先正达已经驳斥美国环境学家集团的断言:它可能已经非法抑制表明由于广泛使用玉米田除草剂莠去津引起不利影响的调查发现。来自资源保护委员会(NRDC)已经要求EPA对先正达的活动进行犯罪调查,并撤消市场上的莠去津。由NRDC选出的调查之一是由该公司在路易斯安娜州的St.Gabriel的制造厂进行的,它表明了莠去津与制造厂中工人的前列腺癌之间的联系,调查之二是由加利福尼亚大学的研究人员进行的,发现在实验室中,暴露于低水平的莠去津可引起非洲爬行蛙的性变化。先正达坚持,它已经按常规与EPA共享它的St.Gabriel厂雇员的健康与安全监控结果,该公司指出,当来自该工厂和其它 Syngenta has dismissed the assertion by the group of U.S. environmentalists that it may have unlawfully suppressed the findings of a survey that showed the adverse effects caused by the widespread use of the atrazine herbicide atrazine. The Natural Resources Defense Council (NRDC) has asked the EPA to conduct a criminal investigation into Syngenta’s activities and withdraw the atrazine from the market. One of the surveys selected by NRDC was conducted by the company’s manufacturing facility in St. Gabriel, Louisiana, which showed the link between atrazine and prostate cancer among workers in the manufacturing plant. The second survey was conducted by Researchers at the University of California conducted a study that found that exposure to low levels of atrazine in laboratories can cause sexual changes in African crawling frogs. Syngenta insisted it had routinely shared with the EPA the results of the health and safety monitoring of its employees at the St. Gabriel Plant, which the company states that when it comes from the plant and others