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Uniform Root Layer Application at Optimal Timing Can Effectively Improve Root-Knot Nematode Disease Control in Rui Yam

文献类型： 外文期刊

作者： Zeng, Rong 1 ; Fang, Wensheng 2 ; Li, Xinshen 1 ; Huang, Shuijin 1 ; Wang, Xi 3 ; Zhou, Qingyou 4 ; Wang, Qiuxia 2 ; Cao, Aocheng 2 ; Sun, Yang 1 ; Hua, Juling 1 ;

作者机构： 1.Jiangxi Acad Agr Sci, Inst Plant Protect, Nanchang 330200, Peoples R China

2.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100193, Peoples R China

3.Jiangxi Agr & Rural Ind Dev Serv Ctr, Nanchang 330096, Peoples R China

4.Ruichang Agr & Rural Bur, Ruichang 332200, Peoples R China

关键词： rui yam; root-knot nematode disease; occurrence pattern; chemical control; optimal period; application techniques

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.408； 五年影响因子：3.459 ）

ISSN：

年卷期： 2022 年 12 卷 12 期

页码：

收录情况： SCI

摘要： Root-knot nematode disease seriously threatens the production of Rui yams, making it important to explore effective management strategies, including the optimal time for disease control and efficient application techniques. In this study, we monitored the dynamics of a root-knot nematode J2 population in the soil using field sampling; moreover, we investigated the dynamics of root-knot nematode disease using a field sampling and visual in situ device based on identifying species of root-knot nematodes in Rui yams. Additionally, experiments pertaining to optimal application time and techniques were conducted in Ruichang and Nanchang. This is the first study to propose that chemical control should be optimally timed, with one application administered at the time of yam seedling flush, and another given approximately 60 days later. Applications of a 41.7% fluopyram suspension (1426 g.a.i./hm(2)) and a 30% fosthiazate microencapsulated suspension (2925 g.a.i./hm(2)) achieved disease control effects of 81.56-83.15% and 75.95-78.42%, respectively. Additionally, the comparative analysis demonstrated that using uniform root layer application technology at the optimal time produces a control effect exceeding 80%, which is significantly higher than conventional techniques such as drip irrigation and root irrigation. These results provide theoretical and technical support for the efficient control of root-knot nematode disease in Rui yams.

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