It is the total amount available for harvest in a given time. It is the summation of annual increments.

Factors affecting the yield

1. Point in time in stand development
2. Site quality
3. The degree to which the site is occupied

The measure of stand density most commonly used in growth and yield model. The term yield is used in forestry with a number of qualifiers e.g. annual, intermediate, final, sustained, financial. Each has a special connotation for management. In this course, we shall use yield in a very general sense implying the accumulation of increment available at a particular time for a particular purpose, e.g. the total amount of wood capable of being harvested at a certain time.

Types of yield

1. Final Yield: All the material that counts against the prescribed yield and which is derived from the main fellingsin a regular forest.
2. Intermediate Yield: All material from thinningsor operations preceding the main felling in a regular forest, or its cash equivalent. (syn. Subsidiary Crop)
3. Normal Yield: The yield from a normal forest
4. Total Yield: The standing volume of a crop plus the total volume removed in thinningssince its establishment as a more or less even aged stand; or the sum of the final and intermediate yields.
5. Sustained Yield: The material that a forest can yield annually or periodically in perpetuity.