Radiata pine residue management and its implications for site productivity on sandy soils

Summary

Litter and logging residue retained in situ as a mulch has several beneficial aspects that can assist in maintaining the productivity of radiata pine (Pinus radiata D. Don) plantations on sandy soils in the Mt Gambier region of southern Australia. These benefits include the conservation of soil moisture, conservation of nutrients, protection of soil, and provision of a more favourable environment for root development in the surface soil horizons. The maintenance of site fertility by the addition of fertilisers is discussed and compared in both ‘burn’ and ‘non-burn’ situations. Mulching the litter and logging residue is operationally feasible and is an option that should be considered by plantation managers when re-establishing radiata pine, particularly on soils of low to moderate fertility.