Title: Uptake and translocation of chlorpyrifos in two leafy vegetables.
Abstract: Using water-culture method, the effect of chlorpyrifos on the growth of leafy vegetables(spinach and romaine lettuce), the degradation of chlorpyrifos in different culture solutions, and the uptake and translocation of chlorpyrifos in vegetables were studied. Our results showed that chlorpyrifos at low concentrations(1.0 and 10.0 mg·L-1)had no significant inhibitory effects on the growth of vegetables. However, chlorpyrifos at a higher concentration(100.0 mg·L-1)had significant inhibitory effects on the growth of vegetables and romaine lettuce appeared to be more sensitive to chlorpyrifos at this concentration than spinach. Both tested vegetables greatly accelerated degradation of chlorpyrifos in culture solutions. The degradation rates of chlorpyrifos in solutions were as follows:nutrition solution with spinach nutrition solution with romaine lettuce pond water nutrition solution. Both tested vegetables demonstrated strong uptake capabilities and similar uptake patterns. The time reaching chlorpyrifos maximum uptake by spinach root was shorter than that by romaine lettuce root, but that by stems and leaves of two cabbages was about the same.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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Cited By Count: 1
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