selectivity and metabolism
• Toxicity

• Physical/Chemical properties
• Inhibition of cell division and cell enlargement
• Uptake and translocation
• Metabolism and selectivity
• Symptoms
• Toxicity
• Implications for application

• Physical/Chemical properties
• Inhibition of very long chain fatty acids
• Uptake and translocation
• Metabolism and selectivity
• Toxicity
• Symptoms
• Implications for application

• Physical/Chemical properties
• Inhibition of acetolactate synthase (ALS)
• Uptake and translocation
• Metabolism and selectivity
• Toxicity
• Symptoms
• Implications for application

• Physical/Chemical properties
• Inhibition of EPSPS
• Uptake and translocation
• Metabolism and selectivity
• Symptoms
• Toxicity
• Implications for application

• Physical/Chemical properties
• Inhibition of gluatamine synthase
• Uptake and translocation
• Metabolism and selectivity
• Toxicity
• Symptoms
• Implications for application

• Physical/Chemical properties
• Inhibition of ACCase
• Uptake and translocation
• Metabolism and selectivity
• Toxicity
• Symptoms
• Implications for application

• Physical/chemical properties
• De-regulation of growth
• Quinclorac
• Uptake and translocation
• Metabolism and selectivity
• Symptoms
• Toxicity
• Implications for application

• PS II function
• PS I function

• Physical/chemical properties
• Inhibition of PS II electron transport
• Uptake and translocation
• Metabolism and selectivity
• Symptoms
• Toxicity
• Implications for application

• Physical/chemical properties
• Uptake and translocation
• Inhibition of PS I electron transport
• Metabolism and selectivity
• Toxicity
• Symptoms
• Implications for application

• What is herbicide resistance?

• Severity of the resistance problem
• Herbicide Resistance Development
• Selection for herbicide resistance
• Mechanisms for surviving herbicides
• Target site resistance
• Herbicide metabolism
• Rapid growth
• Other mechanisms
• Multiple herbicide resistance

• Diagnosing herbicide resistance in the field2
• Patches
• Field tests
• Testing facilities on the prairies

• Vary weed control measures
• Determine weeds at risk
• Determine herbicides at risk
• Vary herbicide used by group
• Reduce weeds selected
• Include herbicide mixtures
• Avoid residual herbicides
• Use certified seed and clean management practices
• Monitor for suspicious weed patches

• Seed-bank management
• Site-by-site
• Patch control
• Non-selective herbicide options
• Other weed control options
• Stop spread of resistant weeds

• Atomization
• Transport to target
• Impaction and retention
• Deposit formation
• Movement in/on plant
• Biological effect
• Why is this important?

• Basic processes
• Nozzle nomenclature
• Nozzle wear
• Measurement of droplet size spectra
• Other nozzles
• Calibration and patternation

• Droplet dynamics

• Impaction
• Retention
• Canopy penetration

• What kind of spray deposit?

• An introduction to adjuvants

• Other groups of adjuvants

• Surface tension
• Atomization
• Spray retention
• Evaporation and persistence
• Deposit formation
• Cuticle penetration
• Water quality and ammonium sulfate fertilizer
• Environment

• Weather conditions

• Coarser sprays
• Pressure
• Carrier volume
• Low-drift nozzles
• Drift-reducing spray adjuvants
• Protecting sprays from wind

• Journals
• Books on herbicide mechanism of action5
• Other references
• Web sites