Download or read book Biology and Control of the Birch Leaf mining Sawfly written by H[enry] B[yron] Peirson and published by . This book was released on 1936 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parasites of the Birch Leaf mining Sawfly Phyllotoma Nemorata written by Philip Berry Dowden and published by . This book was released on 1941 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological Control of the Ambermarked Birch Leafminer Profenusa Thomsoni Hymenoptera Tenthredinidae in Alberta written by Scott Cameron Digweed and published by Northern Forestry Centre. This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Holarctic ichneumonid parasitoid Lathrolestes luteolator (Gravenhorst) was found attacking Profenusa thomsoni (Konow), an introduced birch-leafmining sawfly, in Edmonton, Alberta. This appears to be a recently evolved host-parasitoid association in Alberta. Populations of L. luteolator increased dramatically relative to those of P. thomsoni as the sawfly declined from epidemic to low levels between 1992 and 1995, after a sustained outbreak beginning with its earliest local detection in the early 1970s. The only previously recorded host of L. luteolator that occurs in Alberta is the tenthredinid Caliroa cerasi L.; however, L. luteolator was not associated with a population of C. cerasi sampled during 1995. Sampling at several locations in Alberta, Saskatchewan, and Ontario showed that L. luteolator is currently associated with populations of P. thomsoni throughout Canada. Further study is required to determine whether L. luteolator is involved in regulating populations of P. thomsoni at the present low levels observed in central Alberta.

Download or read book The White Birch Leaf mining Sawfly in New York Forests written by Robert Douglas Glasgow and published by . This book was released on 1931 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin written by and published by . This book was released on 1970 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Birch Leaf mining Sawflies in Alberta Hymenoptera Tenthredinidae written by J. A. Drouin and published by Northern Forest Research Centre. This book was released on 1984 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observations on the Birch Leaf Mining Sawfly written by Henry Byron Peirson and published by . This book was released on 1929 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Birch Leaf Mining Sawfly written by Roger Boynton Friend and published by Forgotten Books. This book was released on 2018-02-25 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Birch Leaf-Mining Sawfly: Fenusa Pumila Klug Ripper (1931) has published a short paper on the species in which the manner Of feeding is briefly described. The writer (friend, 1931) has given a brief report of the life cycle. 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 Control of the Red Oak Leaf mining Sawfly Profenusa Alumna MacG Hymenoptera Tenthredinidae written by George A. LaBonte and published by . This book was released on 1984 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Parasites of the Birch Leaf mining Sawfly Phyllotoma Nemorata written by Philip B. Dowden and published by . This book was released on 1941 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Leaf Miners written by and published by . This book was released on 1985 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory and Practice of Biological Control written by C.B. Huffaker and published by Elsevier. This book was released on 2012-12-02 with total page 811 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Theory and Practice of Biological Control covers conventional biological control achievement in the major crop types and in public health problems. Composed of five sections encompassing 28 chapters, this book discusses the basic information concerning developments in other biologically based alternatives to chemical pesticides. The first two sections discuss the philosophy, theory, scope, history, and the biological and ecological bases of biological control. These sections also deal with the impact of predators and the host relationships of parasitoids and pathogens. The following section presents the methodological aspects of biological control. Discussions on the variability of natural enemies as encountered in biological control work; the fitness of individuals and populations; the ways fitness is being or can be influenced by importation procedures; and the ability of imported natural enemies to adapt to the new environment are included. The fourth section outlines the accomplishments of conventional biological control in various types of crops, forests, and public health areas. Lastly, the various components of integrated pest control other than conventional biological control that forms the essential ways used in the integrated control approach are covered in the last section of the book. This book is an ideal source for plant pathologists and researchers, microbiologists, parasitologists, and public health professionals.

Download or read book Birch Leaf Mining Sawflies in Albreta Hymenoptera Tenthredinidae written by Northern Forest Research Centre (Canada) and published by . This book was released on 1984 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by Maine. Forest Commissioner and published by . This book was released on 1923 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Birch Leaf mining Sawfly Fenusa Pumila Klug written by Roger Boynton Friend and published by . This book was released on 1933 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Cherry and Hawthorn Sawfly Leaf miner written by Percival John Parrott and published by . This book was released on 1915 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Annotated List of the Important North American Forest Insects written by and published by . This book was released on 1930 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigations by the United States Government of the insects affecting forest trees, forest products, and shade trees are centered in the division of forest insects of the Bureau of Entomology. The investigations carried on by the division are grouped for administrative convenience into projects, the most important of which are briefly described in the following paragraphs.