Journal ID : AMA-01-08-2022-11579
[This article belongs to Volume - 53, Issue - 08]
Total View : 383

Title : Effect of some plant products on the biology of rice weevil Sitophilus oryzae (Linnaeus)

Abstract :

A laboratory study was conducted during 2020-21 in the laboratory of the Department of Entomology, Institute of Agricultural Sciences, SOADU, Bhubaneswar, Odisha, to identify plant powders which may prove effective against rice weevil, via; Azadirachta indica (A. Juss.) seeds and leaves, Pongamia pinnata (Linnaeus), Calotropis procera (Aiton), Annona reticulata (Linnaeus), Lantana camara (Linnaeus), Vitex negundo (Linnaeus) leaves, Capsicum annum (Linnaeus) dried fruits and Curcuma longa (Linnaeus) rhizome at 5% and 10% concentration. This study revealed that the pest could oviposit 3.55 to 24.52 eggs in different treatments. Lowest oviposition (8.06 and 3.55) was there in Neem Seed Kernel (NSK) Powder treatment. Chili powder and Calotropis leaf powder were also effective in reducing egg deposition. The egg to adult period was maximum in NSK Powder (34.5 and 41.3 days) and minimum in Lantana leaf powder recording 24.52 and 19.68 days. Adult emergence% was maximum in Lantana leaf powder (41.94 and 37.12) and minimum in NSK Powder (6.12 and 2.40). Longevity of males was found to be the highest in Lantana leaf powder (21.7 and 16.5 days) and lowest in NSK Powder (2.2 and 1.6 days). Same trend was also found in case of females with 22.2 and 18.9 days in Lantana leaf powder and 2.6 and 2.0 days in case of NSK Powder. Mortality was observed to be the most in NSK Powder ranging between 97.24 and 99.70% and minimum in case of Lantana leaf powder ranging between 23.87 and 46.57%, all at 5% and 10% concentration, respectively.

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