The gardening company in Hyogo Prefecture product the dirt which use in Koshien field. It is called "Koshien-style dirt". The Hanshin Engei company who preserve the Koshien field at Koshien Stadium in Nishinomiya, this site is use for national high school baseball championship. They began selling their product on 1st Aug. This product is called "Hanshin Engei groundskeeper's dirt" and it is the same dirt that use in Koshien Stadium. One of their customer wonder that how many bag of dirt that would cover all the baseball field. It used 28,000 bags which cost 2,310 yen for each bag.
This dirt have 60% of black soil and 40% of sand ,and both of them from Kagoshima Prefecture. Hanshin Engei began to advise this dirt to high school three year ago because they believe that their product will help to create good environment to play baseball and it also help baseball player have concentrate while they play at Koshien Stadium.
In conclusion, I think this dirt is very interesting to invest in because I believe that many high school baseball team will buy it because it can help player concentrate when play at Koshien.