Breiing Vera, Hillmer Jennifer, Schmidt Christina, Petry Michael, Behrends Brigitte, Steiner Ulrike, Kraska Thorsten, Pude Ralf
Institute of Crop Science and Resource Conservation, Faculty of Agriculture, INRES-Renewable Resources, University of Bonn, 53359 Rheinbach, Germany.
PETRYmade Oberflächentechnik, 53340 Meckenheim, Germany.
Plants (Basel). 2021 Jan 12;10(1):143. doi: 10.3390/plants10010143.
As biorationals, plant oils offer numerous advantages such as being natural products, with low ecotoxicological side effects, and high biodegradability. In particular, drying glyceride plant oils, which are rich in unsaturated fatty acids, might be promising candidates for a more sustainable approach in the discussion about plant protection and the environment. Based on this, we tested the protective and curative efficacy of an oil-in-water-emulsion preparation using drying plant oils (linseed oil, tung oil) and a semi-drying plant oil (rapeseed oil) separately and in different mixtures. Plant oils were tested in greenhouse experiments (in vivo) on green beans ( L.) against bean rust (). We observed that a 2% oil concentration showed no or very low phytotoxic effects on green beans. Both tested drying oils showed a protective control ranging from 53-100% for linseed oil and 32-100% for tung oil. Longer time intervals of 6 days before inoculation (6dbi) were less effective than shorter intervals of 2dbi. Curative efficacies were lower with a maximum of 51% for both oils when applied 4 days past inoculation (4dpi) with the fungus. Furthermore, the results showed no systemic effects. These results underline the potential of drying plant oils as biorationals in sustainable plant protection strategies.
作为生物源农药，植物油具有诸多优势，比如它们是天然产物，具有低生态毒理学副作用且生物降解性高。特别是富含不饱和脂肪酸的干性甘油酯植物油，在关于植物保护和环境的讨论中，可能是更具可持续性方法的有前景的候选物。基于此，我们分别测试了使用干性植物油（亚麻籽油、桐油）和半干性植物油（菜籽油）以及不同混合物的水包油乳液制剂的保护和治疗效果。植物油在温室实验（体内）中针对菜豆（L.）上的菜豆锈病（）进行了测试。我们观察到2%的油浓度对菜豆没有或只有非常低的植物毒性作用。两种测试的干性油显示出的保护防治效果为：亚麻籽油为53 - 100%，桐油为32 - 100%。接种前6天（6dbi）的较长时间间隔不如2天（2dbi）的较短时间间隔有效。在接种真菌后4天（4dpi）施用时，两种油的治疗效果较低，最高为51%。此外，结果显示没有系统作用。这些结果强调了干性植物油作为生物源农药在可持续植物保护策略中的潜力。
