Grabau Zane J, Mauldin Mark D, Habteweld Alemayehu, Carter Ethan T
Entomology and Nematology Department, University of Florida , 1881 Natural Area Drive, Gainesville, FL 32611.
Washington County Extension, University of Florida , 1424 Jackson Ave., Ste A Chipley, FL 32428.
J Nematol. 2020;52:1-10. doi: 10.21307/jofnem-2020-028.
(peanut root-knot nematode (PRKN)) is a major pest of peanut. Nematicide application is an important tool for the management of PRKN. Nematicides with minimal effects on free-living nematodes are desired. Fluopyram nematicide is recently introduced in peanut production and needs to be assessed. The objective of this research is to evaluate fluopyram and the established nematicides 1,3-Dichloropropene (1,3-D) and aldicarb for efficacy at managing PRKN and impacts on free-living nematodes. Nematicides were evaluated in field studies in 2017 and 2018 conducted in commercial peanut fields. All nematicides increased peanut yield in 2017 compared with untreated control, but did not affect soil PRKN abundances or root galling. In 2018, PRKN infestation was too low to accurately assess PRKN management by nematicides. Aldicarb and fluopyram did not affect any free-living nematode trophic group or individual genera. In contrast, 1,3-D decreased total fungivore and fungivore genera and soil abundances, but did not affect bacterivores, omnivore-predators, total herbivores, or any other nematode genera. In summary, 1,3-D, but not aldicarb or fluopyram, had non-target effects on free-living nematodes, particularly fungivores. (peanut root-knot nematode (PRKN)) is a major pest of peanut. Nematicide application is an important tool for the management of PRKN. Nematicides with minimal effects on free-living nematodes are desired. Fluopyram nematicide is recently introduced in peanut production and needs to be assessed. The objective of this research is to evaluate fluopyram and the established nematicides 1,3-Dichloropropene (1,3-D) and aldicarb for efficacy at managing PRKN and impacts on free-living nematodes. Nematicides were evaluated in field studies in 2017 and 2018 conducted in commercial peanut fields. All nematicides increased peanut yield in 2017 compared with untreated control, but did not affect soil PRKN abundances or root galling. In 2018, PRKN infestation was too low to accurately assess PRKN management by nematicides. Aldicarb and fluopyram did not affect any free-living nematode trophic group or individual genera. In contrast, 1,3-D decreased total fungivore and fungivore genera and soil abundances, but did not affect bacterivores, omnivore-predators, total herbivores, or any other nematode genera. In summary, 1,3-D, but not aldicarb or fluopyram, had non-target effects on free-living nematodes, particularly fungivores.
花生根结线虫（PRKN）是花生的主要害虫。施用杀线虫剂是防治花生根结线虫的重要手段。人们期望使用对自由生活线虫影响最小的杀线虫剂。氟吡菌酰胺杀线虫剂最近被引入花生生产中，需要进行评估。本研究的目的是评估氟吡菌酰胺以及已有的杀线虫剂1,3 - 二氯丙烯（1,3 - D）和涕灭威对防治花生根结线虫的效果以及对自由生活线虫的影响。在2017年和2018年于商业花生田进行的田间研究中对杀线虫剂进行了评估。与未处理的对照相比，2017年所有杀线虫剂都提高了花生产量，但对土壤中花生根结线虫的数量或根部的虫瘿没有影响。2018年，花生根结线虫的侵染程度过低，无法准确评估杀线虫剂对其的防治效果。涕灭威和氟吡菌酰胺对任何自由生活线虫的营养类群或单个属都没有影响。相比之下，1,3 - D降低了食真菌线虫的总数和食真菌线虫属以及土壤中的数量，但对食细菌线虫、杂食性捕食线虫、食草线虫总数或任何其他线虫属没有影响。总之，1,3 - D对自由生活线虫，特别是食真菌线虫有非靶标效应，而涕灭威和氟吡菌酰胺则没有。花生根结线虫（PRKN）是花生的主要害虫。施用杀线虫剂是防治花生根结线虫的重要手段。人们期望使用对自由生活线虫影响最小的杀线虫剂。氟吡菌酰胺杀线虫剂最近被引入花生生产中，需要进行评估。本研究的目的是评估氟吡菌酰胺以及已有的杀线虫剂1,3 - 二氯丙烯（1,3 - D）和涕灭威对防治花生根结线虫的效果以及对自由生活线虫的影响。在2017年和2018年于商业花生田进行的田间研究中对杀线虫剂进行了评估。与未处理的对照相比，2017年所有杀线虫剂都提高了花生产量，但对土壤中花生根结线虫的数量或根部的虫瘿没有影响。2018年，花生根结线虫的侵染程度过低，无法准确评估杀线虫剂对其的防治效果。涕灭威和氟吡菌酰胺对任何自由生活线虫的营养类群或单个属都没有影响。相比之下，1,3 - D降低了食真菌线虫的总数和食真菌线虫属以及土壤中的数量，但对食细菌线虫、杂食性捕食线虫、食草线虫总数或任何其他线虫属没有影响。总之，1,3 - D对自由生活线虫，特别是食真菌线虫有非靶标效应，而涕灭威和氟吡菌酰胺则没有。
