Dynamic modeling of Famoxadone (cas 131807-57-3) and oxathiapiprolin residue on cucumber and Chinese cabbage based on tomato and lettuce archetypes

Add time:07/26/2019    Source:sciencedirect.com

We analyzed the uptake and distribution of two pesticides (Famoxadone (cas 131807-57-3) and oxathiapiprolin) in herbaceous vegetables (cucumber and tomato) and leafy vegetables (Chinese cabbage and lettuce) to test the viability of applying existing archetypes in the dynamic plant uptake model dynamiCROP to modeling pesticide residue in other crops. Using field data and modeling, we showed that tomato was an unsuitable match for cucumber (R2 of 0.5325–0.6862) though lettuce was a good fit for Chinese cabbage (R2 of 0.8649–0.8862). We then used our cucumber data to add this as a new crop species archetype in dynamiCROP; further tests proved the accuracy of this approach (R2 of 0.8097–0.9152). In addition, we analyzed the distribution, uptake, and translocation of the two pesticides in cucumber and Chinese cabbage, using the model to better understand the mechanisms of pesticide residues over time and evaluate potential human exposure to pesticide residues from consumption of these crops. The fractions of famoxadone and oxathiapiprolin eventually ingested by humans based on our field trials ranged from 10−4 to 10−3 kg intake kg applied−1; that is, per kilogram of pesticide applied, humans would eventually consume less than one gram.

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