Development of Simulator for Assessing Environmental Impacts of Agriculture in Miyako-Island

Abstract

Rhodes grass (legume,perennial). Cutting frequency:4 times per year. No irrigation. Renewal: every 7 years Yield 5t Chem. fert. Compound fert. 40kg/cutting Pesticides-Fuel Diesel from plowing to leveling 2.8L (at renewal) from application of fertilizer to cutting and wrapping:3.3L/cutting Sugarcane Abstract Summer planting/Spring planting. planting area: half of the field. 10% of sugarcane were not harvested because of seeds. Yield 7t (Summer planting) / 5t(Spring planting) Chem. fert. Compound fert. 150kg Pesticides Granular 6kg, Liquid 0.2L Fuel Diesel-from plowing to second molding 10.9L-harvesting (with machine) 12.8L Remark rate of trash: by hand 2%, with machine 15% Squash (open filed) Abstract sowing in Sep. / harvesting in Jan. Yield 1.1t (percentage of shipping: 91.4) Chem. fert. Compound fert. 80kg+40kg Liquid fert. 4L, Compost 600kg Pesticides Granular 10.2kg, Liquid 0.3L Fuel Diesel 27.0L Gasoline 18.0L Bitter melon (greenhouse) Abstract sowing in Oct. / harvesting from Dec. to May Yield 5.5t Chem. fert. Compounded fert. 100kg, Organic fert. 150kg Liquid fert. 130kg, Compost 5t Pesticides Granular 7.5kg, Liquid 0.5L Fuel Diesel 12.6L, Gasoline 107.4L Tobacco Abstract harvesting from Apr. to Jun. Yield 0.22t Chem. fert. Compound fert. 180kg+1.5kg Pesticides Granular 38.6kg, Liquid 11.2kg Fuel Diesel 22.5L, Gasoline 20.6L Kerosene 4.3L, Electricity (5.2 + 244)kWh Remark Kerosene and electricity were used at drying and storage facilities Values such as yield, fuel and pesticides are per 0.1ha