Sugarcane is grown on about 90% of the cultivated land area and accounts for 15% of export earnings.
The ADB's figure for farming is not much higher, with only about 6% of Africa's cultivated land under irrigation.
Three-quarters of cultivated land is unirrigated and dependent on the monsoon whose lavishness last summer is a big factor in the booming year that has followed.
Others invest foolishly or spend frivolously, but capitalism has cultivated a land of plenty.
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The huge industrial estates just north of Bangkok sit on land that was once heavily cultivated for rice, precisely because the land floods regularly.
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The agricultural sector has untapped potential - less than half of arable land is cultivated.
The new law still treats long-cultivated and recently cleared land in the same way.
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But the professor dismisses this, saying most of the arable land is cultivated already, while the rest supports indigenous woodland that is used for grazing cattle, or for wildlife, or both.
Congress finally acknowledged defeat in 1862 with the passage of the Homestead Act, which gave settlers free federal land if they cultivated it for five years.
So producing the world's current agricultural output organically would require several times as much land as is currently cultivated.
They calculated that the "ecological footprint" of the final was 3, 051 football pitches - which relates to the amount of land that would have to be cultivated to match the amount of energy used on the day.
On the other hand it is certainly true that the theatres were protected against the leaders of the City of London, who heartily detested them, by some of the most cultivated and high-born figures in the land, including the Earls of Pembroke and Leicester (also a pupil of Dee), Philip Sidney and Queen Elizabeth herself.
Since the black wheat can be cultivated between regular rice harvests, it helps the farmers use their land better.
The land was simply part of a field that their family had cultivated for generations.
Some token efforts were made to change this regime in the 1980s, and then in 1996 a decree was issued requiring 80% of each plot of land to be preserved as forest, with only 20% to be cultivated or ranched.
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