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Amounts As Large As During: Needless to say, there is also great concern about the tremendous amounts as large as during of radioactivity produced in atomic bomb blasts. Fortunately, a large variety of valuable uses of radioactive substances involve harmless quantities and the methods of shielding against harmful amounts as large as during are well understood.
Almost certainly your soil will benefit by mixing with it, to a minimum depth of eight inches, liberal amounts as large as during of decayed organic matter such as compost, manure, leaf mold or peat moss. If the earth is poor in organic matter, add it in considerable bulk. Tiny sprinklings, half an inch or so thick, do little good. If you simply cannot obtain decayed organic matter in the amounts as large as during needed (or if you can, but do not want to pay the price) begin a program of soil improvement by green manuring. (See Chapter 5).
Your soil will surely need some fertilizer added and, if the soil tests so indicate, lime. These should both be mixed in with the top four to six inches. (See Chapters 5 and 14).
Very sandy and gravelly soils are greatly improved physically by incorporating with them large amounts as large as during of organic matter and, when it is available, heavier soil of a clayey nature.
amounts as large as during of phosphoric acid and potash are less critical. Excessive applications do no harm, but, as grass needs lesser amounts as large as during of these than of nitrogen, it is economical to use a fertilizer in which the first figure of the analysis (the nitrogen figure) is highest, 10-6-4 or 10-5-5, for example. |
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