Ludhiana, October 23
Spurred by large-scale environmental pollution caused by the burning of paddy stubble by farmers across the state, field staff at Punjab Agricultural University (PAU) demonstrated ways to deal with the stubble which has to be disposed of before the rabi sowing begins. Hundreds of farmers thronged the venue and evinced keen interest in the tractor driven chopper, developed by the Department of Farm Power and Machinery, which spreads the stubble evenly across the field making it easy for the farmers to dispose of the organic matter.
Paddy is cultivated on about 2. 4 million hectares in the state. Since more than 70 to 80 per cent of the crop is harvested by combines, farmers were commonly using disc harrows and rotavators to prepare the field for sowing, which were not very efficient. Hence, entire tracts of land were set on fire since this method was simple and inexpensive.
Talking to TNS, Dr Kirpal Singh Aulakh, Vice-Chancellor, said at present, three-fourths of the straw, amounting to about 19. 6 million tonnes, was burnt every year. The magnitude of the problem was reflected in a dense smog which enveloped the state, hampering vital operations. Due to the burning, more than 38. 5 lakh tonnes of organic carbon, 59, 000 tonnes of nitrogen, 2,000 tones of phosphorous and 34,000 tonnes of potassium were lost, he revealed.
He later interacted with the farmers and listened to their problems.
Mr I.K. Garg, head of the department, said: “Farmers are in a fix on how to get rid of the stubble and then prepare the field at a minimum cost. The department has done pioneering work in this direction and new machines have been developed to reduce the costs. Equipment for sowing wheat under minimum tillage and no-tillage saves substantial cost in comparison to traditional methods. Demonstration of these machines will be given,” he added.
Elaborating o the use of the straw chopper, he said: “The machine disperses the stubble evenly across the field in a single operation, following which the field can be ploughed, watered and the straw left to decompose till sowing time. This will help in maintaining the essential nutrients of the soil, besides curbing the pollution caused by burning.”
The machine was a boon for the farmers since it would deal with the burning problem and add to the fertility of the soil. The machine costed about Rs 35,000 and covered eight to 10 acres a day using a 40 horsepower tractor. Trials were on to further simplify the machine and bring down the cost to Rs 25,000. This was the only machine in the country to successfully tackle the problem, he claimed.
Trails were under way in fields in the state and farmers’ suggestions were being considered to make the machine more efficient. We appeal to the farmers to use the machine in larger numbers, he added.
During the trials scientists displayed eco-friendly technologies that not only help to save environmental pollution but will also reduce the consumption of precious farm inputs like fuel, water, fertilisers and pesticides. The department has recently developed self-propelled sprayers which can be used for spraying rabi crops and vegetables. It not only helps in efficient use of chemicals and insecticides but also assists in uniform spraying, they pointed out.
Besides, various improved farm equipment like ratavator were also demonstrated.