. Soils and plant life as related to agriculture . Agriculture; Soils; Plants. 104 SOILS AND PLANT LIFE starves the roots. A girdled tree does not sprout from the stump. 80. The Flow of Sap. — We have perhaps heard that the sap flows upward in the spring and back downward in the fall. This is not the case. The roots absorb water throughout the growing season and this water moves up-. FiG. 33. — How a graft is made and how it grows together. ward rather rapidly through the water-carrjdng tubes to the leaves where food is manufactured ; and throughout the growing season, the food manufactured in
. Soils and plant life as related to agriculture . Agriculture; Soils; Plants. 104 SOILS AND PLANT LIFE starves the roots. A girdled tree does not sprout from the stump. 80. The Flow of Sap. — We have perhaps heard that the sap flows upward in the spring and back downward in the fall. This is not the case. The roots absorb water throughout the growing season and this water moves up-. FiG. 33. — How a graft is made and how it grows together. ward rather rapidly through the water-carrjdng tubes to the leaves where food is manufactured ; and throughout the growing season, the food manufactured in the leaves oozes back downward through the sieve tubes to all parts of the plant. 81. The Cambium Layer. — In the dicotyledons, there is a layer of cells between the water-carrjdng vessels and the sieve tubes which lie outside of them. This is known as the cambium layer. It is the thin, wet, slippery layer. 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 Cunningham, Jules Cool, 1879-; Lancelot, William Henry, 1874-. New York : Macmillan
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Keywords: ., bookcentury1900, bookd, booksubjectagriculture, booksubjectplants
