Journal of Pharmacognosy and Phytochemistry
Vol. 10, Issue 2 (2021)
Impact of climate change on agriculture and farming tactics to reduce the carbon footprint of crop cultivation in sub-tropical ecosystem: A review
Pradeep Rajput, RK Naresh, RI Navsare, M Sharath Chandra, Gaurav Shukla and Ravindra Kumar Rajput
The human population on the planet is estimated to reach 9 billion by 2050; this requires significant increase of food production to meet the demands. Climate change and agriculture are interrelated processes, both of which take place on a global scale. Climate change affects agriculture in a number of ways, including through changes in average temperature, rainfall, and climate extremes. Climate change associated with rise in concentration of green house gases (CH4, N2O, CO2 and CFC) is likely to affect crop production. Major impact of warmer temperatures was during the reproductive stage of development and in all cases grain yield in maize was significantly reduced by as much as 80-90% from a normal temperature regime. The combined (CO2 and temperature) effects of climate change; it appears that pigeon pea incurring an 8% reduction in potential grain yield, also groundnut can be expected to incurring a 30% reduction compared to current potential, sorghum a 22% reduction and maize a 25% reduction. Farming systems have been identified as a viable means to increase grain production. However, farming intensification requires more inputs such as fertilizers, pesticides,
And fuels; all these emit greenhouse gases and have environmental consequences. we present key farming tactics that are proven to be effective in increasing grain production while lowering carbon footprint using diversified cropping systems can reduce the system’s carbon footprint by 32 to 315 % compared with conventional monoculture systems; improving N fertilizer use efficiency can lower the carbon footprints of field crops as N fertilizer applied to these crops contributed 36 to 52 % of the total emissions; adopting intensified rotation with reduced summer fallow can lower the carbon footprint by as much as 150 %, compared with a system that has high frequency of summer fallow; enhancing soil carbon sequestration can reduce carbon footprint, as the emissions from crop inputs can be partly offset by carbon conversion from atmospheric CO2 into plant biomass and ultimately sequestered into the soil; using reduced tillage in combination with crop residue retention can increase soil organic carbon and reduce carbon footprints; integrating key cropping practices can increase crop yield by 15 to 59 %, reduce emissions by 25 to 50 %, and lower the carbon footprint of cereal crops by 25 to 34 %; and including N2-fixing pulses in rotations can reduce the use of inorganic fertilizer, and lower carbon footprints. With the adoption of these improved farming tactics, one can optimize the system performance while reducing the carbon footprint of crop cultivation.
Pages: 1269-1279 | 637 Views 251 Downloads
Pradeep Rajput, RK Naresh, RI Navsare, M Sharath Chandra, Gaurav Shukla and Ravindra Kumar Rajput. Impact of climate change on agriculture and farming tactics to reduce the carbon footprint of crop cultivation in sub-tropical ecosystem: A review. J Pharmacogn Phytochem 2021;10(2):1269-1279.