Carbon footprint reduction in Punjab agriculture: Analyzing impacts and strategies in major crop rotations

This research aimed to evaluate the carbon footprints in Punjab's agriculture, focusing on crop production and its mitigation strategies. Utilizing both primary and secondary data, the study sampled 120 farmers from two Punjab districts, Mansa and Sri Muktsar Sahib, through a multi-stage sampling technique. The sample was equally divided between farmers practicing paddy-wheat and cotton-wheat crop rotations. Secondary data, including emission factors for various agricultural inputs, were compiled from published sources. The study further categorized Resource Conservation Technology (RCT) adopters into specific scenarios for both crop sequences. The study reveals that emissions from paddy-wheat crop rotation (14,176 176 ± 3027 kg CO₂eq/ha) are 3.5 times higher than that of cotton-wheat crop rotation. RCTs showed the significance reduction in carbon emissions in case of both crop rotations ranging from 0.5 to 194 % The findings also reveal that paddy cultivation is the principal carbon emitter, with emissions five times higher than wheat and cotton. The carbon footprint resulting from paddy residue burning was found to be 6997 ± 1660 kg CO₂eq/ha, significantly reduced by 95 % to 161 - 311 kg CO₂eq/ha in farmers adopting CRM techniques. Methane emissions from P_PTR farms were significant (1747 ± 843 kg CO₂eq/ha), constituting 16 % of total GHG emissions, whereas DSR farms showed no methane emissions. Adoption of C_IPM+W_CT leads to reduction in carbon emissions from insecticides by 23 % than C_CT+W_CT. The study advocates for financial incentives to motivate farmers towards adopting RCTs and ensuring timely availability of machinery for crop residue management and no-till practices for effective carbon footprint reduction. These findings highlight the critical need for integrated strategies involving technology adoption, efficient management practices, and policy interventions to achieve sustainable agricultural development and significantly reduce carbon emissions in Punjab's agriculture.