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首页> 外文期刊>Plant disease management reports PDMR >Impact of nematicide application timing on root-knot nematode management in Florida bare-ground cucumber, 2018
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Impact of nematicide application timing on root-knot nematode management in Florida bare-ground cucumber, 2018

机译：境外应用时序对佛罗里达野地黄瓜的根结线虫管理对2018年的影响

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摘要

The study was conducted at the North Florida Research and Education Center-Suwannee Valley in Live Oak, Florida on Chipley sand (91% sand, 6.8% silt, 2.4% clay, 3.1% organic matter). The site has a history of vegetable production. The experiment was arandomized complete block design with 6 replicates. Plots consisted of 21 ft. of a single row of cucumbers. Row spacing was 6 ft. Treatments were untreated control, Nimitz or Velum Prime at various timings. Nematicide applications before planting were delivered with a Monosem planter rig not loaded with seed and GPS-guided so seeds could be planted later in the treated area. Nematicide was dispensed via tubes located after the coulter and before the wheel press. At-plant nematicide applications were applied in-furrow using the same rig and cucumbers were planted on 23 Aug. Cucumber stand was counted in 10 ft. of each plot on 6 Sep. Cucumbers were harvested on 15 Oct, sorted into marketable and unmarketable fruit, and weighed. At harvest, percent rootgalling was assessed for 10 plants per plot. Nematode abundances in the soil were assessed before planting (30 Jul) as an average across the trial and at harvest for each plot. Before planting, approximately 20 soil cores were collected to 1 ft. across the trial using an Oakfield tube, and at harvest, 6 cores were collected per plot in a similar manner. Nematodes were extracted from 100 cm3 soil using sucrose-centrifugation, and root-knot nematode juveniles were quantified using a light microscope. Phytotoxicity for all plots except control was rated based on observations throughout the season. Data were statistically analyzed by ANOVA using R version 3.3 and treatment means were separated using Fischer's LSD (P=0.05) when treatment effects were statistically significant (P < 0.05).
机译：该研究在佛罗里达州北佛罗里达州研究和教育中心 - Suwannee谷，佛罗里达州的Chipley Sand（91％Sand，6.8％Silt，2.4％粘土，3.1％有机物质）。该网站有蔬菜生产的历史。实验是arancyomized完整的块设计，6个重复。地块由21英尺组成。一排黄瓜。行间距为6英尺。治疗在各种定时的控制，尼姆兹或柔和素。在种植之前的境外应用程序用未装有种子的单糖粉花架和GPS引导，因此可以在后面的处理区域中种植种子。通过位于Coulter之后的管道和车轮压机前的管子分配了界点。植物界面应用应用于犁沟，使用相同的钻头和黄瓜在8月23日种植黄瓜架在10英尺处于10英尺。每种剧情在6周期6月15日。黄瓜在10月15日收获，分类为可销售和未载数量的水果，并称重。在收获时，每绘地评估百分比的Rootgalling对10株植物进行评估。在种植（30七月）之前将土壤中的Nematode丰度评估为每种曲目的平均水平和收获。在种植之前，将大约20个土壤核心收集到1英尺。使用Oakfield管的试验，并且在收获时，每绘地以类似的方式收集6个核心。使用蔗糖离心从100cm3土壤中提取线虫，并使用光学显微镜定量根结线虫幼瓶。除了控制之外的所有情节的植物毒性是基于整个赛季的观察结果评定。使用R 3.3使用R 3.3的ANOVA进行统计分析数据，并且当治疗效果有统计学意义时，使用Fischer的LSD（P = 0.05）分离治疗方法（P <0.05）。

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  • 来源
    《Plant disease management reports PDMR》 |2019年第2019期|共1页
  • 作者

    Z.J. Grabau; C. Liu;

  • 作者单位

    Entomology and Nematology Department University of Florida Gainesville FL 32611;

    Entomology and Nematology Department University of Florida Gainesville FL 32611;

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  • 正文语种 eng
  • 中图分类 植物学;
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