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首页> 外文期刊>Plant Disease >Effect of Application Frequency and Reduced Rates of Acibenzolar-S-Methyl on the Field Efficacy of Induced Resistance Against Bacterial Spot on Tomato
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Effect of Application Frequency and Reduced Rates of Acibenzolar-S-Methyl on the Field Efficacy of Induced Resistance Against Bacterial Spot on Tomato

机译：施用频率和降低的苯甲酰-S-甲基甲酯用量对诱导的番茄细菌性斑点抗药性的田间效力

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Huang, C.-H., Vallad, G. E., Zhang, S., Wen, A., Balogh, B., Figueiredo, J. F. L., Behlau, F., Jones, J. B., Momol, M. T., and Olson, S. M. 2012. Effect of application frequency and reduced rates of acibenzolar-S-methyl on the field efficacy of induced resistance against bacterial spot on tomato. Plant Dis. 96:221-227. Acibenzolar-S-methyl (ASM), a plant activator known to induce systemic acquired resistance, has demonstrated an ability to manage a number of plant diseases, including bacterial spot on tomato caused by four distinct Xanthomonas spp. The aim of this study was to evaluate application rate and frequency of ASM in order to optimize field efficacy against bacterial spot in Florida, while minimizing its impact on marketable yields. ASM was applied biweekly (once every 2 weeks) as a foliar spray at a constant concentration of 12.9, 64.5, and 129 mu M throughout four field experiments during 2007-08. A standard copper program and an untreated control were also included. Overall, biweekly applications of ASM did not significantly reduce disease development or the final disease severity of bacterial spot compared with the copper-mancozeb standard or the untreated control. Only one experiment showed a significant reduction in the final disease severity on plants treated with ASM at 129 mu M compared with the untreated control. Three additional field trials conducted during 2009-10 to evaluate the effects of weekly and biweekly applications of ASM at concentrations of 30.3 to 200 mu M found that weekly applications provided significantly better disease control than biweekly applications. The tomato yields were not statistically improved with the use of ASM relative to the untreated control and standard copper program. Weekly ASM applications at rates as low as 75 mu M (equivalent to 1.58 g a.i./ha in 100 liters of water or 0.21 oz. a.i./acre in 100 gallons of water) to 200 mu M (equivalent to 4.20 g a.i./ha in 100 liters of water or 0.56 oz. a.i./acre in 100 gallons of water) were statistically equivalent in managing bacterial spot of tomato without significantly reducing yield compared with the untreated control.
机译：Huang，C.-H.，Vallad，GE，Zhang，S.，Wen，A.，Balogh，B.，Figueiredo，JFL，Behlau，F.，Jones，JB，Momol，MT和Olson，SM 2012。施用频率和降低的苯并噻唑-S-甲基比例对诱导的番茄抗细菌斑病抗性的田间效果。植物病96：221-227。 Acibenzolar-S-methyl（ASM）是一种已知能引起系统获得性抗性的植物激活剂，已显示出能够处理多种植物病害的能力，包括由四种不同的Xanthomonas spp引起的番茄细菌斑。这项研究的目的是评估ASM的施用率和频率，以优化田间对佛罗里达州细菌斑的功效，同时最大程度地减少对可销售产量的影响。在2007-08年度的四个田间试验中，每两周一次（每两周一次）以叶面喷洒ASM的形式，恒定浓度为12.9、64.5和129μM。还包括标准铜程序和未经处理的对照。总体而言，与铜-锰锌标准品或未经处理的对照相比，每两周施用ASM不会显着降低疾病发展或细菌斑的最终疾病严重程度。与未经处理的对照相比，只有一项实验显示在以129μM的ASM处理的植物上，最终病害的严重程度显着降低。在2009-10年度进行的另外三场田间试验评估了ASM在30.3至200μM的浓度下每周和每两周一次施用的效果，发现与两周一次相比，每周施用可提供更好的疾病控制。相对于未经处理的对照和标准铜计划，使用ASM番茄产量没有统计学上的提高。每周ASM施用量低至75μM（相当于100升水中1.58 g ai / ha或100加仑水中0.21 oz。ai /英亩）至200μM（相当于4.20 g ai / ha）与未处理的对照相比，在处理番茄细菌斑上，在不显着降低产量的情况下，100升水或0.56盎司活性成分/英亩（100加仑水中）在统计学上等效。

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