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首页> 外文期刊>Journal of Economic Entomology >Mexican rice borer (Lepidoptera: Crambidae) injury to corn greater than to sorghum and sugarcane under field conditions
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Mexican rice borer (Lepidoptera: Crambidae) injury to corn greater than to sorghum and sugarcane under field conditions

机译：在田间条件下，墨西哥rice虫（鳞翅目：:科）对玉米的伤害大于对高粱和甘蔗的伤害

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摘要

The Mexican rice borer, Eoreuma loflini (Dyar) (Lepidoptera: Crambidae), is the key pest of sugarcane (Saccharum spp.) in Texas; it can attack several grassy crop and noncrop host plants and has spread into Louisiana. Through small-plot, commercial field, and pheromone trap experiments, this study demonstrates that the pest uses corn, Zea mays L., more than sugarcane and sorghum, Sorghum bicolor (L.) Moench, but when corn is harvested in late summer, injury to nearby sugarcane strongly increases during the next ≈2 mo to harvest. Corn was more infested than sugarcane and sorghum in commercial fields regardless of whether sampling occurred on field edges or farther into field interiors. Differences in numbers of infested stalks and in numbers of larval entry holes between field edges and interiors were not detected. We found that Mexican rice borer infestation of corn can cause loss of ears, and lodging, shattering, and complete destruction of maturing stalks. The larger quantities of adult Mexican rice borers captured in pheromone-based traps placed at corn field edges compared with sorghum and sugarcane field edges further indicates that corn is preferred to sugarcane and sorghum. The basis for the pest's attraction to corn and implications to potential range expansion to other U.S. sugarcane-growing regions are discussed.
机译：墨西哥稻r Eoreuma loflini（Dyar）（鳞翅目：Crambidae）是德克萨斯州甘蔗（Saccharum spp。）的主要害虫。它可以攻击几种草类作物和非作物寄主植物，并已扩散到路易斯安那州。通过小规模的商业田间试验和信息素诱捕实验，该研究表明，该害虫使用玉米，玉米，而不是甘蔗和高粱，高粱双色玉米，但是当夏末收获玉米时，在接下来的≈2个月收获期间，对附近甘蔗的伤害会大大增加。不论是在田间边缘采集还是在田间内部采集，玉米在商业领域中的侵染都比甘蔗和高粱高。未检测到田间边缘和内部之间的侵染茎杆数量和幼虫进入孔数量的差异。我们发现墨西哥大米r虫对玉米的侵染会导致耳朵丧失，倒伏，破碎并完全破坏成熟的茎。与高粱和甘蔗田边缘相比，被放置在玉米田边缘的基于信息素的诱捕器捕获的成年墨西哥Mexican虫数量更多，这进一步表明玉米比甘蔗和高粱更受欢迎。讨论了害虫吸引玉米的基础以及对美国其他甘蔗种植区潜在范围扩大的影响。

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