A farmer tries to chase away locusts in Pipli Pahar in Pakistan's central Punjab Province on Feb 23. [ARIF ALI/AGENCE FRANCE-PRESSE]
PIPLI PAHAR, Pakistan－Pakistan's farmers are struggling to combat the worst locust plague in nearly three decades as insect swarms decimate entire harvests in the country's agricultural heartlands and send food prices soaring.
Heavy rains and cyclones sparked "unprecedented" breeding and the explosive growth of locust populations on the Arabian Peninsula early last year, the United Nations says.
The insects have since fanned out and wreaked havoc on farms from East Africa to India before making their way into Pakistan from the desert on the country's southwestern border with Iran.
The crisis is so severe that the government has declared a nationwide emergency and appealed for help from the international community.
Officials in southern Sindh Province fear the infestation will devastate the supply of cotton, the local cash crop, ahead of the harvest in the coming months.
Local surveys of the damage are continuing, but the Sindh Chamber of Agriculture says nearly half of all crops have been destroyed near the port city of Karachi.
"I have not seen an infestation like this one in my career," said Shehbaz Akhtar, an agricultural official charged with locust eradication efforts in the village of Pipli Pahar in central Punjab Province.
Local authorities had "launched a combat operation" to clear the area of infestation with pesticide sprays, he said.
Clouds of the noxious gas envelop the nearby fields each morning, where villagers gather the husks of dead insects for an official bounty of 20 rupees (13 cents) per kilogram bag.
"We spray twice a day here," says Fayyaz Azeem, clad in a face mask and thick industrial gloves on top of a tractor discharging pesticide into rows of crops.
But the process is slow, and by the time locusts are killed off in one field they have often already destroyed the next.
Some farmers have been forced to opt for more desperate solutions while waiting for their fields to be sprayed and have attempted to scare off the swarms by shouting and banging pots.
A team of Chinese experts has arrived in Pakistan to survey the crisis, said Muhammad Hashim Popalzai, the chief of the food security ministry.
Beijing could also offer aerial spraying－a much faster and more efficient method of pest control－and Pakistan may import pesticides from China, he added.
