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Sunflower insects and effect of sunflower planting date on sunflower moth in Kansas.

机译：向日葵昆虫和向日葵种植日期对堪萨斯州向日葵蛾的影响。

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摘要

The studies were conducted at Belleville, Hays, Hesston, Hutchinson, and Manhattan, Kansas during 1986-1988 to evaluate planting data and insecticide effects on sunflower moth damage. The number of sunflower moth, Homoeosoma electellum (Hulst), larvae/head and percent head damage was higher with early (mid-May or early June) than late (early July) plantings. Based on the number of larvae/head early July plantings resulted in less infestations at Hesston, Hutchinson, and Manhattan. At Belleville and Hays planting after the second week of June resulted in less damage by the moth.;Maximum number of moths were trapped in pheromone traps from mid July to mid August at most locations. Pheromone traps proved to be an efficient tool to detect the presence of moths in the field. A significant relationship was found between number of moths in traps and larvae/head. Other insect pests recorded were sunflower seed weevil, Smicronyx fulvus LeConte and S. sordidus Leconte, banded sunflower moth, Cochylis hospes Walsingham, sunflower midge, Contorinia schulzi Gagne, woollybear, Siplosoma virginica (Fab.), painted lady, Cynthia cardui L., carrot beetle, Bothynus gibbosus (De Geer), sunflower beetle, Zygogramma exclamationis (Fab.), sunflower head-clipper weevil, Haplorhynchites aeneus (Boheman), and Euphorea sepueralis (Fab.). Banded sunflower moth and sunflower seed weevils may become important pests in the state because an increase in their populations was noted over three years.;When insecticides were applied, treated plots had significantly less larvae/head in June but not in July plantings. Yield loss was 9.9 Kgs/ha with one larva/head. Planting sunflowers and treating for sunflower moth control during first week of June at Manhattan and Belleville, the second to third week of June at Hesston, and the first week of July at Hutchinson will result in the highest net return. If no insecticide was applied, the maximum net return was obtained by planting during the second or third week of June at Belleville, Hesston, and Manhattan and the first week of July at Hutchinson.
机译：这项研究是在1986-1988年间在贝尔维尔，海斯，赫斯顿，哈钦森和堪萨斯州曼哈顿进行的，以评估种植数据和杀虫剂对葵花蛾危害的影响。早期（5月中旬或6月初）播种的向日葵蛾，Homoeosoma electroellum（幼虫），幼虫/头部和头部的百分率高于后期（7月初）。根据幼虫/头的数量，7月初的播种减少了在Hesston，Hutchinson和Manhattan的侵扰。 6月第二周之后在贝勒维尔（Belleville）和海斯（Hays）的种植减少了对蛾的危害。从7月中旬到8月中旬，大多数地方在信息素诱捕器中捕集了最多的蛾。信息素陷阱被证明是检测野外飞蛾存在的有效工具。发现陷阱中的飞蛾数量与幼虫/头部之间存在显着的关系。记录的其他害虫是向日葵种子象鼻虫，Smicronyx fulvus LeConte和S. sordidus Leconte，带状向日葵蛾，Cochylis hospes Walsingham，向日葵mid，Contorinia schulzi Gagne，羊毛ly，Siplosoma virginica（Fab。），彩绘女士，Cynthia cardui L.胡萝卜甲虫，Bothynus gibbosus（De Geer），向日葵甲虫，Zygogramma exclamationis（Fab。），向日葵头夹象鼻虫，Haplorhynchites aeneus（Boheman）和Euphorea sepueralis（Fab。）。带状向日葵蛾和向日葵种子象鼻虫可能成为该州的重要害虫，因为三年来注意到它们的种群增加。当施用杀虫剂时，处理过的地块的幼虫/头数在6月显着减少，但7月播种却没有。一个幼虫/头的产量损失为9.9 Kgs / ha。在6月的第一周，在曼哈顿和贝勒维尔，在6月的第二至第三周，在Hesston，在7月的第一周，在Hutchinson种植向日葵并进行向日葵防蛀处理，将获得最高的净收益。如果不使用杀虫剂，则在6月的第二个或第三个星期在贝尔维尔，赫斯顿和曼哈顿种植，在7月的第一个星期在哈钦森种植，可获得最大的净回报。

著录项

  • 作者

    Aslam, Muhammad.;

  • 作者单位

    Kansas State University.;

  • 授予单位 Kansas State University.;
  • 学科 Agriculture Agronomy.;Biology Entomology.
  • 学位 Ph.D.
  • 年度 1990
  • 页码 138 p.
  • 总页数 138
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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