. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Bui. 164, U. S. Dept. of Agriculture. Plate II. Fig. 1.âEffect of Vanillin on Wheat in Florida Sand. (Xo. 1, Soil â untreated; No. 2, vanillin 100 p. p. m.: Xo. 3, vanillin -200 p. p. m.; No. 4, vanillin 300 p. p. m.; No. 5, vanillin 400 p. p. m.; No. 6, vanillin 500 p. p. 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 United States. Dept. of
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Bui. 164, U. S. Dept. of Agriculture. Plate II. Fig. 1.âEffect of Vanillin on Wheat in Florida Sand. (Xo. 1, Soil â untreated; No. 2, vanillin 100 p. p. m.: Xo. 3, vanillin -200 p. p. m.; No. 4, vanillin 300 p. p. m.; No. 5, vanillin 400 p. p. m.; No. 6, vanillin 500 p. p. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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