section_path: Production
section_name: Production
paragraph_text: Production
  
  In 2021, world production of potatoes was 376 million tonnes (370,000,000 long tons; 414,000,000 short tons), led by China with 25% of the total. Other major producers were India and Ukraine (table).
  
  The world dedicated 18.6 million hectares (46 million acres) to potato cultivation in 2010; the world average yield was 17.4 tonnes per hectare (7.8 short tons per acre). The United States was the most productive country, with a nationwide average yield of 44.3 tonnes per hectare (19.8 short tons per acre).
  
  New Zealand farmers have demonstrated some of the best commercial yields in the world, ranging between 60 and 80 tonnes per hectare, some reporting yields of 88 tonnes of potatoes per hectare.
  
  There is a big gap among various countries between high and low yields, even with the same variety of potato. Average potato yields in developed economies ranges between 38 and 44 metric tons per hectare (15 and 18 long ton/acre; 17 and 20 short ton/acre). China and India accounted for over a third of world's production in 2010, and had yields of 14.7 and 19.9 metric tons per hectare (5.9 and 7.9 long ton/acre; 6.6 and 8.9 short ton/acre) respectively. The yield gap between farms in developing economies and developed economies represents an opportunity loss of over 400 million metric tons (440 million short tons; 390 million long tons) of potato, or an amount greater than 2010 world potato production. Potato crop yields are determined by factors such as the crop breed, seed age and quality, crop management practices and the plant environment. Improvements in one or more of these yield determinants, and a closure of the yield gap, could be a major boost to food supply and farmer incomes in the developing world. The food energy yield of potatoes—about 95 gigajoules per hectare (9.2 million kilocalories per acre) —is higher than that of maize (78 GJ/ha or 7.5 million kcal/acre), rice (77 GJ/ha or 7.4 million kcal/acre), wheat (31 GJ/ha or 3 million kcal/acre), or soybeans (29 GJ/ha or 2.8 million kcal/acre).