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Vol. 10, Issue 1 (2021)

Susceptibility of selected cereal crops in storage to rice weevil, Sitophilus oryzae (Linnaeus)

Author(s):
AR Bhargude, SK Patil and BV Bhede
Abstract:
The present investigation was conducted on susceptibility of selected cereal crops in storage to rice weevil, Sitophilus oryzae (Linnaeus) under “Free choice” and “No choice” test during Kharif 2019-20. Results revealed that, rice weevil adults oriented towards smaller size seed and highest damage percentage in “free choice” test. In “No choice” test, population of rice weevil increased gradually upto 120 days of released. The maximum population of adult weevils, seed infestation and weight loss was recorded in pearl millet (638.67 adults, 87.00% and 57.26%) and it was less in rice (140.67 adults, 39.33% and 21.79%), respectively. However, the susceptibility of different crops to rice weevil on the basis of population built-up, seed damage and seed weight loss in descending order was pearl millet > wheat > sorghum > maize > barley > rice in no choice test.
Amongst the cereal seeds, there was no any strong relationship recorded with rice weevil population with seed characters and soybean was free from attack of weevil, in free choice test, adult orientation was observed positive correlation with seed damage. In no choice test, population build-up was positive and highly significant correlated with seed infestation (r = 0.949**) and seed weight loss (r = 0.926**). There was positive and highly significant relationship was recorded in between seed infestation and population build-up (r = 0.949**) and seed weight loss (r = 0.992**). It was showed that softer the seed the attack of rice weevil leads to more seed damage and weight loss.
Pages: 570-575  |  353 Views  147 Downloads


The Pharma Innovation Journal
How to cite this article:
AR Bhargude, SK Patil, BV Bhede. Susceptibility of selected cereal crops in storage to rice weevil, Sitophilus oryzae (Linnaeus). Pharma Innovation 2021;10(1):570-575.
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