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Inorganic Plant Poisons Stim
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Book Synopsis Inorganic Plant Poisons and Stimulants by : Winifred Elsie Brenchley
Download or read book Inorganic Plant Poisons and Stimulants written by Winifred Elsie Brenchley and published by Theclassics.Us. This book was released on 2013-09 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 edition. Excerpt: ... CHAPTER VIII CONCLUSIONS In the foregoing chapters a very limited number of plant poisons have been considered, yet there is sufficient evidence to show that even these few differ considerably in their action upon plant-life. This action is most variable, and it is impossible to foretell the effect of any substance upon vegetative growth without experiments. The degree of toxicity of the different poisons is not the same, and also one and the same poison varies in the intensity and nature of its action on different species of plants. While certain compounds of copper, zinc and arsenic are exceedingly poisonous, compounds of manganese and boron are far less deleterious, so that a plant can withstand the presence of far more of the latter substances than of the former. Again, the tested compounds of copper, zinc and arsenic do not seem to stimulate growth, even when they are applied in the smallest quantities, whereas very dilute solutions of manganese and boron compounds decidedly increase growth. But, differentiation occurs even in this stimulative action, for while manganese is the more effective in stimulating barley, boric acid is far more potent for peas, the shoots being particularly improved. A consideration of the experimental work that has been done on this subject of poisoning and stimulation leads one to the inevitable conclusion that it is not true to maintain the hypothesis that all inorganic plant poisons act as stimulants when they are present in very small quantities, for while some poisons do increase plant growth under such conditions, others fail to do so in any circumstances. It is probable that what has been found true with the few substances tested would prove to be similarly true over a much wider range of poisons, ..
Book Synopsis Inorganic Plant Poisons and Stimulants by : Winifred Elsie Brenchley
Download or read book Inorganic Plant Poisons and Stimulants written by Winifred Elsie Brenchley and published by Createspace Independent Publishing Platform. This book was released on 1914 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last century great and widespread changes have been made in agricultural practice-changes largely associated with the increase in the use of artificial fertilisers as supplements to the bulky organic manures which had hitherto been used. The value of certain chemical compounds as artificial manures is fully recognised, yet many attempts are being made to prove the value of other substances for the same purpose, with a view to increase in efficiency and decrease in cost. The interest in the matter is naturally great, and agriculturists, botanists and chemists have all approached the question from their different standpoints. In the following pages an attempt is made to correlate the work that has been done on a few inorganic substances which gave promise of proving useful in agricultural practice. Much of the evidence put forward by different workers is conflicting, and it is clear that no definite conclusions can yet be reached. Nevertheless, examination of the evidence justifies the hope that results of practical value will yet be obtained, and it is hoped that the analysis and coordination of the available data put forward in this book will aid in clearing the ground for those investigators who are following up the problem from both the academic and the practical standpoints.
Book Synopsis Inorganic Plant Poisons and Stimulants (Classic Reprint) by : Winifred E. Brenchley
Download or read book Inorganic Plant Poisons and Stimulants (Classic Reprint) written by Winifred E. Brenchley and published by Forgotten Books. This book was released on 2017-10-12 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Inorganic Plant Poisons and Stimulants Ever since the physiological side Of botany began to emerge from obscurity, the question Of the relation between the nutrition and the growth of the plant has occupied a foremost position. All kinds of theories, both probable and improbable, have been held as to the way in which plants obtain the various components of their foods. But quite early in the history of the subject it was acknowledged that the soil was the source Of the mineral constituents of the plant food, and that the roots were the organs by which they were received into the plant. A new chapter in the history of science was begun when Liebig in 1840 first discussed the importance of inorganic or mineral substances in plant nutrition. This discussion led to a vast amount of work dealing with the problem of nutrition from many points of view, and the general result has been the sorting out of the elements into three groups, nutritive, indifferent, and toxic. Thus calcium, phosphorus, nitrogen and potassium are classed as nutritive, arsenic, copper and boron as toxic, and many others are regarded as indifferent. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Synopsis INORGANIC PLANT POISONS & STIM by : Winifred Elsie Brenchley
Download or read book INORGANIC PLANT POISONS & STIM written by Winifred Elsie Brenchley and published by . This book was released on 2016-08-29 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inorganic Plant Poisons and Stimulants by : Winifred E. Brenchley
Download or read book Inorganic Plant Poisons and Stimulants written by Winifred E. Brenchley and published by . This book was released on 2017-08-31 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inorganic Plant Poisons and Stimulants, By Winifred E. Brenchley by : Winifred Elsie Brenchley
Download or read book Inorganic Plant Poisons and Stimulants, By Winifred E. Brenchley written by Winifred Elsie Brenchley and published by . This book was released on 1914 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Inorganic Plant Poisons and Stimulants written by and published by CUP Archive. This book was released on with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stimulation of Root Growth in Cuttings by Treatment with Chemical Compounds ... by : Otis Freeman Curtis
Download or read book Stimulation of Root Growth in Cuttings by Treatment with Chemical Compounds ... written by Otis Freeman Curtis and published by . This book was released on 1918 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Lancet written by and published by . This book was released on 1927 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Sugar Journal written by and published by . This book was released on 1915 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Association Medical Journal written by and published by . This book was released on 1915 with total page 1584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book British Medical Journal written by and published by . This book was released on 1915 with total page 1174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The British Medical Journal written by and published by . This book was released on 1915 with total page 1630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis University of California Publications in Agricultural Sciences by : University of California, Berkeley
Download or read book University of California Publications in Agricultural Sciences written by University of California, Berkeley and published by . This book was released on 1917 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of the Torrey Botanical Club by : Torrey Botanical Club
Download or read book Bulletin of the Torrey Botanical Club written by Torrey Botanical Club and published by . This book was released on 1927 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains proceedings.
Book Synopsis Biological Concepts and Techniques in Toxicology by : Jim E. Riviere
Download or read book Biological Concepts and Techniques in Toxicology written by Jim E. Riviere and published by CRC Press. This book was released on 2006-03-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlighting the latest advances in molecular biology, mathematical modeling, quantitative risk assessment, and biopharmaceutical development, this reference presents how current scientific applications and methods impact and revolutionize mainstream toxicological research. Presenting findings from disciplines that will impact the future of toxicol
Book Synopsis The Distribution and Activities of Bacteria in Soils of the Arid Region by : Charles Bernard Lipman
Download or read book The Distribution and Activities of Bacteria in Soils of the Arid Region written by Charles Bernard Lipman and published by . This book was released on 1912 with total page 1012 pages. Available in PDF, EPUB and Kindle. Book excerpt:
