Romero A M, Kousik C S, Ritchie D F
Department of Plant Pathology, North Carolina State University, Raleigh 27695-7616.
Plant Dis. 2001 Feb;85(2):189-194. doi: 10.1094/PDIS.2001.85.2.189.
Bell pepper plants sprayed with the chemical acibenzolar-S-methyl (ABM, Actigard 50 WG) showed resistance to subsequent infections with the bacterial spot agent Xanthomonas axonopodis pv. vesicatoria. Induction of resistance was independent of the cultivar used, and was expressed as early as 3 days after treatment and continued for at least 2 weeks. In the field, applications of ABM every 2 weeks, alone or in combination with copper, resulted in disease control similar to the standard treatment of copper plus maneb. Yield response was variable, with certain combinations of chemical treatments and cultivars producing yields as large as the copper plus maneb treatment. In contrast, weekly applications during the entire crop season had a negative impact on yield. In plots maintained free of bacterial spot, applications of ABM every 2 weeks caused a reduction in yield for one cultivar of six tested. The use of chemical inducers for the control of bacterial spot on bell pepper, while generally promising, may result in an unpredictable loss in fruit yield.
用化学物质烯丙苯噻唑（ABM，Actigard 50 WG）喷洒的甜椒植株对随后感染细菌性斑点病菌黄单胞菌辣椒斑点病表现出抗性。抗性的诱导与所用品种无关，在处理后3天就开始表现，并持续至少2周。在田间，每2周单独或与铜混合施用ABM，病害防治效果与铜加代森锰锌的标准处理相似。产量反应各不相同，某些化学处理和品种的组合产量与铜加代森锰锌处理一样高。相比之下，在整个作物季节每周施用会对产量产生负面影响。在保持无细菌性斑点的地块中，每2周施用ABM会导致六个测试品种中的一个品种产量下降。使用化学诱导剂防治甜椒细菌性斑点病虽然总体上前景看好，但可能导致果实产量出现不可预测的损失。
