EFFECT OF SEX PHEROMONE TRAPS AGAINST CHICKPEA POD BORER, HELICOVERPA ARMIGERA (LEPIDOPTERA: NOCTUIDAE)
KrishiKosh
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Title |
EFFECT OF SEX PHEROMONE TRAPS AGAINST CHICKPEA POD BORER, HELICOVERPA ARMIGERA (LEPIDOPTERA: NOCTUIDAE)
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Creator |
T N, MADHU
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Contributor |
C T, ASHOK KUMAR
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Subject |
pheromones, yields, biological interaction, chickpeas, animal developmental stages, insecticides, land resources, helicoverpa armigera, pesticides, crops
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Description |
Effect of sex pheromone traps against chickpea pod borer H. armigera (Hubner) (Lepidoptera: Noctuidae) were undertaken at ten villages in and around Bangalore rural district during 2013-14. The four different trap densities were evaluated for optimum H. armigera moth catches (i.e., 10, 20, 30 & 40 traps/acre). The results revealed that 20traps/acre recorded maximum moth catches (Overall mean 13.60), minimum larval count (Overall mean 0.81) and least pod damage (Overall mean 6.60%). Studies on the correlation between trap catches and pest infestation revealed that moth catches was significantly influenced by maximum temperature (r=0.538), minimum temperature (0.188) and evaporation (0.072). Rainfall (r=-0.251) and morning relative humidity (r=-0.350) had adverse effect on the activity of moths and on pheromone trap catches. The relationship between moth catches/week, larval count/plant/week was found to be positive at 10 and 40 traps/acre, while it was negative at 20 and 30 traps/acre. Whereas morning relative humidity, afternoon relative humidity and rainfall influence positively and maximum temperature, minimum temperature, evaporation and wind speed negatively influenced on larval count. Pod infestation was positively influenced by maximum temperature and Rainfall. Whereas minimum temperature, morning relative humidity, afternoon relative humidity and wind speed influenced negatively, peak moth catches were recorded during January 3rd week (8.52 moths/trap/week). Four insecticides were evaluated against H. armigera at four locations. Among them, Chlorantraniliprole 18.5SC, Indoxacarb 14.5SC and Novaluron 10EC were found to be superior in reducing the moth catches, larval count and pod infestation when executed with pheromone traps. |
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Date |
2016-10-26T09:03:50Z
2016-10-26T09:03:50Z 2014-07-10 |
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Type |
Thesis
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Identifier |
TH-10785
http://krishikosh.egranth.ac.in/handle/1/81989 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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