Vol. 11, Issue 5 (2022)

Author(s):
A Vindhya, Pankaj Neog, Imtinaro L, Susanta Banik and B Malini Sharma

Abstract:
Efficacy of plant powders and vegetable oils against Callosobruchus chinensis (L.) on stored chickpea research work was carried out in the laboratory of Department of Entomology, NU, SASRD. This investigation was done during February 2021 to April 2021. The different plant powders like Pongamia pinnata (Karanja), Murraya koenigii (curry leaves), Ocimum sanctum (tulsi), Syzygium aromaticum (Clove) were used at 5%w/w, while vegetable oils like Sesame oil, Sunflower oil, Groundnut oil, Mustard oil and Castor oil were used at 1%v/w in this investigation. This research also included a chemical check Malathion 5% dust at 1% w/w and untreated plot. The experiment was conducted under Completely Randomized Design with three replication and single factor unit. From the results it evident that 100% reduction in oviposition was observed in the seeds treated with vegetable oils (0.00%), followed by Syzygium aromaticum plant powders while the least reduction of Oviposition was seen in the seeds treated with Murraya koenigii (9.66%). The adult emergence after 5 consecutive days was highest in the seeds treated with Murraya koenigii (3.77%) and no adults emerged when the seeds were treated with vegetable oils (0.00%). The percentage of infestation and percentage of weight loss of chickpea seeds after 60 DAT was found highest in the seeds treated with curry leaf powder (17.04%, 19.6%respectively) while least 0.00% was found in the seeds treated with vegetable oils. When we observe the seed viability of the treated seeds it can be said that all the seeds were viable but highest percentage of germination was found in the seeds treated with Syzygium aromaticum (88%) and least when seeds were treated with castor oil (52%).