Economic implications of silvipastures on southern pine plantations

摘要: In 1984, five silvipasture treatments of native grasses (NG), Au-Lo-Tan lespedeza (L), bahiagrass (B), common bermudagrass (CM), and Coastal (CB), were established in a thinned 20-year-old loblolly pine plantation. Pine growth data collected 1987, 1989. From 1986 to 1988, annual forage production was evaluated at 21-day intervals from April October with dry matter yield quality determined for each sampling interval. Forage management improved timber 5-year lumber on the NG, B, CM, CB exceeding untreated plantation by 5.4 m3 ha−1. protein content, IVDMD, P levels did not differ among but daily (p=0.05). Mean 3-year yields 7.4, 5.9, 12.3, 8.3, 18.5 kg ha−1 L, CB. Financial comparison open pasture showed that internal rate return exceeded 7.3%. A pine-forage intercropping system is suitable option maturing plantations.