Abstract
An experiment of foundation work was attempted to establish pasture on Ando soil in mountainous area which was located in the northeast of Lake Towada, Aomori Prefecture. Herein are reported the results that pasture establishment was carried out on the cutting land of pumice gravel layer. On the surface where pumice gravels were exposed, forage seedlings were susceptible to drought just after germination because moisture was hardly held by hard and large pumice gravel. This suggested that such a gravel layer should not be exposed in foundation work for pasture establishment. When cutting surface was covered with finer soil materials after seeding, however, forage was successfully established by the following applications of fertilizers and seed mixture ; basal fertilizers (kg/ha): hydrated dolomitic lime 2800, P_2O_5 300, N 50, K_2O 50, additional fertilizers: N 50, P_2O_5 50, K_2O 50, and seed mixture (kg/ha): Italian ryegrass 15, orchardgrass 15, ladino clover 10, with reseeding of Italian ryegrass 20, orchardgrass 20, ladino clover 20, respectively.
