There was little agriculture, only five fanegas of wheat being harvested in 1772.
"The Old Franciscan Missions Of California" by George Wharton James
Five fanegas are equal to one English quarter.
"The Commercial Products of the Vegetable Kingdom" by P. L. Simmonds
In Castile =fanega= = 1.575 bushels, =fanegada= = 1.6 acres; in other provinces otherwise.
"Doña Perfecta" by Benito Pérez Galdós
Measuring by fanegas was then still in vogue in Mexico; a fanega equals about sixty-four kilograms.
"Unknown Mexico, Volume 1 (of 2)" by Carl Lumholtz