期刊名称：Liminalities : a Journal of Performance Studies
电子版ISSN：1557-2935
出版年度：2015
卷号：59
语种：English
出版社：Liminalities
摘要：ABSTRACT:A field experiment was conducted to study the seasonal incidence of tobacco capsule borer, Helicoverpa armigera (Hubner) Hardwick on tobacco (seed crop) during rabi 2011-12. Peak incidence of H. armigera eggs was recorded during December second fortnight and incidence of larvae was peak during January first fortnight. During cropping period H. armigera egg load ranged from 0.14 to 1.80 eggs per plant whereas, larvae ranged from 0.18 to 0.52 larvae per plant. Temperature, vapor pressure, relative humidity (r =0.600*) showed the positive correlation with incidence of H. armigera eggs while negative correlation with evaporation (r= -0.656**), bright sunshine, wind speed, morning vapor pressure deficit, evening vapor pressure deficit and mean vapor pressure deficit Whereas morning relative humidity, evening relative humidity and mean relative humidity indicated positive relation with incidence of H. armigera larvae while negative correlation with evaporation (-0.706**), bright sunshine, wind speed, maximum temperature, minimum temperature, mean temperature, morning vapor pressure, evening vapor pressure, mean vapor pressure, morning vapor pressure deficit, evening vapor pressure deficit and mean vapor pressure deficit.KEY WORDS: Seasonal incidence, Tobacco, H.armigera, Meteorological parameters.
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