. Elementary principles of agriculture; a text book for the common schools. Agriculture. 96 Elementary Principles of Agriculture elements to suit the requirements of the crop. It is im- portant in this particular to remember that forage crops need large amounts of nitrogen, and grain crops much phosphorus. The fruit crops require much potash. A soil may be even deficient in any one or several of the essential elements. The best and safest guide to learn the special fertilizing needs of a soil is to try by test. (See t 133a.) 139. Chemical Elements May Not Be in Balance. A soil may contain so m
. Elementary principles of agriculture; a text book for the common schools. Agriculture. 96 Elementary Principles of Agriculture elements to suit the requirements of the crop. It is im- portant in this particular to remember that forage crops need large amounts of nitrogen, and grain crops much phosphorus. The fruit crops require much potash. A soil may be even deficient in any one or several of the essential elements. The best and safest guide to learn the special fertilizing needs of a soil is to try by test. (See t 133a.) 139. Chemical Elements May Not Be in Balance. A soil may contain so much nitrogen that the crop, say t^ ^^^^. I ^^s^^^^^mm^^^m^.,.. ^. 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 Ferguson, A. M. (Alexander McGowen), 1874-; Lewis, Lowery Laymon, 1869- joint author. Sherman, Tex. , Ferguson Publishing Company
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