Six Lectures on the Investigations at Rothamsted Experimental Station Delivered Under the Provisions of the Lawes Agricultural Trust: Before the ... at Washington, D. C., August 12-18, 1891 - Couverture souple
Synopsis
Excerpt from Six Lectures on the Investigations at Rothamsted Experimental Station Delivered Under the Proions of the Lawes Agritural Trust: Before the Association of American Agritural Colleges and Experiment Stations at Washington, D. C., August 12-18, 1891
The active principle of a number of substances was being discovered at this time, and in order to make these substances I sowed on my farm poppies, hemlock, hen bane, colchicum, belladonna, etc. Some of these are still growing about the place. Dr. Thomson had suggested a process for making calomel and corrosive sublimate by burning quicksilver in chlorine gas. I undertook to carry out the process on a large scale and wasted a good deal of time and money on a process which was in fact no improvement on the process then in use. Failures, however, have their value, as I found out afterwards. All this time Ihad the home farm, of about 250 acres, in hand. I entered upon it in 1834. Farmers were suffering from the abundance of the crops, and wheat, though rigidly protected, was very low in price. For three or four years I do not remember that any connection between chemistry and agriture passed through my mind; but the remark of a gentleman (lord Dacre), who farmed near me, who pointed out that on one farm bone was invaluable for the turnip cr0p, and on another farm it was useless, attracted my attention 3. Good deal, especially as I had spent a good deal of money on bone without success. Somewhere about this time a drug broker inthe city of London asked me Whether I could make any use of precipitated gypsum and spent animal charcoal, both of which substances held at the time no market value. Some tons of these were sent down,_and as sulphuric acid was largely used by me in making chlorine gas, the combination of the two followed.
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Six Lectures on the Investigations at Rothamsted Experimental Station Delivered
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Paperback. Etat : New. Print on Demand. This book is a collection of lectures on investigations carried out at the Rothamsted Experimental Station, delivered by famed scientist Robert Warington before the Association of American Agricultural Colleges and Experiment Stations in Washington in the year 1891. As the first series of such lectures, the author had the privilege of reading all of them to the man who inspired their creation, Sir John Bennet Lawes, prior to delivery. Sir Lawes played a pivotal role in establishing the trust through which Rothamsted passed under its new management, and also generously provided some hitherto unpublished results for inclusion in the lectures. Given the importance of nitrogenous matter in determining soil fertility and crop yields, a primary focus of these lectures is to convey the author's significant research into this topic. Warington examines the nature of this matter, its origins, and the intricate interplay of factors that lead to either its increase or decrease in the soil. Historically, it was the development of artificial fertilizers by the author and Sir Lawes, beginning around 1840, that instigated the comprehensive study of soil chemistry and plant nutrition that continues at Rothamsted to this day. However, this book conveys findings that are still relevant to modern agriculture, examining in granular detail the exchange between the atmosphere, plants, and soil that makes nitrogen available to plants and that can significantly impact crop health and productivity. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. N° de réf. du vendeur 9780428144647_0
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