PRIN OF WEED SCIENCE
PRIN OF WEED SCIENCE PLS 4601
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This 3 page Class Notes was uploaded by Sarai Hauck on Friday September 18, 2015. The Class Notes belongs to PLS 4601 at University of Florida taught by Staff in Fall. Since its upload, it has received 41 views. For similar materials see /class/206856/pls-4601-university-of-florida in Plant Science at University of Florida.
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Date Created: 09/18/15
lieview of Lecture 8 Herb39ICIde resudues 39 Residue Amounts of material left on or in food crop 39Tolerance level amount to which continued exposure does not result in adverse health effect 39This level set 100 fold lower that causing even minimal effects in test species FL in um i Herbicide Registration Only about 1 out of 20000 compounds synthesized make it to market Hazards and toxicity ToXicology and related information 39Important to the understanding of effect on human llealt 39 Toxicity measure of amount of compound that is harmful or lethal 39 Hazard probability of encountering a harmful dose of a compound Fate and Impact in the Environment Herbicide residues and persistence measured in soil water and air Misu3e due l39oE Ignorance of characteristic activity Carelessness in application Herbicide CIaSsification 39 Response differences between species 39 Coverage 39 Length of Soil persistence 39 Pathway of Movement 39 Mode of action 39 Herbicide Chemistry 39 Type of Application 39 Placement in the field FL Chemical Weed quotCibntrol History Phenoxy herbicides Objectives for Today Soil Applied herbicides Fate in soil Degradation Leaching Persistence Herbicide Nomenclature Chemical name Common name Trade or Brand name Active ingredient ObjecfiVes for Today Herbicide Absorption and Translocation Soil Applied herbicides Root absorption Barriers How come in contact with herbicide Shoot absorption FL qu man i Herbicide Absorption and Translocation