Patiala, Oct. 31 -- As Punjab battles the persistent hazard of stubble burning during the paddy harvest, a growing number of farmers is demonstrating that crop residue is a commercial asset rather than agricultural waste. By combining ex-situ industrial supply chains with in-situ soil incorporation, growers are turning a major driver of seasonal air pollution into a viable business model. Harvinder Singh, 48, a farmer from Bald Khurd village in Sangrur district, has built a thriving allied enterprise around stubble aggregation. Since 2018, he has operated balers to collect straw across the region, supplying pellet manufacturing units and industrial buyers in Amloh, Banur, and Khanna. Harvinder collects approximately 20,000 metric tonnes of paddy straw during the season through his baling business, earning a net annual profit of around Rs.6-8 lakh. "An acre generates around 20 to 25 quintals of paddy straw, which fetches Rs.180 to Rs.185 per quintal. Instead of burning it, farmers can harvest a direct second income," says Harvinder, who cultivates 20 acres and runs the aggregation business with his son. While the initial capital expenditure for balers and specialised implements remains high-with total machinery costs coming to approximately Rs.32 lakh-state support has significantly lowered entry barriers. Harvinder received an 80% government subsidy to set up his baling unit, allowing his venture to pay for itself over time. "Demand from industrial buyers has grown steadily since 2018, and the financial returns are encouraging," Harvinder adds. For other farmers, the financial return comes from lower input costs and healthier soil. Budh Singh, 56, of Dayagarh village in Patiala, has practised in-situ straw management across his 125-acre farm for nearly 18 years. He uses a tractor-drawn mulcher to shred standing stubble before inverting it directly into the soil using a Mouldboard (MB) plough. "Field incorporation costs around Rs.5,000 to Rs.6,000 an acre, but it builds soil organic matter and cuts our chemical fertiliser cost," Budh Singh says. His village has not recorded a single farm fire in four years. Amandeep Singh, 33, from Sultanpur village in Patiala, has implemented this approach on his 40-acre holding, using mulching to boost soil fertility without pest trade-offs. "Farmers often worry that incorporating straw attracts pest attacks on the subsequent wheat crop, but I have seen no such issue in seven years," Amandeep says. He also monetises his machinery by renting his mulcher to neighbouring farmers at Rs.1,000 an acre. After years of incorporating paddy straw directly into their fields, both Budh Singh and Amandeep Singh have successfully reduced their urea and DAP fertiliser consumption by approximately 3-4 bags per season, underlining the long-term agronomic and financial gains of the practice....