Guangxi Key Laboratory of Agric-Environment and Agric-Product Safety, Agricultural College, Guangxi University, Nanning, Guangxi, People's Republic of China.
PLoS One. 2020 Jul 6;15(7):e0235423. doi: 10.1371/journal.pone.0235423. eCollection 2020.
The root-knot nematode (Meloidogyne spp.) is one of the major challenges in eggplant (Solanum melongena L.) production. Fluopyram, known to be an effective fungicide, is also used for controlling root-knot nematode. However, in China, little information is currently available regarding the efficacy of fluopyram via chemigation against root-knot nematode and its effects on soil properties. For this, the objective of this work was to test mortality of root-knot nematode, functional diversity of soil microbial community, activity of soil enzyme after fluopyram applicated by chemigation. The results of two field experiments revealed that concentration of 60 g·ha-1 fluopyram applied with 200 L·ha-1 irrigation water at 2 L·h-1 flow velocity was the most effective chemigation parameters for controlling eggplant against root-knot nematode. The functional diversity of the soil microbial community was significantly affected by fluopyram. The activities of soil urease and β-glucosidase decreased during the initial stages but recovered at later stages. In brief, fluopyram has advantageous for the efficient control of root-knot nematode with no deleterious effects on soil properties as well as chemigation is positive for application in karst landscape in Guangxi.
茄科根结线虫（Meloidogyne spp.）是茄子（Solanum melongena L.）生产的主要挑战之一。氟吡菌酰胺作为一种有效的杀菌剂，也被用于防治根结线虫。然而，目前在中国，关于化灌防治根结线虫的氟吡菌酰胺的效果及其对土壤性质的影响的信息很少。因此，本工作的目的是测试根结线虫的死亡率、土壤微生物群落的功能多样性以及土壤酶活性在氟吡菌酰胺化灌后的变化。两项田间试验的结果表明，以 2 L·h-1的流速施用 60 g·ha-1氟吡菌酰胺和 200 L·ha-1灌溉水的浓度是防治茄子根结线虫的最有效化灌参数。氟吡菌酰胺显著影响了土壤微生物群落的功能多样性。土壤脲酶和β-葡萄糖苷酶的活性在初期下降，但在后期恢复。总之，氟吡菌酰胺有利于有效防治根结线虫，对土壤性质没有不良影响，化灌对广西喀斯特地貌的应用具有积极意义。
