. Corn; growing, judging, breeding, feeding, marketing; for the farmer, student and teacher of agriculture, a textbook for agricultural colleges and high shcools. Corn. GR()\\'TH OF STEMS 43 moisture from within. Being smooth, it afl'ords no place for the lodgment of smut spores. Insects find difficulty in inserting their sucking mouth into these parts. (2) The woody wall, which is really a layer consisting of a close union of a great number of fibro-vascular bundles. In the small grains and grasses, this woody wall is the only supporting structure in the stem. From each node, where a leaf gro
. Corn; growing, judging, breeding, feeding, marketing; for the farmer, student and teacher of agriculture, a textbook for agricultural colleges and high shcools. Corn. GR()\\'TH OF STEMS 43 moisture from within. Being smooth, it afl'ords no place for the lodgment of smut spores. Insects find difficulty in inserting their sucking mouth into these parts. (2) The woody wall, which is really a layer consisting of a close union of a great number of fibro-vascular bundles. In the small grains and grasses, this woody wall is the only supporting structure in the stem. From each node, where a leaf grows out, a number of these bundles leave the wall to extend into the leaf to feed it. The more rank the growth, the greater is the number of these bundles in the wall, (3) The pith IS composed of parenchyma cells and fills the center of a corn stem. With a given weig'ht of material, a hollow column is stronger than a solid one in withstanding pressure, as heavy winds in summer, although when exces- sive weight is borne by sucli a column the sides are liable to collapse. To meet the former condition, the stems of cereals are hollow, while in the latter case the stalk of corn has a light filler. The cells of the pith are very large and loosely arranged, and although they do not transport moisture, they do act as reservoirs in time of drought. During the final stages of maiurity, after frost has killed the leaves and the stalk loses its color, the ker- nels on the ear arc fed for some The pith has one other func-. Section of corn-stalk showing pith, flbro- vascular bundles, and epidermis. time from the plant food stored here fioii, to hold in place the fibro-vasculav bundles. (4j The fibro-vascular bundles arc the circulatory ducts for the. 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 Bowman, Melville Le Roy,
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectcorn, bookyear1915
