Retrospection of Outbreaks of Spodoptera mauritia Boisduval in NER India: The Solution Lies in Ecological Engineering, Not in Insecticides

Arup Kumar Sarma*, Christian Damgaard, Prasanta Neog

*Corresponding author for this work

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperReviewResearchpeer-review

    Abstract

    Rice cultivation in North East India is organic by tradition; however, the recent outbreaks of the rice-swarming caterpillar, Spodoptera mauritia Boisduval, have compelled rice-farmers to use synthetic insecticides. The outbreak in 2016 affected more than 56,768 ha of winter rice in 28 dis-tricts of Assam. About 25,545–42,576 L insecticide was applied in the state to combat the outbreak. This is one of the highest insecticide loads ever to be added to the rice ecosystem of Assam. Such a load, if added repeatedly with the reoccurrence of outbreaks, may affect the innate resilience of the rice ecosystem in the long run. In this paper, the outbreak of RSC has been analysed from an ecological perspective in order to replace the existing policy of exclusive dependence on insecticide. The review will help the researchers, extension workers and policy makers of the rice producing countries, more specifically in Asian countries, which together account for more than 91% of the world’s rice production.

    Original languageEnglish
    Article number12824
    JournalSustainability
    Volume13
    Issue22
    ISSN2071-1050
    DOIs
    Publication statusPublished - Nov 2021

    Keywords

    • Ecological engineering
    • Outbreak
    • Resilience
    • Rice swarming caterpillar
    • Spodoptera mauritia

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