This all depends on location, precipitation received, time of year, etc. There is no standard number for all parts of the world or the country for how much forage is produced per acre.
one ton of sunflower seeds can be produced from a one acre land.
70
~25
On average 3,120 lbs per acre or 1.56 tons
The average amount of sugar cane produced by one acre of land is 37 tons in Louisiana. This varies greatly with weather conditions and climate.
It depends on the size and weight of the tree(s).
3- 5 per acre per year. Average production of hay is 2- 3 tons per growing season in the U.S. midwest. Average weight of a round bale is 1200 pounds or 0.6 tons. Lots of variables here including length of growing season, rainfall, type of hay produced, and bale size.
6,769,000 tons in 2009.
water from the soil and and carbon dioxide from the air.
Depends on a lot of factors- but the average yield of well cultivated corn is 160 bushels per acre. A bushel of shelled, dried corn is 56 lbs. That is 8960 pounds, or about 4.48 tons.
1.1 billion tons per year
The average yield for the period 2000 through 2009 crop years was 21.5 tons per acre, ranging from a low of 18.1 tons per acre in 2001 to a high of 25.9 tons per acre in 2008.