首页> 外文期刊>Phytoprotection >Efficacy of fungicide mixtures for the management of Phytophthora infestans (US-1) on potato
【24h】

Efficacy of fungicide mixtures for the management of Phytophthora infestans (US-1) on potato

机译:杀菌剂混合物对马铃薯疫霉菌(US-1)的处理效果

获取原文
获取原文并翻译 | 示例
       

摘要

Fungicide application strategies (timing, frequency, rates and mixtures) are important for the control and resistance management of potato late blight caused by Phytophthora infestans. The efficacy of fungicide mixtures consisting of fenamidone + mancozeb and propamocarb HCL + mancozeb at various rates and in spray regimes containing metalaxyl and mancozeb was evaluated for late blight control (US-1) at four locations in Kenya. Propamocarb HCL + mancozeb significantly (P< 0.05) reduced foliar blight compared with mancozeb and the untreated control under moderate to severe disease pressure. Disease severity was significantly lower following application of propamocarb HCL + mancozeb at a rate of 4L ha super(-1) than at rates of 2L and 3L ha super(-1) in 1999 and 2000, but it was not significantly lower following applications at a rate of 3L ha super(-1) in 2000 and 2001. There were no significant differences in mean final late blight score among the three rates of 0.9, 1.0 and 1.1 kg ha super(-1) of fenamidone + mancozeb. All fungicide mixtures and application sequences significantly reduced the area under the disease progress curve and final late blight scores as compared with the unprotected control. Total and marketable tuber yield significantly (P < 0.05) increased in all fungicide-treated plots.
机译:杀真菌剂的施用策略(时间,频率,比率和混合物)对于控制和控制由疫霉疫霉引起的马铃薯晚疫病至关重要。在肯尼亚的四个地方,评估了在不同速率下以及在含有甲霜灵和Mancozeb的喷洒方案中,由苯甲酮+麦考昔布和丙草威HCl + Mancozeb组成的杀菌剂混合物的功效,用于后期疫病防治(US-1)。在中度至重度疾病压力下,丙草威HCL +代森锰锌比未代森锰锌和未经处理的对照显着(P <0.05)减少叶枯病。在1999年和2000年,以4L ha super(-1)的比例施用丙草威HCL +代森锰锌后的疾病严重程度明显低于2L和3L ha super(-1)的比例,但在施用2mg和3L ha super(-1)时并没有显着降低在2000年和2001年的3L ha super(-1)比率下,芬尼达酮+代森锰锌的0.9、1.0和1.1 kg ha super(-1)三种比率在最终最终晚疫病平均得分上没有显着差异。与未保护的对照相比,所有杀菌剂混合物和施用顺序均显着降低了疾病进展曲线和最终晚疫病分数下的面积。在所有经杀真菌剂处理的地块上,块茎总产量和可销售的块茎产量均显着提高(P <0.05)。

著录项

  • 来源
    《Phytoprotection》 |2009年第1期|共11页
  • 作者

  • 作者单位
  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 植物保护;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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