STUDY OF LARVAL PARASITOID (CAMPOLETIS CHLORIDEAE UCHIDA) PARASITIZE TO GRAM POD BORER (HELICOVERPA ARMIGERA HUB.) ON CHICKPEAS (CICER ARIETINUM LINN.) CROP
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 11
Abstract
The experiment was conducted during the rabi season of 2012-13 at live stock farm, Adhartal, JNKVV, Jabalpur (MP) variety i.e. JG-315 plot size 5x3 sq. m. and replication 3 times. The pod borer Helicoverpa armigera is the most serious insect pest in the most of the chickpea growing areas of the country. Study the parasitization (%) of H. armigera by Campoletis chlorideae Uchida in the laboratory. The observation of natural enemies (C. chlorideae) were also recorded by collecting the larvae from one meter row length and reared in the laboratory. The numbers of healthy and parasitized larvae were recorded and calculate the per cent parasitization of H. armigera larvae under field condition. Second instar larvae of H. armigera were collected from the untreated chickpea plot and put separately into the Petridis. Fresh leaves were provided daily and counted the parasitized larvae. No. of H. armigera larvae were changed weekly and parasitization (%) per week were calculated. Only one species of parasitoid C.chlorideae, (Hymenoptera: Ichneumonidae) was observed parasitizing early in star larvae of H. armigera on chickpea under field conditions. The per cent parasitization of H. armigera by C. chlorideae was observed ranging from 10% to 35% during the period of investigation. In the 1st SW, (first week of January 2013) 20% parasitization was observed, when the maximum and minimum temperature was (25.3°C& 7.1°C) respectively, and morning & evening relative humidity was (88% & 29%) respectively. The peak per cent parasitization (35 %) was observed in the 52nd SW, fifth week of December when the maximum and minimum temperature was (23.80C & 5.0°C) respectively, and morning & evening relative humidity was (90% & 30%) respectively and there was no rainfall. Then after the per cent parasitization was decreased in the 1st and 2nd SW, (20% & 13.33%) respectively. It was observed when the maximum and minimum temperature showed decreasing trend and morning & evening relative humidity also showed decreasing trend.
Authors and Affiliations
JAGDISH BARASKAR
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