. Bulletin. Agriculture -- Ontario. 62 Let us now direct our attention to the root of the beet. Removing- the earth carefully, we find that there is one well developed root pushing- straight downward into the soil, and that smaller roots are sent out from it in two side rows. We notice also that for some distance below the sur- face of the soil the main root is smooth, and free from these smaller rootlets. How is it that so very little of the fleshy root of the beet appears above the surface of the soil? In reply to this question, we would ask you to observe the great length of these rootlets.
. Bulletin. Agriculture -- Ontario. 62 Let us now direct our attention to the root of the beet. Removing- the earth carefully, we find that there is one well developed root pushing- straight downward into the soil, and that smaller roots are sent out from it in two side rows. We notice also that for some distance below the sur- face of the soil the main root is smooth, and free from these smaller rootlets. How is it that so very little of the fleshy root of the beet appears above the surface of the soil? In reply to this question, we would ask you to observe the great length of these rootlets. "It has been frequently found that drains four and five feet below the surface of the soil have been blocked by ; As the rootlets develop, therefore, they exert a downward force upon the bulb, and this force tends to draw the bulb into the soil. Conditions being favorable, the beet plant grows quickly. The main root thickens rapidly for a time; then we observe a less marked increase in size, and finally we can detect little, if any, development in this direction. During its development, small sacs, or cells, are formed within the root. These cells act as store-houses for the food material of the plant. Let us again observe the leaves. The first thmg that attracts our attention is the color of the leaf. Have you ever thought of the cause of this shade in the leaves of growing plants? It is due to the presence of a certain green substance known as chloroplivll. This big word has been made up from two Greek words that simply mean "leaf ; This chlor- ophyll plays a very im- portant part in the life- story of sugar. The par- ticular use of this green matter is to change the raw material into plant food. One of the chief materials of plant food is carbonic acid gas. This gas comes from the lungs of animals. All living creatures are continually -Shows the stem sent up from the crown of the beet. Second breathing OUt Carbonic. from their h Fig. , ye
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