Enhanced Summer Planting Survival of Japanese Larch Container-Grown Seedlings

A previous study revealed low survival rates for Japanese larch (Larix kaempferi) summer-planted seedlings grown in Hiko-V-120 containers. This examines nursery practices that could potentially prevent deterioration of the seedling water balance after planting to improve rate this species, which has a drought tolerance. During summer planting, we tested (1) hardening or high-potassium fertilization two months before (2) antitranspirant topping treatment at and (3) use JFA-150 container with larger capacity lower growing density than container. Drought increased tolerance because leaf:root ratio, due leaf mass production, resulting from 74% 93% When containers were used, ratio was higher root mass, an increase 87%, highest 97% when combined hardening. The application over 90%, whereas did not, probably severer competition weeds. High-potassium not affect traits survival. For better container-grown seedlings, it is recommended they be providing sufficient cell volume growth while are irrigation withheld planting. In addition, obtain survival, can applied cost.