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首页> 外文期刊>Crop Protection >Low-dose foliar treatments of the auxin analog 2,4-D reduce potato common scab and powdery scab for multiple potato cultivars and enhance root development
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Low-dose foliar treatments of the auxin analog 2,4-D reduce potato common scab and powdery scab for multiple potato cultivars and enhance root development

机译：低剂量叶面治疗蟾蜍素类似物2,4-D减少马铃薯常见的结痂和粉状痂，以获得多种马铃薯品种，增强根部发育

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摘要

Common scab and powdery scab are major soilborne diseases of potato (Solarium tuberosum). The agricultural cost of both diseases is due to discounting or rejection of infected seed tubers or the formation of lesions on the surface of the tubers that make them unmarketable or, for powdery scab, yield loss. There are no widely accessible and efficacious disease management options for either common scab or powdery scab. In prior work, low-dose foliar treatment with the auxin analog herbicide 2,4-D has been shown to reduce common scab severity of select S. tuberosum cultivars in field and greenhouse settings. In the present study, we address the broad applicability of 2,4-D in disease management by testing the efficacy of 2,4-D treatment across diverse potato cultivars and in suppressing multiple scab diseases of potato. Specifically, we tested whether low-dose 2,4-D treatment is broadly efficacious on multiple white potato cultivars used in Eastern United States potato production. Additionally, we sought to determine whether 2,4-D is efficacious for mitigating powdery scab for Russet Burbank potatoes in a commercial field setting. In two years of field trials, low-dose foliar 2,4-D treatment significantly reduced common scab of all tested potato cultivars with no impact on total tuber yield. In two years of field trials in Tasmania, Australia, low-dose foliar 2,4-D treatment also reduced powdery scab of Russet Burbank potato with no impact on total tuber yield while stimulating potato plant root growth. The ability of 2,4-D to suppress two major tuber diseases and stimulate potato root growth warrants further investigation and optimization for integration into commercial growing systems.
机译：常见的结痂和粉状痂是马铃薯（日光浴Tuberosum）的主要土壤疫苗。这两种疾病的农业成本是由于折扣或排斥感染的种子块茎或在块茎表面上形成病变，使其不批准或用于粉末状痂，产量损失。对于普通的SCAB或粉状结痂而言，没有广泛可访问和有效的疾病管理选择。在现有的工作中，已经显示出与制冷剂类似物除草剂2,4-D的低剂量叶面治疗，以减少场和温室环境中选择S. Tuberosum品种的常见SCAB严重程度。在本研究中，我们通过在各种马铃薯品种和抑制马铃薯的多种SCAB疾病中，通过测试2,4-D治疗的疗效来解决2,4-D在疾病管理中的广泛适用性。具体而言，我们测试了低剂量2,4-D治疗是否在美国东部马铃薯生产中使用的多个白色马铃薯品种广泛有效。此外，我们试图确定2,4-D是否有助于减轻赤褐色缅甸土豆在商业领域设置中的粉状切割。在两年的田间试验中，低剂量叶面2,4-D治疗显着减少了所有测试马铃薯品种的常见结痂，对总块茎产量没有影响。在澳大利亚塔斯马尼亚州的两年内试验中，低剂量叶面2,4-D治疗还减少了赤褐色伯银土豆的粉状切片，没有对总块茎产量的影响，同时刺激马铃薯植物根系生长。 2,4-D抑制两个主要块茎疾病的能力和刺激马铃薯根系增长可证，并进一步调查和优化融入商业生长系统。

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