Root Dip Evaluation and Short Term Storage Trials with 1–0 Slash Pine Seedlings

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Abstract
Sodium alginate and clay slurry root dips applied to 1–0 slash pine seedlings were compared in four field planting trials. Both treatments increased stock survival relative to undipped controls with the clay dip clearly proving superior. An added advantage of the clay treatment is the lower product cost involved. The concentration of the slurry mix directly influences the degree of protection afforded planting stock. In other establishment trials 1–0 slash pine seedlings were stored in clean galvanised iron rubbish bins in the field (simulating routine storage in high sided transport units) for up to four days prior to planting. When combined with limiting weather conditions short term storage leads to a marked reduction in stock survival potential. It is advisable that storage periods be kept as short as possible and that adequate provision is made to shade and protect stock from sun and wind. A clay slurry (creamy consistency) root dip applied immediately after lifting is prescribed for all slash pine planting stock.

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