Study on Labor Saving in Gardening Tree Production by Using Nonwoven Fablics Materials

Abstract

1. The efficiency of the nonwoven fablic materials for the labor amount saving was tested in the transplanting of Yoshino cherry (Prunus × yedoensis Matum.) about 5 meters high.
2. The labor amount in the transplanting of a tree was shown in the formulation of relative metabolic rate (RMR)× working time. The experiments were executed in August 1990 the most sever month for the tree transplanting.
3. The root-off type nonwoven fablic sheet, through which roots could not run, saved the labor amount to 1/5 of the traditional way in the transplanting work, but raised trees to only 270% of the initial trees in the trunk volume during 3 years of the cultivation. Further, the transplanted trees showed a low survival rate.
4. The root-through type nonwoven fablic pots (45cm in diameter) saved labor amount to about 1/4 of the traditional way, and got the trees to 560 % of the initial trees in massive trunk volum. The trees these pots showed the relatively high tolerance against the transplanting stress in the harmful seasons.