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

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: Rice

Methane and nitrous oxide are important greenhouse gases. They contribute to global warming. To a large extent, emissions of methane and nitrous oxide are connected with the intensification of food production.

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.