almudes 27
Almudes is the plural of bushel. It is a word of Arabic origin and refers to a measure already in disuse, in agriculture, used for measuring land or crops. Their equivalence as a surface was very questionable because used ergonomic measures that could change as that measured ( elbows, steps, etc. ). Usually it is assumed that a bushel amounted to half fanegada, or equals a bushel. It was something about as well as between 3200 and 3500 square meters. As antique surveying, less than an acre.