Michigan has the third largest floriculture industry in the United States, with the production of daylily ( spp.) a top commodity. Daylily is one of the most economically important ornamental plants, yet their production is plagued by plant-parasitic nematodes, especially the northern root-knot nematode, . Seven treatments in combination with a high-carbon, cow manure compost were selected for a three-year field trial at a commercial nursery in Zeeland, MI to discern the best management strategies in daylily field production for its entire production cycle. Treatments included the compost manure by itself, Indemnify as a soil drench and as a pre-plant dip both together and separately, AzaGuard, TerraClean 5.0, and an untreated control. Additionally, a similar multi-year greenhouse trial was conducted and included a new treatment: Majestene 304. Results showed that the high-carbon, cow manure compost + Indemnify as a soil drench by itself and in combination as a pre-plant dip were the most effective treatments in reducing population levels; in the greenhouse experiment, Indemnify reduced population levels by 83%. Majestene 304 provided the next best control of yet it had the highest gall ratings; the compost by itself was not effective, having higher populations than the control in both experiments. Lastly, both trials emphasize the importance of applying these management strategies every year for the best management. These results give the ornamental plant industry new, effective management systems to control in ornamental plant field production.

中文翻译：

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黄花菜（Hemerocallis spp.）观赏植物生产田中北方根结线虫（Meloidogyne hapla Chitwood Tylenchida：Heteroderidae）的新管理系统


密歇根州拥有美国第三大花卉产业，黄花菜的生产是顶级商品。黄花菜是经济上最重要的观赏植物之一，但其生产却受到植物寄生线虫，尤其是北方根结线虫的困扰。选择七种处理方法与高碳牛粪堆肥相结合，在密歇根州泽兰的一个商业苗圃进行为期三年的田间试验，以找出黄花菜田间生产整个生产周期的最佳管理策略。处理方法包括堆肥肥料本身、作为土壤浇灌的 Indemnify 以及作为一起和单独的种植前浸泡、AzaGuard、TerraClean 5.0 和未经处理的对照。此外，还进行了一项类似的多年温室试验，其中包括一种新的处理方法：Majestene 304。结果表明，高碳牛粪堆肥 + Indemnify 本身作为土壤淋水以及结合作为种植前浸水是最有效的。减少人口数量的最有效治疗方法；在温室实验中，Indemnify 使种群数量减少了 83%。 Majestene 304 提供了次佳的控制能力，但其胆汁评级却最高；堆肥本身并不有效，在两个实验中堆肥的数量均高于对照。最后，这两项试验都强调了每年应用这些管理策略以获得最佳管理的重要性。这些结果为观赏植物行业提供了新的、有效的管理系统来控制观赏植物田间生产。