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In-furrow fluopyram nematicide efficacy for Rotylenchulus reniformis management in cotton production
Crop Protection ( IF 2.5 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.cropro.2020.105423
Zane J. Grabau , Chang Liu , Lesley A. Schumacher , Ian M. Small , David L. Wright

Abstract In-furrow nematicide application is a primary method for managing Rotylenchulus reniformis ( Linford and Oliveira, 1940 ) in cotton (Gossypium hirsutum L.). Fluopyram is a relatively new non-fumigant nematicide and field data is needed to determine its efficacy at managing R. reniformis (reniform nematode, RN) in cotton production. To investigate, two experiments, consisting of multiple small plot field trials per experiment, were conducted in Quincy, FL. The first experiment evaluated optimal fluopyram application rate by comparing 0, 105, 131, 158, 184, and 236 g a.i./ha. The second experiment compared aldicarb, a common non-fumigant nematicide in cotton, with two fluopyram formulations, one at 184 g a.i./ha and another at 199 g a.i./ha. Fluopyram provided inconsistent RN management. In the first experiment, fluopyram reduced RN abundances in 2 of 3 trials, and 236 g fluopyram/ha provided the most consistent management of RN soil populations, while 158 and 184 g fluopyram/ha were effective in one trial each. At 131 g a.i./ha or above, any fluopyram rate tested improved cotton yield compared with untreated inone trial, but did not affect yield in any other trial. In the second experiment, aldicarb reduced RN egg abundances in roots compared with untreated or fluopyram treatments. None of the nematicides affected yield in the second experiment. This suggests that fluopyram is inconsistent for managing RN on cotton.

中文翻译:

沟内氟吡菌酰胺杀线虫剂对棉花生产中肾形轮虫的防治效果

摘要 沟内施用杀线虫剂是防治棉花(Gossypium hirsutum L.)中肾形轮虫(Linford and Oliveira,1940)的主要方法。氟吡菌酰胺是一种相对较新的非熏蒸杀线虫剂,需要现场数据来确定其在棉花生产中控制肾形线虫(R. reniform nematode,RN)的功效。为了进行调查,在佛罗里达州昆西进行了两个实验,每个实验由多个小地块田间试验组成。第一个实验通过比较 0、105、131、158、184 和 236 g ai/ha 来评估最佳氟吡菌酰胺施用率。第二个实验比较了涕灭威(一种棉花中常见的非熏蒸杀线虫剂)与两种氟吡菌酰胺制剂,一种为 184 克活性成分/公顷,另一种为 199 克活性成分/公顷。氟吡菌酰胺提供不一致的 RN 管理。在第一个实验中,氟吡菌酰胺在 3 项试验中的 2 项试验中降低了 RN 丰度,236 克氟吡菌酰胺/公顷提供了对 RN 土壤种群最一致的管理,而 158 和 184 克氟吡菌酰胺/公顷在一项试验中均有效。在 131 克活性成分/公顷或更高时,与未处理的一项试验相比,任何氟吡菌酰胺比率测试都提高了棉花产量,但不影响任何其他试验的产量。在第二个实验中,与未处理或氟吡菌酰胺处理相比,涕灭威降低了根中 RN 卵的丰度。在第二个实验中,没有一种杀线虫剂影响产量。这表明氟吡菌酰胺对于管理棉花的 RN 是不一致的。与未处理的一项试验相比,任何氟吡菌酰胺用量测试都提高了棉花产量,但不影响任何其他试验的产量。在第二个实验中,与未处理或氟吡菌酰胺处理相比,涕灭威降低了根中 RN 卵的丰度。在第二个实验中,没有一种杀线虫剂影响产量。这表明氟吡菌酰胺对于管理棉花的 RN 是不一致的。与未经处理的一项试验相比,任何氟吡菌酰胺用量测试都提高了棉花产量,但不影响任何其他试验的产量。在第二个实验中,与未处理或氟吡菌酰胺处理相比,涕灭威降低了根中 RN 卵的丰度。在第二个实验中,没有一种杀线虫剂影响产量。这表明氟吡菌酰胺对于管理棉花的 RN 是不一致的。
更新日期:2021-02-01
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