New biofumigation-based approaches to sustainable control of soil-borne pathogens

基于生物熏蒸的土传病原体可持续控制新方法

• 批准号: 100867
• 金额: $ 34.06万
• 依托单位: BERRY GARDENS GROWERS LIMITED
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2011
• 资助国家: 英国
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=100867
• 关键词: New; biofumigation; based; approaches; sustainable

Control of soilborne pathogens such as Verticillium wilt has become a major problem in UK horticulture since withdrawal of the broad-spectrum chemical fumigant methyl bromide. A previous project involving the RTO's investigated biofumigant green crops as replacements for methyl bromide. Cultivation and incorporation of biofumigant crops proved difficult, but a brassica seed meal soil amendment and lavender byproducts were highly effective against Verticillium wilt in strawberry. Various isothiocyanates in the former and monoterpenoid compounds in the latter were identified as the active chemicals. This project will exploit this knowledge to develop novel biofumigant products for control of soilborne diseases, particularly Verticillium wilt in strawberry, but with potential application to a much wider range of crops including raspberry, potato and cotton. Firstly, microencapsulation technology will be adapted to develop a slow-release formulation of the biocidal terpenoid compounds in lavender and delivery systems appropriate for use by growers. Secondly, the possibility of producing a novel, pelletised formulation of lavender waste will be investigated as an alternative for organic growers. These and the brassica seed meal product will be evaluated in the laboratory and in several field sites for their efficacy against Verticillium wilt in strawberry, alone and in combination. Their effects on other soil-borne pathogens and non-target organisms will also be determined. The project will provide optimised strategies for using these new products in practice under different levels of pathogen inoculum and various soil moisture conditions.

自从广谱化学熏蒸剂甲基溴被淘汰后，土壤传播的病原体如黄萎病的控制已经成为英国园艺业的一个主要问题。以前的一个项目涉及RTO的调查生物熏蒸剂绿色作物作为甲基溴的替代品。种植和掺入生物熏蒸剂作物被证明是困难的，但芸苔种子粉土壤改良剂和熏衣草副产品对草莓黄萎病非常有效。前者中的各种异硫氰酸酯和后者中的单萜类化合物被鉴定为活性化学物质。该项目将利用这一知识开发新的生物熏蒸剂产品，用于控制土传疾病，特别是草莓的黄萎病，但有可能应用于更广泛的作物，包括树莓、马铃薯和棉花。首先，将采用微胶囊技术，开发熏衣草中杀菌萜类化合物的缓释制剂和适合种植者使用的输送系统。其次，将研究生产一种新型的熏衣草废料颗粒制剂的可能性，作为有机种植者的替代品。将在实验室和几个田间地点评价这些和芸苔籽粉产品单独和组合对抗草莓黄萎病的功效。还将确定其对其他土壤传播病原体和非目标生物的影响。该项目将为在不同病原体接种水平和各种土壤水分条件下实际使用这些新产品提供优化策略。