Control of pepper bacterial spot and tomato bacterial speck using bactericides in combination with a plant activator

E. Rekanović, I. Potocnik, M. Stepanović, B. Todorovic, M. Mihajlović, S. Milijasevic-Marcic
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引用次数: 1

Abstract

The efficacy of a formulated product of tea tree oil (TTO) and a standard copper based bactericide in combinations with acibenzolar-S-methyl (ASM) for control of bacterial spot of pepper and bacterial speck of tomato was evaluated under controlled conditions. Treatments with copper hydroxide+ASM at both application rates and TTO+ASM showed the best efficacy in control of bacterial spot disease in pepper plants (with respective efficacy values 83.5%, 83.7 % and 86.9%). Similar efficacy was achieved by treatment with copper hydroxide alone (82.2%). On the other hand, the efficacy of TTO, applied alone, was significantly lower at both rates (63.8% and 71.5%) in bacterial spot control in pepper. The same treatments (copper hydroxide +ASM at both application rates and TTO+ASM) were most efficient in suppressing the causal agent of bacterial speck disease in tomato (87%, 82.3% and 81.6%). The efficacy of treatment with the standard bactericide copper hydroxide, applied alone, was significantly lower compared to its combination with ASM (79.1%). Similarly to the bacterial spot experiment, TTO treatments alone showed lower, although satisfactory efficacy at both application rates (66.1% and 68.9%). The results of this study showed that combination of the bioactive compound - ASM with either the standard copper hydroxide bactericide or TTO significantly improved their efficacy in both bacterial spot and speck disease control, and thus implied that combining different biorational compounds, such as essential oils and bioactive products, with standard copper treatments and their inclusion into integrated management programs are of essential importance for the control of bacterial diseases of pepper and tomato.
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杀菌剂与植物激活剂联合防治辣椒细菌性斑病和番茄细菌性斑病
在对照条件下,评价了茶树油与标准铜基杀菌剂与酸性苯甲酚- s -甲基(ASM)联合配制的产品对辣椒细菌性斑病和番茄细菌性斑病的防治效果。氢氧化铜+ASM处理和TTO+ASM处理对辣椒细菌性斑疹病的防治效果最好,分别为83.5%、83.7%和86.9%。单独用氢氧化铜治疗效果相似(82.2%)。另一方面,TTO单独施用对辣椒菌斑的防治效果(63.8%和71.5%)显著低于对照。同种处理(氢氧化铜+ASM和TTO+ASM)对番茄细菌性斑点病病原菌的抑制效果分别为87%、82.3%和81.6%。标准杀菌剂氢氧化铜单独使用的治疗效果明显低于与ASM联合使用的治疗效果(79.1%)。与细菌斑点试验相似,单独施用TTO的效果较低,但两种施用量(66.1%和68.9%)均令人满意。本研究结果表明,生物活性化合物- ASM与标准氢氧化铜杀菌剂或TTO联合使用可显著提高其对细菌性斑疹病和斑点病的控制效果,从而暗示不同生物活性化合物(如精油和生物活性产品)的联合使用,采用标准的铜处理方法并将其纳入综合管理方案,对辣椒和番茄细菌性病害的防治具有重要意义。
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发文量
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审稿时长
4 weeks
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