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首页> 外文期刊>Pesticide Research Journal >Uptake and Persistence of Cadusafos in Tomato
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Uptake and Persistence of Cadusafos in Tomato

机译：番茄中卡杜沙的摄取和持久性

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Varietal uptake of Cadusafos, an organophosphatic nematicide, in tomato Solanum lycprersicum (Mill.) was evaluated following its soil application as broadcast @ 2.0 kg ha~(-1) and furrow @ 1.0 kg ha~(-1) at the time of transplanting of one month old seedlings of varities Pusa Ruby and Pusa Sheetal in winter. Root and shoot samples were taken at different time intervals, processed and analysed using a FPD-GC. Cadusafos persisted in both root and shoot up to 105-120 days. Root absorption was rapid but further translocation to shoot was slow. The residues accumulated in roots up to 15 days measuring as high as 2.81 μg g~(-1). Shoot contained highest residues (0.70 μg g~(-1)) by day 7 of treatment. Absorption and translocation of residues varied among the two tomato varieties. Uptake of cadusafos was more in Pusa Ruby than Pusa Sheetal. The residue levels in fruits were very low (0.002-0.009 μg g~(-1) in Pusa Ruby and 0.004-0.007 μg g~(-1) in Pusa Sheetal) by 90 days and non-detectable by 120-130 days, which were below its MRL 0.024 μg g~(-1) fixed for potatoes. Hence, the application of cadusafos in tomato as broadcast @ 2.0 kg ha~(-1) and furrow @ 1.0 kg ha~(-1) can be considered safe from the angle of toxic residues.
机译：在番茄移栽时，以2.0 kg ha〜（-1）播种和以1.0 kg ha〜（-1）播种后的土壤施用量评估了番茄番茄（Colusafos）在番茄茄中的摄取量。冬季变种Pusa Ruby和Pusa Sheetal一个月大的幼苗的数量。在不同的时间间隔获取根和芽样品，使用FPD-GC进行处理和分析。 Cadusafos在根部和根部均持续存在，长达105-120天。根吸收迅速，但进一步易位至芽缓慢。残留物在根中累积长达15天，含量高达2.81μgg〜（-1）。到处理第7天为止，枝条中残留量最高（0.70μgg〜（-1））。残留的吸收和转运在两个番茄品种中有所不同。在Pusa Ruby中，对cadusafos的吸收比对Pusa Sheetal的吸收更多。水果中的残留水平非常低（在Pusa Ruby中为0.002-0.009μgg〜（-1），在Pusa Sheetal中为0.004-0.007μgg〜（-1）），到90天时非常低，而在120-130天中则无法检测到，低于土豆的最高残留限量0.024μgg〜（-1）。因此，从有毒残留物的角度来看，可以将cadusafos在2.0 kg ha〜（-1）的番茄中和在1.0 kg ha〜（-1）的犁沟中施用是安全的。

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