Patent ID: 8001723
Filing Date: 2011-08-23
Classification: A01C,A01G

Abstract:
1. A tool for promoting growth of a seedling to obtain a seedling having a long root capable of rooting in planting ground, the tool comprising: a tube one end of which reaches a subsurface water-containing layer of the planting ground, the tube being made from a porous material; and a growing medium filled inside the tube, wherein the growing medium is adjusted to a hardness that promotes the downward growth rate of the root of the seedling fixed inside an upper opening portion of the tube, wherein the hardness of the growing medium is equal to or less than 1.5 Mg·m an adaption layer filled with a growing medium at a hardness higher than the hardness of the growing medium filled in the tube is provided in the inside of the lower end of the tube.