• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Journal of Fungi >Botanicals and Phosphonate Show Potential to Replace Copper for Control of Potato Late Blight
【2h】

Botanicals and Phosphonate Show Potential to Replace Copper for Control of Potato Late Blight

机译：植物药和膦酸酯显示出替代铜的潜力来控制马铃薯晚疫病

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Potato late blight (PLB) caused by Phytophthora infestans (Pi) is the most harmful disease in potato production worldwide. In organic farming, copper is used despite its persistence in soil and toxicity to soil organisms. To replace copper, suspensions of powders from three promising botanicals, including bark of buckthorn (Frangula alnus, FA), roots of medicinal rhubarb (Rheum palmatum) and galls of the nutgall tree (Galla chinensis), were tested in multi-year field experiments. The current study shows for the first time that botanicals could replace copper under field conditions and best PLB reduction on leaves was achieved with FA, reaching a level close to that of 2 to 3 kg copper per hectare and year. Better results than with copper were achieved with Phosfik® (Ph), a phosphonate-based product. For both FA and Ph, the mode of action is based on induced resistance, for Ph also on direct fungicidal effects. A disadvantage of Ph is the accumulation of residues in potato tubers. Nevertheless, two to three applications with 2 to 3 L/ha of Ph would be feasible to not exceed a minimal risk level (MLR) of 20 mg/kg of phosphorous acid as proposed by the European Food Safety Authority. Due to an excellent environmental profile and a complex mode of action counteracting Pi resistance, phosphonate-based products would be most suitable for sustainable PLB management in integrated pest management (IPM) programmes.
机译：疫霉疫霉（Pi）疫霉引起的马铃薯晚疫病（PLB）是全世界马铃薯生产中最有害的疾病。在有机农业中，尽管铜在土壤中持久存在并对土壤有机物有毒性，但仍使用铜。为了替代铜，在多年的野外实验中测试了三种有前途的植物药粉的悬浮液，其中包括鼠李树皮（Frangula alnus，FA），药用大黄（Rheum palmatum）的根和五倍子树（Galla chinensis）的gall子。 。当前的研究首次表明，植物药可以在田间条件下替代铜，而FA可以使叶片上的PLB减少量达到最佳，达到每公顷和每年2至3公斤铜的水平。使用膦酸酯基产品Phosfik ®（Ph）可获得比铜更好的结果。对于FA和Ph而言，作用方式均基于诱导的抗性，对于Ph而言，其作用方式也基于直接的杀真菌作用。 Ph的缺点是残留在马铃薯块茎中。尽管如此，在不超过欧洲食品安全局提议的亚磷酸20 mg / kg最低风险水平（MLR）的情况下，使用2至3 L / ha Ph的2至3次施用是可行的。由于出色的环境特征和复杂的抵抗Pi抵抗的作用方式，基于膦酸酯的产品将最适合病虫害综合治理（IPM）计划中的可持续PLB管理。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号