It was a unit of land tenure.
(A sim is the unit of land on Second Life).
(One cuerda, a unit of land measurement used on the island, equals 0.989 acres).
Both productivity per worker and yields per unit of land are low.
The extended family household probably functioned as a unit of land use and food production.
They simply collect a fixed amount based on a particular unit of land measurement.
In practice the multiple hectare, 100 ares, became the principal unit of land measure.
Crop yields per unit of land increased, but despite improved techniques the output per worker declined.
Wheat, rye, and millet require less labour per unit of land and per unit of food output than do rice, potatoes, or corn (maize), but generally the latter yield more food per unit of land.
My research was designed to help small farmers increase their income by increasing productivity per unit of land and water.
Its multiple, the hectare (equal to 100 ares), is the principal unit of land measurement for most of the world.
