爱荷华农民必须管理粪肥以减少污染,但缺乏公共记录会阻碍监督和执行。 Iowa farmers must manage manure to reduce pollution, but lack of public records hinders oversight and enforcement.

从事大规模牲畜饲养作业的爱荷华农民必须遵循肥料管理计划,限制氮和磷的施用,但记录保存在农场,不公开分享,引起对透明度和执行的关切。 Iowa farmers with large livestock operations must follow manure management plans to limit nitrogen and phosphorus application, but records are kept on farms and not publicly shared, raising concerns about transparency and enforcement. 环境团体以水道污染为由,敦促强制性公共报告和加强监督。 Environmental groups urge mandatory public reporting and stronger oversight, citing pollution in waterways. 爱荷华州的农民资源局虽然有权调查违规行为, 但却有限的罚款能力, 阻碍了对农业排水的有效监管. The Iowa DNR has limited capacity to issue fines despite authority to investigate violations, hindering effective regulation of agricultural runoff.