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首页> 外文期刊>Pesticide Research Journal >Effect of Soil Conditions on Persistence of Chlorpyrifos
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Effect of Soil Conditions on Persistence of Chlorpyrifos

机译：土壤条件对毒死Per持久性的影响

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摘要

The persistence of chlorpyrifos in red loam (Oxisol, fine loamy kaolinitic isohyperthermic typic Kandiustult) soil was studied with ten different treatment combinations to assess the effect of a crop individually and in combination with organic matter and lime. At 0-15 cm soil depth, initial deposit of chlorpyrifos when applied @400 g ha~(-1) was found to vary from 4.0-11.3 μg g~(-1), which reduced to 1.6- 7.3 μg g~(-1) after 75 days of application, corresponding to a reduction of 60-35.4%. Maximum persistence of chlorpyrifos was observed with the addition of organic manure @ 201 ha~(-1), witn a half life of 235 days. The half life of chlorpyrifos in cropped condition was only 149 days, while application of organic manure @ 101 ha~(-1) did not hasten the dissipation of chlorpyrifos and application of lime at recommended dose further lowered it to 67-70 days. Among the different treatments, application of lime was found to have maximum influence on the degradation of chlorpyrifos in soil, followed by organic matter addition at lower rate. The presence of a crop significantly influenced the degradation of chlorpyrifos in soil. Treatment with chlorpyrifos did not affect soil properties
机译：用十种不同的处理组合研究了毒死rif在红色壤土（Oxisol，细壤土高岭土等温热型典型Kandiustult）中的持久性，以单独和与有机物和石灰组合评估作物的效果。在土壤深度为0-15 cm时，毒死rif的初始沉积物在施用400 g ha〜（-1）时发现为4.0-11.3μgg〜（-1），减少到1.6- 7.3μgg〜（- 1）施用75天后，减少了60-35.4％。在201 ha〜（-1）的条件下添加有机肥，毒死rif具有最大的持久性，半衰期为235天。毒死rif在耕作条件下的半衰期仅为149天，而施用有机肥@ 101 ha〜（-1）并不能加速毒死recommended的消散，而按推荐剂量施用石灰进一步将其降至67-70天。在不同的处理方法中，发现石灰的施用对土壤中毒死rif的降解具有最大的影响，然后以较低的速率添加有机物。作物的存在显着影响了毒死rif在土壤中的降解。用毒死rif处理不会影响土壤特性

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