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首页> 外文期刊>African Journal of Biotechnology >Studies of occurrence of pod borer Heliothis viriplaca in relation to the phenology of chickpea in rain-fed chickpea fields in Kermanshah region of Iran
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Studies of occurrence of pod borer Heliothis viriplaca in relation to the phenology of chickpea in rain-fed chickpea fields in Kermanshah region of Iran

机译：伊朗克尔曼沙什地区雨养鹰嘴豆田中豆荚bore的发生与鹰嘴豆物候相关的研究

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摘要

In order to determine the seasonal occurrence of?Heliothis viriplaca?as well as the best timing of sprays in relation to the phenology of chickpea, light-traps and monitoring methods were applied. All experiments were conducted in two research stations (Mahidasht and Sararood) in 2003 and 2004. The results of adult moths caught by light-traps showed that this pest has only one generation per year and the maximum adult population density appears in the field from end May until early June. The results show that the population density of?H. viriplaca?was 95% while population density of?Helicoverpa armigera?and?Helicoverpa?peltigera?were 2 and 3%, respectively. A comparison of the flight peak, the peak of pod borer oviposition, peak of activity of larvae populations and the phenology of plant showed that a period of 13 to 15 days after the flight peak of?H. viriplaca?was most appropriate for chemical control.?This time period coincided with 50% of plant flowering.?The field experiments showed that fully grown larvae of?H. viriplaca?were parasitized by the?Habrobracon hebetor, but in this time, most of the larvae had bored the pod of chickpea so this parasitic wasp is likely not to be an adequate agent for pest control.
机译：为了确定“ Heliothis viriplaca”的季节性发生以及与鹰嘴豆的物候有关的最佳喷洒时间，采用了光诱和监测方法。所有实验均于2003年和2004年在两个研究站（Mahidasht和Sararood）中进行。用光阱捕获的成年蛾的结果表明，该害虫每年只有一代，并且最大的成虫种群密度出现在田间。五月至六月初。结果表明，人口密度为？H。 viriplaca为95％，而棉铃虫（Helicoverpa armigera）和小鳞螺（Helicoverpa-peltigera）的人口密度分别为2％和3％。通过比较飞行高峰，豆荚虫卵产卵高峰，幼虫种群活动高峰和植物物候，可以看出ΔH飞行高峰期为13至15天。 viriplaca？最适合化学防治。这段时间恰好有50％的植物开花。 viriplaca？被Hebrobracon hebetor寄生了，但是在这段时间里，大多数幼虫已经使鹰嘴豆荚感到厌烦，因此这种寄生黄蜂可能不是控制害虫的合适药剂。

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