. Complete farmer's guide. Agriculture; Farm life. [from old catalog]. MANURES, FERTILIZERS, AND ROTATION 123 In addition to the use of experi- ment plats a great deal can be learned by looking at the growing crop. If the crop is small and pale, the soil needs nitrogen. If the stalks and leaves are vigorous and green, but the plant is deficient in fruit, there is plenty of nitrogen, but phosphate is needed, as this pro- motes fruitage and early ripening. If the stems are weak and the plants tend to drop their fruit, potash is probably needed, as this also helps directly in developing the fruit
. Complete farmer's guide. Agriculture; Farm life. [from old catalog]. MANURES, FERTILIZERS, AND ROTATION 123 In addition to the use of experi- ment plats a great deal can be learned by looking at the growing crop. If the crop is small and pale, the soil needs nitrogen. If the stalks and leaves are vigorous and green, but the plant is deficient in fruit, there is plenty of nitrogen, but phosphate is needed, as this pro- motes fruitage and early ripening. If the stems are weak and the plants tend to drop their fruit, potash is probably needed, as this also helps directly in developing the fruit and promoting the general vigor of the plant. All of these signs are useful to know, but they do not always hold, as other causes may also produce the same ap- pearances as those mentioned Fig. 71. Millet grown on equal and acl,1oining areas. That on the left had no fertilizer and produced one ton per acre. That on the right was given 200 pounds of potassium chloride per acre and produced three tons per acre. The cost of treatment was five dollars per acre. The in- crease in the crop was worth forty dollars per acre. Courtesy of Mr. Louis H. 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 Kyle, Edwin Jackson. [from old catalog]; Ellis, Alexander Caswell, 1871- [from old catalog] joint author. New York, Chicago [etc. ] C. Scribner's sons
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
