The book Food for Plants was written by author Myers, William S. (William Shields), 1866-1945 Here you can read free online of Food for Plants book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Food for Plants a good or bad book?
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. Heavy loam soil. . . Sandy Soil Sandy soil Sandy soil Sandy soil Sandy soil Sandy soil Sandy soil 85.9 91.3 89.S 91.4 87.9 87.8 86.5 86.0 81.4 84.6 89.4 gr. 26 67 43 60, 38 49 16, 62 54 32 57 potash gr- 8 o 47' 60, 58 60, 66 33' 23 43 20 53 50 nitrogen gr- 5-7 7.0 4.0 12.2 4-5 3-5 2.6 6.0 5-9 7-2 8.6 A glance at the table shows that among 1 1 soils, there are those rich in phosphoric acid and poor in phosphoric acid, rich in potash and poor in potash, but not a single one of the II soils has ...shown itself to be rich in nitrogen; all zvere es- sentially poor in nitrogen. If either the phosphoric acid or potash were omitted from the dressing, the yields fell regu- larly, and if nitrogen were omitted the yields fell in quite a striking manner. These experiments, also, show further to what a great extent a dressing of Nitrate of Soda increased the yield when the soil is hungry for nitrogen, and not the yield of straw alone, but in like proportion the gram also. It is false to say that nitrogen affects the yield of straw, and phosphoric acid the yield of grain.
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