Address to the Chemical Section of the British Association
The book Address to the Chemical Section of the British Association was written by author Gilbert, Joseph Henry, Sir, 1817-1901 Here you can read free online of Address to the Chemical Section of the British Association book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Address to the Chemical Section of the British Association a good or bad book?
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It cannot be that, in growing the same crop year after year on the same land, there ia any residue left in the soil that is injtirious to the subsequent growth of the same description of crop ; for (excepting the beans) more of each description of crop has been grown year after year on the same land than the average yield of the country at large under ordinary rotation, and ordinary treatment— provided only, that suit- able soil-conditions were supplied. Nor can the diminishing produce, and the... diminishing yield of nitrogen, be accounted for on the supposition that there was a deficient supply of available mineral constituents in the soU. For, it has been shown that the cereals yielded little more, and declined nearly as much as without manure, when a complex mineral manure was used, such as was proved to be ade- quate when available nitrogen was also supplied. So far as 'the root crops are con- cerned, the yield of nitrogen, though it declined very much, was greater at first, and on the average, than in the case of the cereals.
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