. Beginnings in agriculture. Agriculture. 88 AGRICULTURE of roller was in use until within recent years. Because of difficulty in turning, the two-piece or two-section roller was devised. There are now both smooth and rough, or ribbed, rollers in use. The earliest cultivator was a sort of crude hoe, with at first a single shovel. This gave way to the double shovel and the use of animal power. From the latter was developed the straddle-row. Fig. 37. — Spike tooth harrow. cultivator, to stir both sides of a row at one time. The double shovels, used ^in this country until 1860, were usually made
. Beginnings in agriculture. Agriculture. 88 AGRICULTURE of roller was in use until within recent years. Because of difficulty in turning, the two-piece or two-section roller was devised. There are now both smooth and rough, or ribbed, rollers in use. The earliest cultivator was a sort of crude hoe, with at first a single shovel. This gave way to the double shovel and the use of animal power. From the latter was developed the straddle-row. Fig. 37. — Spike tooth harrow. cultivator, to stir both sides of a row at one time. The double shovels, used ^in this country until 1860, were usually made by country blacksmiths. On April 22, 1856, George Esterly patented a straddle-row cultivator, and began the manufacture on a large scale. Why soils are tilled. — We have already learned that plants mil not grow unless their roots have a suitable home and feeding ground. An important factor in creating this suitable home is to have the soil in good physical condition; that is, to have good soil texture. Tillage is the best means of improving the texture of soil. The following are some of the reasons why soils are improved by tillage: (1) Tillage makes the soil finer and deeper, so that roots can reach farther. (2) It turns up the moist soil in spring and enables the surface to dry enough to make a good, early Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Mann, Albert Russell, 1880-. New York, Macmillan company
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Keywords: ., bookcentury1900, bookdecade1910, bookpubl, booksubjectagriculture
