FERTILIZATION FOR NAKED BARLEY. Pounds per acre. Fertilizers. N P K Manure compost 6,613 33.0 7.4 33.8 Rape seed cake 330 16.7 2.8 3.5 Night soil 4,630 26.4 2.6 10.2 Superphosphate 132 9.9 ---------------------- Sum 11,705 76.1 22.7 47.5 FERTILIZATION FOR PADDY RICE. Manure compost 5,291 26.4 5.9 27.1 Green manure, soy beans 3,306 19.2 1.1 19.6 Soy bean cake 397 27.8 1.7 6.4 Superphosphate 198 12.8 ---------------------- Sum 9,192 73.4 21.5 53.1 ====== ===== ==== ===== Total for year 20,897 149.5 44.2 100.6 Where these recommendations are followed there is an annual application of fertilizer material which aggregates some ten tons per acre, carrying about 150 pounds of nitrogen, 44 pounds of phosphorus and 100 pounds of potassium. The crop yields which have been associated with these applications on the Station fields are about forty-nine bushels of barley and fifty bushels of rice per acre. The general rotation recommended for this portion of Japan covers five years and consists of a crop of wheat or naked barley the first two years with rice as the summer crop; in the third year genge, "pink clover" (Astragalus sinicus) or some other legume for green manure is the winter crop, rice following in the summer; the fourth year rape is the winter crop, from which the seed is saved and the ash of the stems returned to the soil, or rarely the stems themselves may be turned under; on the fifth and last year of the rotation the broad kidney or windsor bean is the winter crop, preceding the summer crop of rice. This rotation is not general yet in the practice of the farmers of the section, they choosing rape or barley and in February plant windsor or soy beans between the rows for green manure to use when the rice comes on. It was evident from our observations that the use of composts in fertilizing was very much more general and extensive in China than it was in either Korea or Japan, but, to encourage the production and use of compost fertilizers, this and other prefectures have provided subsidies which permit the payment of $2.50 annually to those farmers who prepare and use on their land a compost heap covering twenty to forty square yards, in accordance with specified directions given.