Introduction to the PRS

An simplified example of a PRS sheet

Forest landowners should always plant adapted families of loblolly pine (Pinus taeda) that have appropriate levels of genetic improvement for volume growth or productivity, disease resistance, with desirable stem form and wood quality. Some may be very fast growing but are susceptible to fusiform rust disease.  Because of the high level of genetic variation in loblolly pine, the NCSU Cooperative Tree Improvement Program (NCSUCTIP) developed the Loblolly Pine Performance Rating System ( PRS™) as a service to landowners, nursery managers, the tree improvement community, and loblolly pine breeders. PRS™ also stands for Productivity, Rust, and Straightness that are the three traits that are evaluated in all genetics trials. The PRS™ expresses the genetic potential of a family for stem volume production, resistance to fusiform rust disease, stem straightness.

Please follow the links below for a more detailed description of how each trait is interpreted.

Productivity

Rust

Straightness

An example of a full PRS™ spec sheet

Members who would like to generate their own Spec Sheets, please visit here.