We already handled far more than our share, and had less than one tree per acre.
Crop production is consistently setting records for overall yield and yield per acre.
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In a busy cicada area, it's estimated there are one-and-a-half million cicada nymphs per acre.
The biggest so far is Hildebrando Pascoal, a deputy for the Amazonian state of Acre.
The median-sized house in America is 2, 200 square feet, with 3-bedrooms, 2-baths, freestanding on one quarter acre.
Upping the sugar content in the cane would lead to a higher yield of ethanol per acre.
It has a proposed wingspan of 500 feet and a wing area that is more than an acre.
Scientists developed new seed varieties and fertilizers that produced more food per acre.
Goal: a minimum of two sorghum harvests per year on every acre.
Halfway through this year, the ratio was just 1.6 ounces per acre.
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He also ordered the transfer of a retired police colonel, allegedly a professional assassin, to a prison in the Amazon state of Acre.
It turned what was once a subsistence crop into a major income earner for women farmers, more than doubling average banana harvests to 20 tons per acre.
Zimbabwe's state-controlled media has also covered the funeral in huge detail and used the sort of tone previously reserved for those interred at Heroes' Acre.
Development is encroaching, and zoning laws allow one house per acre.
Shortly after winning independence, Congress enacted legislation that called for newly acquired western lands to be divided into large 640-acre plots and sold for a dollar an acre.
To get the seeds to breed true the farmers have to cross-pollinate the plants, a laborious task that keeps a peak of a dozen workers busy for several months on just one acre.
Mr Annan said there had been 30 years of silent hunger in Africa, where farmers exported food in the late 1960s but now only produced a quarter of the world average per acre.
Not surprisingly, however, a Grenache vineyard that will produce dense, tongue-blackening wine when pruned back to yield 3 or 4 tons per acre makes pale, character-free, generic plonk at 10 or 12 tons per acre.
Then another barbed wire fence had to be put around the first barbed wire fence, and then a third barbed wire fence had to be put around the second till the whole compound covered a half acre.
For example, rice yield per acre on average is 1.3 tons versus 2.5 tons per acre in China.
The Massachusetts native also created a Boston Celtics-themed basketball court on the 1.7-acre property.
The developers refurbished the Midland Hotel in 2008 which is close to the 18.5 acre (7.5 hectare) site.
The 25.5 acre (10.3 hectare) Neatishead base, near Wroxham, includes a high-security fence, a Cold War underground bunker and a helipad.
The US aircraft carrier Theodore Roosevelt is nothing short of a floating airport, capable of launching four war planes every minute from its 4.5 acre flight deck.
The 8, 000 employees at its headquarters in Thousand Oaks, Calif. need a shuttle bus to traverse its 194-acre campus.
The 3.4-acre (1.4 hectare) site will include interview rooms, evidence gathering rooms and offices.
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The 25 acre woodland area and 2.5 acre block of trees will be sprayed twice in a two-week period.
Their goal: crops that limit the use of pesticides and fertilizers while delivering more food per acre planted.
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