Dry-farming; a System of Agriculture for Countries Under a Low Rainfall PDF Download
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Languages : en
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Author: John Andreas Widtsoe
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 494
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Author: John Andreas Widtsoe
Publisher: BoD – Books on Demand
ISBN: 3368336363
Category : Fiction
Languages : en
Pages : 330
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Book Description
Reproduction of the original.
Author: John Andreas Widtsoe
Publisher: CreateSpace
ISBN: 9781502921383
Category :
Languages : en
Pages : 158
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"[...] The water used by plants is almost entirely taken from the soil by the minute root-hairs radiating from the roots. The water thus taken into the plants is passed upward through the stem to the leaves, where it is finally evaporated. There is, therefore, a more or less constant stream of water passing through the plant from the roots to the leaves. By various methods it is possible to measure the water thus taken from the soil. While this process of taking water from the soil is going on within the plant, a certain amount of soil-moisture is also lost by direct evaporation from the soil surface. In dry-farm sections, soil-moisture is lost only by these two methods; for wherever the rainfall is sufficient to cause drainage from deep soils, humid conditions prevail. Water for one pound dry matter Many experiments have been conducted to determine the amount of water used in the production of one pound of dry plant substance. Generally, the method of the experiments has been to grow plants in large pots containing weighed quantities of soil. As needed, weighed amounts of water were added to the pots. To determine the loss of water, the pots were weighed at regular intervals of three[...]".
Author: John A. Widtsoe
Publisher:
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Category :
Languages : en
Pages :
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Author: John Andreas Widtsoe
Publisher: Good Press
ISBN:
Category : Fiction
Languages : en
Pages : 210
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Book Description
Written by John Andreas Widtsoe, noted author, scientist, and an academic, this work is the first attempt to gather and arrange the known facts of science in their link to the production of plants, without irrigation, in areas with very little rainfall. The needs of genuine farmers have been kept in mind, those farmers who must first understand all the regulations, before their procedures can be completely satisfactory. It is hoped that the enlarging group of dry-farm investigators will also be helped by this representation of the principles of dry-farming. Widtsoe states in the preface. "The subject is now growing so rapidly that there will soon be room for two classes of treatment: one for the farmer, and one for the technical student." This book was written with help from large libraries, and the material was drawn from the available sources of that time. Widtsoe became the director of the Agricultural Experiment Station at Utah State Agricultural College in 1900.
Author: John Andreas Widtsoe
Publisher: Nabu Press
ISBN: 9781295535101
Category :
Languages : en
Pages : 488
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Book Description
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book.
Author: John A. Widtsoe
Publisher: Forgotten Books
ISBN: 9780332203539
Category : Business & Economics
Languages : en
Pages : 476
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Excerpt from Dry-Farming a System of Agriculture for Countries Under a Low Rainfall The possibilities of dry-farming are stupendous. In the strength of youth we may have felt envi ous of the great ones of old; of Columbus looking upon the shadow of the greatest continent; of Balboa shouting greetings to the resting Pacific; of Father Escalante, pondering upon the mystery of the world, alone, near the shores of America's Dead Sea. We need harbor no such envyings, for in the conquest of the nonirrigated and nonirriga ble desert are offered as fine opportunities as the world has known to the makers and shakers of empires. We stand before an undiscovered land; through the restless, ascending currents of heated desert air the vision comes and goes. With striv ing eyes the desert is seen covered with blossoming fields, with churches and homes and schools, and, in the distance, with the vision is heard the laughter of happy children. 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.
Author: John Andreas Widtsoe a M Ph D
Publisher: Pinnacle Press
ISBN: 9781374876583
Category : Gardening
Languages : en
Pages : 240
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Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: John Widtsoe
Publisher: Createspace Independent Publishing Platform
ISBN: 9781979919104
Category :
Languages : en
Pages : 156
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Book Description
John Andreas Widtsoe demonstrates an immense knowledge of soil and farming conditions; much of the advice in this classic manual remains useful and relevant to this day. An excellent collection of knowledge is united in this guidebook, which commences by setting out the concept and core principles of dry farming. Much of the Earth is covered by land which receives only modest rainfall each year; coupled with a lack of an underground water source and/or water rights, many landowners found themselves having to grow crops with dry farming methods. Widtsoe was one such farmer, and his knowledge of the land's properties would prove decisive in his success. The properties and composition of the soil are crucial in deciding what crops to grow, making maximum use of limited water resources in an unirrigated plot by encouraging the soil's water retention, and sowing seeds with methods to maximize germination are all important aspects of running a dry farm. Together with practical chapters on these and other subjects, Widtsoe keenly explains the history and evolution of dry farming techniques. Agricultural sustainability also features; combating unpredictable conditions, and the potentially devastating effects of drought (which Widtsoe renders in the literary form of 'Drouth') are also a prominent part of this book's explanations. Overall, this text maintains a relevance even in the face of enormous technological advancements in agriculture. Much of Widtsoe's knowledge is timeless, and his lucid explanations of the building blocks of farming stand as a good primer to new small-scale farmers, or amateur enthusiasts of agriculture.
