Download or read book Growing Plants Without Soil for Experimental Use Classic Reprint written by M. Blankendaal and published by Forgotten Books. This book was released on 2017-10-30 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Growing Plants Without Soil for Experimental Use In contrast, our objective has been to produce Vigorous, healthy, uniform plant material in regulated environments for experimental purposes. This publication is intended for those with some knowledge of plants who want to grow one or more species for experimental purposes, for demonstra tions in schools, or for science projects where limited facilities are available. Techniques and equipment are described that are used at the Metabolism and Radiation Research Laboratory, Fargo, N. Dak., to raise crop and weed species in the absence of soil for experiments in which pesti cides and their metabolites are applied to plants or plant parts, often in radioactive form. Some of the techniques have been adapted specifically for use with radioactive tracers, where consideration must be given to the absorptive properties of the containers and their disposability or ease of decontamination. 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.
Download or read book Growing Plants Without Soil for Experimental Use written by and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growing Plants Without Soil for Experimental Use written by and published by . This book was released on 1972 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growing Plants Without Soil for Experimental Use written by Estados Unidos Agricultural Research Service and published by . This book was released on 1972 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Water culture Method for Growing Plants Without Soil written by Dennis Robert Hoagland and published by . This book was released on 1950 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growing Plants Without Soil for Experimental Use written by M. Blankendaal and published by . This book was released on 1972 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is intended for those with some knowledge of plants who want to grow one or more species for experimental purposes, for demonstrations in schools, or for science projects where limited facilities are available.
Download or read book Growing Plants Without Soil by the Water culture Method written by California Agricultural Experiment Station and published by . This book was released on 1938 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Tree Planting in the Plains Classic Reprint written by Charles A. Keffer and published by Forgotten Books. This book was released on 2017-10-13 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Experimental Tree Planting in the Plains The experimental plantings herein described in detail are given not only as a record Of the beginnings Of an important work, but as indi cating what are believed to be useful mixtures Of trees for planting in the West. Sufficient time has not elapsed, even in the Oldest plantings described, for final conclusions to be drawn; but the notes on kinds will be found of interest in connection with the experiments, and the whole is believed to afford a basis for selection Of trees for the various States included in the treeless area. While this bulletin has to do primarily with Western planting, it may be found a safe guide in many directions for forest planting within the timbered regions Of the country, especially as to general principles involved. Experiments in planting in cut-over lands in the pineries Of Minnesota and Pennsylvania have been begun by the Department, but are not yet sufficiently advanced to warrant even a progress report. 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.
Download or read book Experiments with Plants and Soils in Laboratory Garden and Field Classic Reprint written by Frank E. Edwards and published by Forgotten Books. This book was released on 2017-10-27 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Experiments With Plants and Soils in Laboratory, Garden, and Field It is hoped that the teacher may find the exercises especially help ful as supplementary work in general science, physical geography, or botany. To the end that greater progress may be made in agricultural teaching we would appreciate suggestions from teachers as to their experience in using the exercises. 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.
Download or read book Growing Plants Without Soil hydroponic written by Queensland. Horticulture Branch and published by . This book was released on 1975 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Waste Bark on Plant Growth Classic Reprint written by Stuart Dunn and published by Forgotten Books. This book was released on 2018-02-28 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Influence of Waste Bark on Plant Growth M AN Y pulp and paper manufacturers, including the Brown Company, Berlin, New Hampshire, have to dispose of several tons of fresh bark produced at the mill every day. Present practice is to truck it away and dump it. This necessitates the use of trucks, grading equipment and labor. Experiments, therefore, were started in an effort to discover, if possible, a profitable outlet for waste bark, including possible benefits to agriculture through soil improvement. A search of the literature reveals that very little work has been done on the effects of bark from pulpwood on soil and plants. Very little has been published on the subject. Rettie and Simmons (6) report that water-soaked bark, as it comes from the barking drums, contains upwards of 80 percent moisture. In this condition the fuel value is almost nil. Other reviews (5) indicate that bark may have possible industrial uses as well as soil building potentialities. Studies with sawdust (1, 3, 4, 7) applied either directly to soil or as compost show that when well decomposed it may in either case benefit plant growth. The experimental work with bark may be divided into two parts: (1) that dealing with greenhouse pot and bench cultures, and (2) field plot trials, and will be considered in that order. 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.
