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首页> 外文学位 >Influence of planting date, tillage practice and in-furrow insecticide treatment on corn insects in North Central Mississippi (Delia platura, Blissus leucopterous, Zea mays).
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Influence of planting date, tillage practice and in-furrow insecticide treatment on corn insects in North Central Mississippi (Delia platura, Blissus leucopterous, Zea mays).

机译：种植日期，耕作方式和犁沟内杀虫剂处理对密西西比州中北部（Delia platura，Blissus leucopterous，Zea mays）玉米昆虫的影响。

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摘要

This study was conducted to determine how the manipulation of cultural variables such as planting date and method of tillage influenced insects associated with field corn, Zea mays (L.), production systems in North Central Mississippi in 1996-97. An in-furrow insecticide application was added to each treatment for comparison. Insects found in great enough numbers for analysis included seedcorn maggot, Delia platura (Meigan); corn flea beetle, Chaetocnema pulicaria Melsheimer; chinch bug, Blissus leucopterous leucopterous (Say); corn earworm, Helicoverpa zea (Boddie); fall armyworm, Spodoptera frugiperda (J. E. Smith); insidious flower bug, Orius insidiosus (Say); lady beetles; and spiders.; Seedcorn maggot larvae and corn flea beetle adults were most influenced by planting date and tillage. Both insects were found more frequently on corn in earlier planting dates when compared to later planting dates. Both insects were also found more frequently when plots were hipped in fall and rehipped in spring prior to planting (this system turned under nearly all organic matter on the soil surface) when compared with plots hipped in fall and planted in spring without rehipping (this system left greater than 30% ground cover on the soil surface). Chinch bugs were more numerous on corn in early planting date treatments compared with later planting date treatments in the non-insecticide treatment plots until late in the season, at which time the second generation adults moved to the latest planted corn. Significantly more chinch bugs were found in plots hipped in fall and rehipped in spring. Corn earworm, fall armyworm, insidious flower bug, lady beetles, and spiders were influenced most by planting date. All were found in greater numbers in later corn plantings except the corn earworm, which was found in greater numbers in earlier plantings. There were no significant differences in yield among treatments.
机译：进行这项研究的目的是确定1996-97年中北部密西西比州的耕种日期和耕作方法等文化变量的处理如何影响与田间玉米，玉米（Zea mays（L.））生产系统有关的昆虫。将犁沟杀虫剂添加到每种处理中以进行比较。发现的昆虫数量足以进行分析，包括种子玉米corn，熟食a（Meigan）；玉米跳蚤甲虫，Chaetocnema pulicaria Melsheimer；臭虫，天牛（Blissus）的鳞翅目（Say）；玉米ear，Helicoverpa zea（Boddie）；秋季夜蛾，Spodoptera frugiperda（J. E. Smith）；阴险的花虫Orius insidiosus（说）；瓢虫和蜘蛛。种子corn蝇幼虫和玉米跳蚤甲虫成虫受种植日期和耕作的影响最大。与较晚播种的日期相比，两种昆虫在较早播种的玉米上发现的频率更高。与在秋天不栽种并春季播种的田地相比，在播种前秋天对田进行种田并在春季重新栽种（该系统几乎覆盖了土壤表面的所有有机物）时，两种昆虫的发病率也更高。留在土壤表面的地面覆盖率大于30％）。在非杀虫剂处理地块中，早播期处理的玉米虫数量要比晚播期处理的玉米要多，直到本季节后期，此时第二代成年玉米才移栽到最新播种的玉米上。秋季和春季都被发现的地块中发现了更多的臭虫。种植日期对玉米穗虫，秋天夜蛾，阴险的花虫，瓢虫和蜘蛛的影响最大。除了在早期种植中发现较多的玉米穗虫以外，在后来的玉米种植中发现更多的种子。各处理之间的产量没有显着差异。

著录项

  • 作者

    Catchot, Angus Lynn, Jr.;

  • 作者单位

    Mississippi State University.;

  • 授予单位 Mississippi State University.;
  • 学科 Biology Entomology.; Agriculture Agronomy.
  • 学位 M.S.
  • 年度 1997
  • 页码 75 p.
  • 总页数 75
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 昆虫学;农学（农艺学）;
  • 关键词

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