Excerpt from Profitable Management of General Farms in the Williamette Valley, Oregon
Definitions Of some Of the terms used in this discussion may be found helpful in studying the tables which follow. Improved land. -the usable portion Of the farm. It includes the tillable area and any portion Of the farm that has been improved sufficiently to furnish fairly good pasturage. Rotation area. — That portion Oi the farm upon which field crops are Changed about from year to year. It includes the areas in field crops, summer fallow, and pasture in rotation. It does not include the area in fruit and garden. F add-crop area. — That portion Of the farm occupied by the field crops.
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