Farmed land in 1937 was 14,940,000 acres (60,460 km²), which represented 15.8% of the total Japanese surface area, compared with 10,615,000 acres (42,957 km²) or 40% in Ohio (USA), or 12,881,000 acres (52,128 km²) or 21% in England.
In some parts of southern Japan, the subtropical climate favored a double harvest.