Root dipping of conifer seedlings shows little benefit in the northern Rocky Mountains.

chambre de croissance crecimiento croissance cultivo protegido culture sous abri dipping ensayo fitotrones greenhouses growth growth chambers immersion invernaderos picea engelmannii pinus contorta pinus ponderosa plant planting stock plantule protected cultivation pseudotsuga menziesii racine root treatment roots seedlings serre stems supervivencia survie survival tallo testage testing tige traitement des racines vermiculita vermiculite vermiculites