Annual report of the Board of Control of the New York Agricultural Experiment Station . rganic materials from which the plant tissuesare constructed. The foliage, then, is the assimilating apparatusof the apple-tree. In a slightly different sense it may be said to bethe breathing apparatus of the tree. Or, in another way a leaf iswell called a solar engine getting its energy from the light rather thanfrom the heat of the sun. In any and all of these aspects of thefunctions of foliage it is seen at once that the efficiency of an apple-tree depends in large measure upon its foliage. What is the
Annual report of the Board of Control of the New York Agricultural Experiment Station . rganic materials from which the plant tissuesare constructed. The foliage, then, is the assimilating apparatusof the apple-tree. In a slightly different sense it may be said to bethe breathing apparatus of the tree. Or, in another way a leaf iswell called a solar engine getting its energy from the light rather thanfrom the heat of the sun. In any and all of these aspects of thefunctions of foliage it is seen at once that the efficiency of an apple-tree depends in large measure upon its foliage. What is the effectof these two methods of treatment upon the foliage of the trees inthis experiment? Color of foliage.— The part of the leaf which acquires energy fromlight is the chlorophyll, the green coloring matter, found in theleaves of all higher plants. Now the amount of this indispensablechlorophyll in the leaf of an apple is measured by the depth andrichness of the green of the foliage. Leaf-color is the readiest andmost delicate gage the fruit-grower can use in determining the well-.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear
