Authorities have cleared locusts from about 50,468 hectares (124,709 acres) in several states, including Rajasthan, Madhya Pradesh, Gujarat, Punjab and Maharashtra, according to the federal agriculture ministry.
While officials in the affected states are working on measures to control locust swarms, the federal government is arranging drones to sprinkle pesticides on trees and inaccessible places to kill the insects.
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Normally, with the arrival of the monsoon, locust swarms enter the desert areas of India via Pakistan for breeding in June-July, but this year pink adult swarms were reported as early as April 30 in Rajasthan and Punjab.
There are some active swarms of immature locusts in some parts of Rajasthan, Uttar Pradesh, Madhya Pradesh and Maharashtra.