Desert Locusts incursion in India

Mains Paper 3 : Conservation, Environmental Pollution & Degradation, Eia |

Note4Students

From UPSC perspective, the following things are important :

Prelims level : Locusts Swarm

Mains level : Pests Management



News

  • Recently Agriculture Minister has informed in Parliament that since May 21, there has been an incursion of desert locusts in Rajasthan and Gujarat from areas bordering Pakistan.
  • Neither the desert locust control teams nor any state agriculture functionaries have reported any damage to the crops.

Locusts

  • Locusts are certain species of short-horned grasshoppers that have a swarming phase.
  • Swarming refers to a collective behaviour in which locusts aggregate together just like flocks of birds.
  • These insects are usually solitary, but under certain circumstances they become more abundant and change their behaviour and habits, becoming grouped.
  • They form bands of wingless nymphs which later become swarms of winged adults.
  • Both the bands and the swarms move around and rapidly strip fields and cause damage to crops.
  • The adults are powerful fliers; they can travel great distances, consuming most of the green vegetation wherever the swarm settles.

Havoc created by locusts

  • Locust swarms devastate crops and cause major agricultural damage and attendant human misery—famine and starvation.
  • They occur in many parts of the world, but today locusts are most destructive in sustenance farming regions of Africa.
  • The desert locust (Schistocerca gregaria) is notorious. Found in Africa, the Middle East, and Asia, they inhabit some 60 countries and can cover one-fifth of Earth’s land surface.
  • Desert locust plagues may threaten the economic livelihood of one-tenth of the world’s humans.

Control measures in India

  • India has a Locust Control and Research scheme that is being implemented through the Locust Warning Organisation (LWO), established in 1939.
  • It was amalgamated in 1946 with the Directorate of Plant Protection Quarantine and Storage (PPQS) of the Ministry of Agriculture.
  • The LWO’s responsibility is monitoring and control of the locust situation in Scheduled Desert Areas mainly in Rajasthan and Gujarat, and partly in Punjab and Haryana.
  • The LWO publishes a fortnightly bulletin on the locust situation.
  • The latest bulletin on the PPQS website, for the second fortnight of June, said control operations had covered 5,551 hectares by June 30.

With inputs from: National Geographic

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