Elementary principles of agriculture Elementary principles of agriculture : a text book for the common schools elementaryprinci02ferg Year: 1913 354 Elementary Principles of Agriculture rapid growth, especially seedlings. Plant seed in flats about one inch apart and transplant to pots or larger flats when second or third leaves appear. Much time will be lost if the plants are allowed to grow slender from crowding, poor light, or confinement in close spaces. Early started tomato and other plants should be 'hardened off' before transplanting to the open. This is done by gradually exposing the
Elementary principles of agriculture Elementary principles of agriculture : a text book for the common schools elementaryprinci02ferg Year: 1913 354 Elementary Principles of Agriculture rapid growth, especially seedlings. Plant seed in flats about one inch apart and transplant to pots or larger flats when second or third leaves appear. Much time will be lost if the plants are allowed to grow slender from crowding, poor light, or confinement in close spaces. Early started tomato and other plants should be 'hardened off' before transplanting to the open. This is done by gradually exposing the plants to the cooler night temperatures and being less liberal in supplying water to the pots. Fig. 222. Potatoes should be planted deep. On left, planted only two inches deep, and as a result some were sunburned. On right, planted four inches deep —deep enough for the potatoes to be protected but still easy to dig. Note the growth of roots. 521. Irish Potatoes are grown in every state in the Union. In the northern states the crops are stored and used through the year. In the South two crops are produced. The spring crop is usually rushed to market to get the benefit of high prices. The fall crop is usually marketed more slowly, a part being saved for seed for the spring crop. The potato is a tuber, a thickened stem, which, like root crops, shows good results from deep break- ing. Sandy loamy soils, rich in humus and plant fiber, are especially desirable. In the potato regions of the West rotations involving grain and the plowing under of the last cutting of alfalfa have proven to be highly profit-
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