Question

Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide ?

• A. Cotton
• B. Rice
• C. Sugarcane
• D. Wheat

Answer 1

Answer:

B. Rice

Important anthropogenic sources of biogenic methane are wet rice fields, cattle, animal waste, landfills and biomass burning. Important anthropogenic sources of biogenic nitrous oxide are land-use change, fertilizer production and use and manure application.