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Research Detail

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M. H. Rashid
Scientific Officer
RARS, Hathazari, Chittagong

M. A. Mannan
Senior Scientific Officer
RARS, Hathazari, Chittagong

M. S. Uddin
Chief Scientific Officer
RARS, Hathazari,Chittagong

The population dynamics of mustard aphid (L. erysimi kalt.) on 5 genotypes of mustard in relation to weather parameters was studied at RARS, Hathazari, Chittagong. The first aphid infestation was noticed during 1st week of January in 2007. The highest aphid population (161.87/plant) was observed in the 3rd week of January and then declined gradually. The ambient minimum and maximum temperature 12.710C and 25.140C and relative humidity (91.28%) might be favorable for increasing aphid population.

  Population dynamics, Mustard, Aphid,
  RARS, Hathazari, Chittagong
  15-11-2006
  28-02-2007
  Pest Management
  Mustard

1. To determine the population fluctuation pattern of aphid at RARS, Hathazari, Chittagong. 2. To know the relationship aphid population and seasonal variation.

The experiment was conducted at RARS, Hathazari, Chittagong during Rabi, 2006-07 crop season. Five entries of mustard (3 entries of B. campestris and 2 entries of B. juncea ) were sown in RCB design with three replications. No insecticides were sprayed in the plot. Aphid populations were counted (in situ) from 10 randomly selected plants in each replicated plots on 10 cm twigs of the inflorescence on January 03, 2007 to February 14, 2007 at 7 days intervals. The meteorological parameters viz. temperature, relative humidity, and rainfall were also recorded during the study period (November, 2006 to February, 2007).

  Annual Report 2006-2007, Entomology Division, BARI , Gazipur
  
Funding Source:
1.   Budget:  10000.00
   10000.00

The population dynamics of mustard aphid (L. erysimi kalt.) on 5 genotypes of mustard in relation to weather parameters was studied at RARS, Hathazari, Chittagong. The first aphid infestation was noticed during 1st week of January in 2007. The highest aphid population (161.87/plant) was observed in the 3rd week of January and then declined gradually. The ambient minimum and maximum temperature 12.710C and 25.140C and relative humidity (91.28%) might be favorable for increasing aphid population.

  Report/Proceedings
  

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