Forest Cycle - CMPC Maderas
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Forest Cycle

A primary step in forestry is the actual formation of the forest.  At CMPC, forest formation is guided through a strict seed selection process and genetic improvement. Seeds are obtained from top ranked trees that present the best form, height and structure and other features of forestry interest.


CMPC has a highly mechanized nursery; unique in South America using “fertiriego” (applies fertilizer through irrigation).

The nursery is called Carlos Douglas, and is located in Cabrero, region VIII. This nursery produces nearly 30 million plants for afforestation and reforestation. The average plantation rate for CMPC in Chile has been about 54,340 acres yearly, that means more than 250 million trees planted in the last ten years. Once the trees are 4 to 5 years old, for radiate pine, the forest management process begins (thinning and pruning), which is a decisive step in the forest cycle because it allows for the growth of high quality lumber for industrial uses, construction, etc.

The purpose of thinning is to remove low value trees in order to improve soil nutrients and light conditions for the high value trees. The goal is to produce healthy and well-formed trees as well as to increase their diameter.

Pruning is conducted to remove branches from the lower part of the tree allowing the development of knot-free wood which is much more valuable for manufacturing.

Depending on the final use of the wood, the average harvest age of the trees ranges from 18 to 20 years if used for pulp and 20 to 25 years if used for sawing or peeling.

After the harvest, the logs are transported to a stack area, loaded on trucks and transported to consumption centers including the panel plant. All CMPC plants are strategically located to ensure a steady and sustainable supply flow as well as a timely delivery of the finished products to the ports.