. Bulletin of the Department of Agriculture. Agriculture; Agriculture. FARM PRACTICE IN" THE CULTIVATION OF CORK, 37. Fig. 29.—A 1-horse spike-tooth cultivator. Practically all the corn is planted level and mostly in drills 3^ feet apart, with hills 2 or 3 feet apart in the drill and three or four stalks per hill. Chiefly the yellow flint varieties of corn are grown. After planting-, either a spike-tooth harrow or weeder is frequently used for the first cultivation. The 1-horse spike-tooth (fig. 29) and the 1-horse 5-shovel cultivators are extensively used. The 2-horse 8-shovel and 6


. Bulletin of the Department of Agriculture. Agriculture; Agriculture. FARM PRACTICE IN" THE CULTIVATION OF CORK, 37. Fig. 29.—A 1-horse spike-tooth cultivator. Practically all the corn is planted level and mostly in drills 3^ feet apart, with hills 2 or 3 feet apart in the drill and three or four stalks per hill. Chiefly the yellow flint varieties of corn are grown. After planting-, either a spike-tooth harrow or weeder is frequently used for the first cultivation. The 1-horse spike-tooth (fig. 29) and the 1-horse 5-shovel cultivators are extensively used. The 2-horse 8-shovel and 6-shovel cultivators are also considerably used. A special 2-horse cultivator, equipped with sharp scrapers or knives for cutting the weeds and stirring the surface of the soil, is largely used (fig. 30). This cul- tivator was designed for culti- vating tobacco, and the knives are so adjusted that they will extend under the leaves and cultivate near the stalk without breaking or bruising the leaves. As shown in Table XVII there is little uni- formity in the cultivation methods in this section. Practically no cover crops are grown, and the supply of organic matter is largely main- tained by stable manure secured from the cities. Immense quantities of commercial fertilizers are used for corn and to- bacco, and about 15 tons of stable manure per acre are applied to the tobacco land every other year. Very little stable manure is applied to the corn land, however. The most prevalent weeds are ragweed, chickweed, pigweed, smart- weed, wild carrot, and barnyard grass. SURVEYS IN BRADFORD COUNTY, PA.' The tillage records for Bradford County, Pa. (Table XVIII), were taken neur Towanda, in the Volusia silt-loam area, which covers a large pari of noil hern Pennsylvania, northeastern Ohio, and south- ern New York. The soils of <his region are naturally divided into two main groups, upland or hill soils and the bottom-land soils. The hill or upland soils are extremely rough and rolling


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