In the case of cropped soils we find the amount of nitrates very much less. A table containing an elaborate series of determinations of nitrates in cropped soils, receiving, however, no manure, and taken to a depth of 9 feet, will be found in the Appendix.[77] The first 27 inches only contain some 5 to 14 lb.
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three, n. trio, trinity, triad, ternary, ternion; triplets.
per acre, and the most of that is found in the first 9 inches. This shows how speedily nitrates are assimilated by the growing crop.
Associated Words: thrice, treble, trialogue, triarchy, triplicate, triplication, triplicity, trinal, triarchy, tripartition, tripod, triptych, trisect, trisection, trireme, triumvirate, trilogy, triform, triformity, trilling, trilemma. An interesting point shown by these analyses is that nitrates almost entirely cease in cropped soils a certain depth down, but that at a still lower depth they again occur in small quantities.