Modification of Seed Covering Material Yields More and Larger Pine Seedlings
Ponderosa pine (Pinus ponderosa Dougl. ex Laws.) seed, sown in a soil with a high composition of calcium carbonate that tends to crust, was covered with either soil, soil treated with phosphoric acid, light colored sand, or dark volcanic cinder. After two seasons, seedling density and size were greatest with cinder covering, second best with sand, and poorest with soil. Phosphoric acid was ineffective. Tree Planters' Notes 38(1):11-13; 1987
Download this file:
Download this file
—
PDF document,
64Kb
Details
Author(s): Richard W. Tinus
Publication: Tree Planters' Notes - Volumes 38, Number 1 (1987)
Section: General
Volume: 38
Number: 1
