Download or read book Some Diseases of New England Conifers written by Hermann Von Schrenk and published by . This book was released on 1900 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Diseases of New England Conifers written by Hermann Von Schrenk and published by Forgotten Books. This book was released on 2017-11-24 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Some Diseases of New England Conifers: A Preliminary Report Very little attention has been paid to the study of diseases of forest trees in the United States up to this time, and the reasons are Obvious enough. Up to within a few years the supply Of standing timber of all kinds has been so large that a few diseased trees, more or less, scat tered over wide areas were Of little account. The lumberman cut down the sound trees and paid no attention to such as he recognized to be of inferior value. The situation has changed within the last decades, and a wide-felt demand has arisen among all classes of people for a more economical and rational treatment of the existing forest lands, and for reestablishing forests on denuded areas. In the primeval forest the trees diseased because of fungous or insect attack were ignored. They were few in comparison with sound trees, and the price of a single tree was very low. At the present time, with a marked appreciation in the value Of timber, the agencies which injure trees for timber are of more immediate interest to the owners of woodlands. At this time the extent to which insects and fungi destroy trees can only be guessed at. Their work of destruction goes on silently here and there in the forest, and does not attract the attention of the casual Observer as do careless lumbering or forest fires. If the dead and dying trees in a forest could be collected, they would represent a con siderable percentage of the total forest. Forest fires are already not so common as they used to be, and the lumberman of today is beginning to understand that more can be realized from a given forest tract by rational treatment than by indiscriminate cutting. Insects and fungi, and other harmful agencies Of less importance, are being studied with the aim of arriving at a more complete understanding Of their manner of working. 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 Some Diseases of New England Conifers written by Hermann Von Schrenk and published by . This book was released on 1900 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book SOME DISEASES OF NEW ENGLAND C written by Hermann 1873-1953 Von Schrenk and published by . This book was released on 2016-08-29 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diseases of Pacific Coast Conifers written by Robert V. Bega and published by . This book was released on 1978 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Note written by and published by . This book was released on 1902 with total page 1452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compendium of Conifer Diseases written by Everett M. Hansen and published by . This book was released on 2018 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Producing Christmas trees is big business. Every year, growers in the United States and Canada deliver 30 to 40 million trees to consumers, earning $2 billion in revenue. Growers in Europe produce an additional 110 million trees, earning $1.64 billion. To prepare for future crops, growers also plant up to three times as many trees as they harvest every year. Bringing each crop to market involves years of intensive management. The critical information needed to manage diseases and disorders of all types of conifer trees is provided in Compendium of Conifer Diseases, Second Edition. Written by 102 experts from 18 countries, this new edition presents the modern world of forest pathology. Forests today grow under increasing stress from an ever-growing human population, newly identified and invasive species of pathogens, and a changing climate. And since publication of the first edition of this compendium in 1997, diagnostic tools have evolved considerably, enabling more precise identification of pathogens, greater understanding of population genetics, and better understanding of evolutionary relationships among various species. All of these factors are addressed in the new compendium.

Download or read book Manual of Plant Diseases written by Frederick De Forest Heald and published by . This book was released on 1926 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symptoms of disease in plants; Non-parasitic diseases; Diseases due to deficiences of food materials in the soil; Diseases due to excesses of soluble salts in the soil; Diseases due to unfavorable water relations; Diseases due to improper air relations; Diseases due to high temperatures; Diseases due to low temperatures; Diseases due to unfavorable light light relations; Diseases due to manufacturing or industrial processes; Diseases due to control practices; Virus and related diseases; Parasitic diseases; Bacterial diseases of plants; Diseases due to slime molds; The conditions of a fungus in or on the substratum; Diseases due to downy mildews and allies; Diseases due to pondscum parasites; Diseases due to black molds and allies; Diseases due to leaf curls and related fungi; Diseases due to cup fungi and allies; Diseases due to powdery mildews and allies; Diseases due to sphere fungi and allies; Diseases due to imperfect fungi; Diseases due to smut fungi; Diseases due to rust fungi; Diseases due to palisade fungi and allies; Parasitic seed plants and the troubles they cause; Nematodes and the diseases they cause.

Download or read book Two Fungous Diseases of the White Cedar written by John William Harshberger and published by . This book was released on 1902 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report s written by and published by . This book was released on 1918 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cultural Criteria for the Distinction of Wood destroying Fungi written by Clara Winifred Fritz and published by Dominion of Canada, Honorary Advisory Council for Scientific and Industrial Research. This book was released on 1924 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Briquetting of Lignites written by Robert Alexander Ross and published by Dominion of Canada, Honorary Advisory Council for Scientific and Industrial Research. This book was released on 1918 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book M moires Et Comptes Rendus de la Soci t Royale Du Canada written by Royal Society of Canada and published by . This book was released on 1923 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1914 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report written by Vermont Agricultural Experiment Station and published by . This book was released on 1916 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pamphlets on Forestry in Vermont written by and published by . This book was released on 1914 with total page 878 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report Vermont Agricultural Experiment Station Burlington written by Vermont Agricultural Experiment Station and published by . This book was released on 1916 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Condensed outlines of articles published in Reports 1-19, Bulletins 1-133, 1887-1907, [by Joseph L. Hills], "in no. 20 p. 387-505.