Lisi Global Inc, Richland, WA, USA.
USDA-Agricultural Research Service Horticultural Crops Research Unit, Corvallis, OR, USA.
Pest Manag Sci. 2020 Jun;76(6):2072-2078. doi: 10.1002/ps.5745. Epub 2020 Feb 7.
It is challenging to manage soilborne pathogens and plant-parasitic nematodes using sustainable practices. Here, we evaluated a novel energy application system, Directed Energy System (DES). This system generates pulses of energy capable of impacting selected biological organisms. The oomycete Phytophthora cinnamomi, the fungus Verticillium dahliae, and the plant-parasitic nematodes Meloidogyne hapla and Globodera ellingtonae were added to soil. Then DES-generated energy was applied to soil and impacts on target organisms were determined.
DES applied at 20, 40 and 70 J cm to P. cinnamomi and V. dahliae resulted in ≥50% and 92% reductions (respectively) of propagules per gram of soil in comparison to the untreated control. There was a significant reduction of M. hapla eggs per gram of host tomato root between the untreated control, and 2.2, 13 and 25 J cm DES dosages applied pre- or post-planting. Additionally, an 84% reduction in hatch from G. ellingtonae encysted eggs after treatment with 70 J cm DES was observed. The dosages ranged from 40 or 80V mm for nematodes to 200 V mm for fungi.
DES-generated energy reduced survival of the soilborne pathogens P. cinnamomi and V. dahlia, and the plant-parasitic nematodes M. hapla and G. ellingtonae. The application of this technology to a field setting remains to be considered. Published 2020. This article is a U.S. Government work and is in the public domain in the USA. Pest Management Science published by Wiley Periodicals, Inc. on behalf of © 2020 Society of Chemical Industry.
采用可持续的方法来防治土传病原菌和植物寄生线虫极具挑战性。在这里，我们评估了一种新型能源应用系统，即定向能源系统（DES）。该系统能够产生脉冲能量，对选定的生物有机体产生影响。添加到土壤中的卵菌病原菌肉桂疫霉（Phytophthora cinnamomi）、镰刀菌Verticillium dahliae 以及植物寄生线虫南方根结线虫（Meloidogyne hapla）和马铃薯金线虫（Globodera ellingtonae），然后应用 DES 产生的能量到土壤中，并确定对目标生物的影响。
与未处理的对照相比，DES 以 20、40 和 70 J cm 施加到 P. cinnamomi 和 V. dahliae 上，导致土壤中每个克的繁殖体减少了≥50%和 92%。与未处理的对照相比，在番茄根系中，每克宿主番茄根的 M. hapla 卵的数量在 DES 处理前后分别减少了 2.2、13 和 25 J cm。此外，用 70 J cm DES 处理后，G. ellingtonae 包囊卵的孵化率降低了 84%。剂量范围从线虫的 40 或 80V mm 到真菌的 200V mm。
DES 产生的能量降低了土传病原菌肉桂疫霉和镰刀菌，以及植物寄生线虫南方根结线虫和马铃薯金线虫的存活率。该技术在田间的应用仍有待考虑。2020 年发表。本文是美国政府的一项工作，在美国属于公有领域。由 Wiley Periodicals, Inc. 代表 © 2020 化学工业协会出版的《害虫管理科学》。
