. The botany of crop plants : a text and reference book. Botany, Economic. ROOTS IS system of rootlets developed. Corn is found to have a large part of its lateral root system in the surface layers when the soil is poor. The general form of a root system may be changed by transplanting. As a result of the necessary in- jury accompanying this process, there is developed a compact root system. Desert plants usually have an extensive root system, reaching to considerable depths. Swamp plants, even trees, develop a spreading, and comparatively shallow root system. The method and amount of watering
. The botany of crop plants : a text and reference book. Botany, Economic. ROOTS IS system of rootlets developed. Corn is found to have a large part of its lateral root system in the surface layers when the soil is poor. The general form of a root system may be changed by transplanting. As a result of the necessary in- jury accompanying this process, there is developed a compact root system. Desert plants usually have an extensive root system, reaching to considerable depths. Swamp plants, even trees, develop a spreading, and comparatively shallow root system. The method and amount of watering affect the general shape of the |^^ perifc/em /dematoqen endoderrais root system. Fruit trees, for example, send their roots into the deeper soil layers if the surface layers are dry, but if the ground water level is close to the soil surface the root sys- tem will be more super- ficial. The character of the root system is often an index of soil conditions. General Characteristics of Roots.—It will be re- called that the seed plant body possesses a number of members, each with more or less distinctive characters. Roots have characteristics which stand out in qxiite marked contrast to those of other plant members. Roots do not give off their branches in a regular order, as stems do. They do not bear buds, except in very rare cases. Roots usually bear a root cap (Fig. 5) which pro- tects the growing point, while the growing point in stems. Fig. s.—Median lengthwise section of the apex of -a, root of barley. {After Slrasburger.). 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 Robbins, Wilfred William, 1884-1952. Philadelphia : P. Blakiston's Son
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectbotanyeconomic
