Dry Farming in Relation to Rainfall and Evaporation (Classic Reprint)

Dry Farming in Relation to Rainfall and Evaporation (Classic Reprint) PDF

Author: Lyman J. Briggs

Publisher: Forgotten Books

Published: 2017-11-20

Total Pages: 80

ISBN-13: 9780331532258

DOWNLOAD EBOOK →

Excerpt from Dry Farming in Relation to Rainfall and Evaporation Fig. 1. - Chart showing the distribution of the annual rainfall in the dry-farming sections of the United States. 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.

Dry-Farming : A System of Agriculture for Countries under a Low Rainfall

Dry-Farming : A System of Agriculture for Countries under a Low Rainfall PDF

Author: John Andreas Widtsoe

Publisher: Good Press

Published: 2021-05-19

Total Pages: 210

ISBN-13:

DOWNLOAD EBOOK →

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.

Dry-Farming

Dry-Farming PDF

Author: John Andreas Widtsoe

Publisher: CreateSpace

Published: 2015-03-23

Total Pages: 158

ISBN-13: 9781502921383

DOWNLOAD EBOOK →

"[...] 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[...]".

Lanterna Rally - Theme by Grace Themes