Nitrogen Phosphorus Potassium
Pounds per million
In paddy field
Soil 1520 769 805
Subsoil 810 756 888
In upland field
Soil 1060 686 1162
Subsoil 510 673 1204
The green manure crops on this plain are chiefly two varieties of the "pink clover," one sowed in the fall and one about May 15th, the first yielding as high as sixteen tons green weight per acre and the other from five to eight tons.
On the plain distant from the mountain and hill land the stems of agricultural crops are largely used as fuel and the fuel ashes are applied to the fields at the rate of 10 kan per tan, or 330 pounds per acre, worth $1.20, little lime, as such, being used.
In the prefecture of Aichi, largely in this plain, with an area of cultivated land equal to about sixteen of our government townships, there is a population of 1,752,042, or a density of 4.7 per acre, and the number of households of farmers was placed at 211,033, thus giving to each farmer's family an average of 1.75 acres, their chief industries being rice and silk culture.
Soon after leaving the Agricultural Experiment Station of Aichi prefecture at An Jo we crossed the large Yahagigawa, flowing between strong levees above the level of the rice fields. Mulberries, with burdock and other vegetables were growing upon all of the tables raised one to two, feet above the rice paddies, and these features continued past Okasaki, Koda, and Kamagori, where the hills in many places had been recently cut clean of the low forest growth and where we passed many large stacks of pine boughs tied in bundles for fuel. After passing Goyu sixty-five miles east from Nagoya, mulberry was the chief crop. Then came a plain country which had been graded and leveled at great cost of labor, the benches with their square shoulders standing three to four feet above the paddy fields; and after passing Toyohashi some distance we were surprised to cross a rather wide section of comparatively level land overgrown with pine and herbaceous, plants which had evidently been cut and recut many times. Beyond Futagawa rice fields were laid out on what appeared to be, similar land but with soil a little finer in texture, and still further along were other flat areas not cultivated.
At Maisaka quite half the cultivated fields appear to be in mulberry with ponds of lotus plants in low places, while at Hamamatsu the rice fields are interspersed with many square-shouldered tables raised three to four feet and occupied with mulberry or vegetables. As we passed upon the flood plain of the Tenryugawa, with its nearly dry bed of coarse gravel half a mile wide, the dwellings of farm villages were, many of them surrounded with nearly solid, flat-topped, trimmed evergreen hedges nine to twelve feet high, of the umbrella pine, forming beautiful and effective screens.
At Nakaidzumi we had left the mulberry orchards for those of tea, rice still holding wherever paddies could be formed. Here, too, we met the first fields of tobacco, and at Fukuroi and Homouchi large quantities of imported Manchurian bean cake were stacked about the station, having evidently been brought by rail. At Kanaya we passed through a long tunnel and were in the valley of the Oigawa, crossing the broad, nearly dry stream over a bridge of nineteen long spans and were then in the prefecture of Shizuoka where large fields of tea spread far up the hillsides, covering extensive areas, but after passing the next station, and for seventeen miles before reaching Shizuoka we traversed a level stretch of nearly continuous rice fields.
The Shizuoka Experiment Station is devoting special attention to the interests of horticulture, and progress has already been made in introducing new fruits of better quality and in improving the native varieties. The native pears and peaches, as we found them served on the hotel tables in either China or Japan, were not particularly attractive in either texture or flavor, but we were here permitted to test samples of three varieties of ripe figs of fine flavor and texture, one of them as large as a good sized pear. Three varieties of fine peaches were also shown, one unusually large and with delicate deep rose tint, including the flesh. If such peaches could be canned so as to retain their delicate color they would prove very attractive for the table. The flavor and texture of this peach were also excellent, as was the case with two varieties of pears.
The station was also experimenting with the production of marmalades and we tasted three very excellent brands, two of them lacking the bitter flavor. It would appear that, in Japan, Korea and China there should be a very bright future along the lines of horticultural development, leading to the utilization of the extensive hill lands of these countries and the development of a very extensive export trade, both in fresh fruits and marmalades, preserves and the canned forms. They have favorable climatic and soil conditions and great numbers of people with temperament and habits well suited to the industries, as well as an enormous home need which should be met, in addition to the large possibilities in the direction of a most profitable export trade which would increase opportunities for labor and bring needed revenue to the people. In Fig. 242 are three views at this station, the lower showing a steep terraced hillside set with oranges and other fruits, holding out a bright promise for the future.
Peach orchards were here set on the hill lands, the trees six feet apart each way. They come into bearing in three years, remain productive ten to fifteen years, and the returns are 50 to 60 yen per tan, or at the rate of $100 to $120 per acre. The usual fertilizers for a peach orchard are the manure-earth-compost, applied at the rate of 3300 pounds per acre, and fish guano applied in rotation and at the same rate.