This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...for crop growth than where the calcium is not found in this form. The effect of the carbonate of lime upon the nitrogen1 compounds is to furnish a base for the acids produced in the formation of nitrates and its presence promotes that process. It probably replaces potassium in certain compounds where otherwise it would ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 Excerpt: ...for crop growth than where the calcium is not found in this form. The effect of the carbonate of lime upon the nitrogen1 compounds is to furnish a base for the acids produced in the formation of nitrates and its presence promotes that process. It probably replaces potassium in certain compounds where otherwise it would be secured with more difficulty. It insures the presence of some phosphates of lime, in which form phosphorus is more soluble than when combined with iron. The form of the manures to be used upon the soil will also depend in large measure upon the presence or absence of calcium carbonate. (See page 349.) For instance, where calcium carbonate is deficient, steamed bone or Thomas slag are more profitable than superphosphate, and nitrate of soda than sulphate of ammonium. Finally, the absence of calcium carbonate indicates the need of liming, and, if the analyses show a considerable amount of potash and phosphoric acid, but practice shows them to be somewhat deficient, it is probable that liming will be all that is necessary, and that manures carrying these Not determined in the hydrochloric acid extract. substances may be dispensed with. It must be stated, however, that there are cases for which these deductions do not hold, owing to the intervention of other factors. 134. Estimation of deficiency of ingredients.--In a soil in which the other conditions are normal, one would suppose it possible to prescribe, with some degree of accuracy, the content of certain constituents below which a deficiency exists. The use of a manure containing this constituent should therefore be expected to produce beneficial results. However, opinions differ so widely, depending, apparently, upon the soils with which the respective analysts have had to deal, that it ...
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Add this copy of The Principles of Soil Management to cart. $15.00, very good condition, Sold by The History Place rated 5.0 out of 5 stars, ships from Palestine, TX, UNITED STATES, published 1913 by The Macmillan Company.
Add this copy of The Principles of Soil Management [1909 ] to cart. $55.38, new condition, Sold by Revaluation Books rated 4.0 out of 5 stars, ships from Exeter, DEVON, UNITED KINGDOM, published 2009 by Cornell University Library.
Add this copy of The Principles of Soil Management [ 1909 ] to cart. $55.38, new condition, Sold by Revaluation Books rated 4.0 out of 5 stars, ships from Exeter, DEVON, UNITED KINGDOM, published 2009 by Cornell University Library.
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