HYDERABAD, April 20: The director-general of the Sindh agriculture extension, Mr Naeem Korejo, has called upon cotton growers to use newly-introduced PB-ROPE-L (sex pheromones) technology for minimising attack of pink bollworm.

He said that the agriculture department would lay down demonstration plots of 100 acres each in cotton-growing district.

Speaking as chief guest at a training seminar, Mr Korejo said that PB-ROPE-L technology had been introduced by the Sumitomo Corporation on an experimental basis first in six districts of Sindh in 2005.

The seminar was organised by the agriculture extension department in collaboration with the Sumitomo Corporation in the auditorium of Sindhi Language Authority on Wednesday.

He said that the technology was alternate source of pesticides and component of IPM under which growers could increase their per acre yield from three to five maunds without using any pesticides.

He said that chemical free perfumed PB-ROPE could easily keep cotton fields free of any disease after 35 to 40 days of sowing which creates disruption in mating processes in between male and female of pink bollworm and control their further generation.