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  • Title: Dislodgeable residues of ethion in Florida citrus and relationships to weather variables.
    Author: Nigg HN, Allen JC, Brooks RF, Edwards GJ, Thompson NP, King RW, Blagg AH.
    Journal: Arch Environ Contam Toxicol; 1977; 6(2-3):257-67. PubMed ID: 901006.
    Abstract:
    Five different treatments of ethion on Valencia orange trees were compared for decay rates and for ethion monoxon and ethion dioxon production under different environmental conditions. The oxon metabolite levels observed were low and always below the residue level of ethion itself. There were no significant differences in the decay rates of ethion between treatments. A model of ethion decay utilizing environmental variables as a time base is presented. This model explains 94% of the variation observed in ethion decay during very wet and very dry periods in Florida. The application of these results and general experimental approach to worker safety reentry standards is discussed.
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