Download or read book Growing Plants Without Soil written by Lynn Ellen Doxon and published by . This book was released on 1990 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Relation of Lime and Magnesia to Plant Growth written by Oscar Loew and published by Forgotten Books. This book was released on 2018-09-14 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Relation of Lime and Magnesia to Plant Growth: I. Liming of Soils From a Physiological Standpoint; II. Experimental Study of the Relation of Lime and Magnesia to Plant Growth Although for several reasons the burnt lime is superior to carbonate of lime, and even in some cases mentioned can not be replaced by the latter, still there are instances where finely pulverized carbonate of lime can be applied directly with great success, especially on sandy soil.-1 In many other cases the sulphate of lime (gypsum) is the most favorable form, especially when the amount of sulphates in the soil is very small, it often sinking, far below per cent. 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.
Download or read book A New Garden Ethic written by Benjamin Vogt and published by New Society Publishers. This book was released on 2017-09-01 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a time of climate change and mass extinction, how we garden matters more than ever: “An outstanding and deeply passionate book.” —Marc Bekoff, author of The Emotional Lives of Animals Plenty of books tell home gardeners and professional landscape designers how to garden sustainably, what plants to use, and what resources to explore. Yet few examine why our urban wildlife gardens matter so much—not just for ourselves, but for the larger human and animal communities. Our landscapes push aside wildlife and in turn diminish our genetically programmed love for wildness. How can we get ourselves back into balance through gardens, to speak life's language and learn from other species? Benjamin Vogt addresses why we need a new garden ethic, and why we urgently need wildness in our daily lives—lives sequestered in buildings surrounded by monocultures of lawn and concrete that significantly harm our physical and mental health. He examines the psychological issues around climate change and mass extinction as a way to understand how we are short-circuiting our response to global crises, especially by not growing native plants in our gardens. Simply put, environmentalism is not political; it's social justice for all species marginalized today and for those facing extinction tomorrow. By thinking deeply and honestly about our built landscapes, we can create a compassionate activism that connects us more profoundly to nature and to one another.
Download or read book A Study of the Sulphur Supply of Soils and Its Relation to Plant Growth Classic Reprint written by J. Stanley Cobb and published by Forgotten Books. This book was released on 2018-09-08 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A Study of the Sulphur Supply of Soils and Its Relation to Plant Growth This knowledge of the large amounts of sulphur removed from the soil by crepe has led to investigations of the possibility of a deficiency of sulphur in the 8011. Hart and petersen published the first important work in this country and other experiment sta tions have since made investigations. 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.
Download or read book Moisture Content and Physical Condition of Soils Classic Reprint written by Frank K. Cameron and published by Forgotten Books. This book was released on 2016-12-20 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Moisture Content and Physical Condition of Soils One particular water content has been given special consideration. It is perfectly well known to agriculturists generally and greenhouse men especially that there is a particular water content (or perhaps a more or less narrow range of water content) differing with each soil at which plants grow best, other conditions being the same. This is popularly known as the optimum water content, and is supposed to be that content from which plants draw most readily their needed supply; in other words, the Optimum water content is supposed to be determined by the physiological necessities of the plant rather than by the physical properties of the soil. There are difficulties, however, for which this view fails to offer sufficient and satisfactory explana tion. Plants can do quite well in soils containing considerably less than the optimum water content, other conditions being favorable. That is to say, there is no decided or sharp falling off in the plant growth corresponding with a lowering of the water content until the drought limit is approached, a limit generally much below the Optimum; and, on the other hand, there is no especial difficulty in carrying some of our common crops to a satisfactory maturity in water cultures. The investigation described in the following pages Shows conclusively not only that physical condition and the several properties on which it depends have an intimate relation with the water content of the soil, but that there is marked accentuation in these properties at a critical water content; and that this critical con tent is identical with the optimum water content. The moisture penetration curve shows a minimum force required for penetration at the optimum water content; the moisture-apparent Specific gravity curve shows a minimum point at the Optimum water content; the curves for evaporation show a marked difference in the rate of evapo ration above and below the optimum water content. It is apparent, therefore, that the true significance of optimum water content is that particular content at which the soil can be put into the best possible condition for plant growth. The plant can then best draw its needed water from the soil because all the other factors making for good growth are also at their best. Moreover, an increase in water content in excess of the optimum generally produces a greater detrimental effect on the plant than a decrease below the optimum. 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.
Download or read book Formaldehyde as a Stimulant to Plant Growth written by Linus Hale Jones and published by Forgotten Books. This book was released on 2017-10-27 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Formaldehyde as a Stimulant to Plant Growth: Thesis That a very small quantity of formaldehyde (1 to is intensely poisonous to plants is set forth by Bokorny This poisonous factor is well known and practical use is made of it in processes of disinfection and preservation. That it can act directly as a stimulant is the object of the experiment al work bf this paper. Indirect stimulation is well known, but little or no attention has been paid to the direct influ ence of this chemical on the growth of the plant. 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.
