. Feeds and feeding abridged : the essentials of the feeding, care, and management of farm animals, including poultry : adapted and condensed from Feeds and feeding (16th ed.). Feeds; Animal nutrition. FEEDS AND FEEDING, ABRIDGED tained from the air, ten thousand parts of which contain 3 to 4 parts by volume of carbon dioxid. The air supplies carbon dioxid to the cells of the plant thru the innumerable minute openings on the under surface of the leaves. In producing a 15-ton crop of green corn over 5 tons of carbon dioxid are required, to obtain which the plants must take in over 12,000 tons o
. Feeds and feeding abridged : the essentials of the feeding, care, and management of farm animals, including poultry : adapted and condensed from Feeds and feeding (16th ed.). Feeds; Animal nutrition. FEEDS AND FEEDING, ABRIDGED tained from the air, ten thousand parts of which contain 3 to 4 parts by volume of carbon dioxid. The air supplies carbon dioxid to the cells of the plant thru the innumerable minute openings on the under surface of the leaves. In producing a 15-ton crop of green corn over 5 tons of carbon dioxid are required, to obtain which the plants must take in over 12,000 tons of air. Yet the supply of carbon dioxid is never exhausted, for it is being continuously returned to the air thru the breathing out of carbon dioxid by animals and the decay of plant and animal matter. Nitrogen abounds in the living, growing parts of plants. Altho •about three-fourths of the air is nitrogen gas, plants in general cannot use the free nitrogen of the air, but obtain their supply from nitrogen- containing compounds in the soil, chiefly the nitrates. Bacteria living U/ater (Hydrogen and oxygen. .Carbon dioxid (Carton andarype/p). /77/nera/ matter Suiphur Ca/cium Phosphorus iWagnesium Potassium Iron iiiirates Pig. 2.—Where Plants Secure Their Food Plants obtain carbon dioxid from the air, and water, mineral matter, and nitrates from the soil. Legumes are able to use indirectly the nitrogen of the air. Plants give off water and free oxygen gas to the air thru their leaves. in nodules on the roots of legumes, such as clover, alfalfa, and peas, are able to take nitrogen gas from the air and pass it on in combined form to the host plants. Thus, the legumes are able indirectly, thru the aid of these bacteria, to use the nitrogen of the air as food. Oxygen, which is a part of all plant compounds, is obtained largely from water and carbon dioxid, and not from the free oxygen gas of. Please note that these images are extracted from scanned page images that may have been
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfeeds, bookyear1917
