Plant-Back Intervals of Imicyafos Based on Its Soil Dissipation and Plant Uptake for Rotational Cultivation of Lettuce and Spinach in Greenhouse
| Autor: | Seon Wook Kim, Ji Hyun Yoon, Hyun-Jeong Cho, Hyo-Young Kim, In Seon Kim, Byeung-Gon Shin, Da-Jung Lim, Young Eun Kim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
plant-back interval
imicyafos Agriculture (General) Greenhouse Bioconcentration Plant Science 010501 environmental sciences 01 natural sciences S1-972 rotational crop pesticide 0105 earth and related environmental sciences Residue (complex analysis) biology Chemistry 010401 analytical chemistry Dissipation Pesticide biology.organism_classification First order 0104 chemical sciences positive list system Horticulture Spinach Agronomy and Crop Science Food Science |
| Zdroj: | Agriculture Volume 11 Issue 6 Agriculture, Vol 11, Iss 495, p 495 (2021) |
| ISSN: | 2077-0472 |
| DOI: | 10.3390/agriculture11060495 |
| Popis: | The plant-back intervals (PBIs) of imicyafos were investigated for rotational cultivation of lettuce and spinach in greenhouses. Imicyafos dissipation in soil and its plant uptake were evaluated by liquid chromatography-tandem mass spectrometry. Bioconcentration ratios (BCRs) were calculated by comparing the residues in plants to the initial residue in soil. The BCRs were used to calculate the soil acceptable residues (SARs) transferable to plants at the Positive List System (PLS) level. The number of days, PBIs for reaching SARs were obtained from the dissipation equation for imicyafos in soil. In soil, imicyafos followed first order dissipation kinetics (R2 = 0.975) with a half-life of 40.8 days. The BCRs ranged from 0.041 to 0.469 in the edible leaf parts of lettuce and 0.006 to 0.134 in those of spinach. The SARs ranged from 0.021 to 0.244 for lettuce and 0.075 to 1.667 mg kg−1 for spinach. The PBIs of imicyafos were estimated to be 213.9 to 357.3 days for lettuce and 100.8 to 283.6 days for spinach. This study suggests at least a minimum 1-year interval after the final application of imicyafos as a management method that complies with the PLS for the rotational cultivation of lettuce and spinach. |
| Databáze: | OpenAIRE |
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