Download or read book The Poplar and Willow Borer Cryptorhynchus Lapathi L written by William Jay Schoene and published by . This book was released on 1907 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Poplar and Willow Borer Cryptorhynchus Lapathi L written by William Jay Schoene and published by . This book was released on 1907 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Poplar and willow Borer written by Eugene R. Hannon and published by . This book was released on 2017 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poplar-and-willow borer larvae burrow into stems of all ages of poplar; their galleries weaken the bole and limbs of infested plants, causing them to break when stressed by high winds. There are no chemicals available to professional integrated pest management (IPM) personnel to control this pest. Professionals need to be able to identify the pest species, avoid using infested cutting for propagation, use properly timed harvest, and recommend long-term management strategies to minimize losses to poplar-and-willow borer infestations.

Download or read book The Poplar and Willow Borer written by Robert Matheson and published by . This book was released on 1917 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Poplar and willow Borer Sternochetus Lapathi L Coleoptera Curculionidae written by John Walter Edwin Harris and published by . This book was released on 1964 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Antixenotic and Antibiotic Resistance of Hybrid Poplars to the Poplar and willow Borer Cryptorhynchus Lapathi L Coleoptera Curculionidae written by Cynthia L. Broberg and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hybrid poplar clones show varying levels of attack by Cryptorhy17chus lapathi (L.), a wood-boring weevil. I investigated olfaction, feeding, oviposition and larval survival as well as phenological and biochemical differences among four hybrid poplar clones in order to determine the underlying mechanisms of resistance. Weevils did not discriminate between resistant and susceptible clones based on olfaction in pitfall bioassays or antenna1 responses, but did discriminate against the most resistant hybrid, NM 6 (Populus nigra L. x Populus maxinzowiczii Henry), in choice and no-choice pairedtwig feeding bioassays. In addition, the most susceptible hybrid, TN 302-9 (Populus trichocarpa Torrey and Gray x P. nigra), was preferred for feeding over Salix scouleriana Barratt e.x Hooker, a preferred host in the wild. However. these feeding preferences were not consistently held, therefore resistance can only be partially based on antixenotic cues prior to oviposition. In choice and no-choice experiments involving potted or field-planted clones, oviposition occurred somewhat less frequently and abundantly on two clones with P. maximouiczii parentage. However, no larvae survived on field-planted NM 6 and only four emerged from TM 256-28 (P. tiichocarpa x P. ma.ximot̃iczii). In contrast, 50 and 140 adults emerged from the two susceptible clones, TD 52-226 (P. trichocarpa x Populus deltoides Bartram ex Marshall) and TN 302-9, respectively. Thus, resistance partially involves decreased levels of oviposition, but more significantly, antibiosis in resistant clones prevents the developnẽnt of larvae, probably in early spring. The two resistant hybrids flushed earlier, but no differences were found with respect to sap flow or bark moisture content that could explain larval mortality. Similarly, constitutive levels of nutritive compounds (sitosterol, nitrogen, linoleic and linolenic acids, and carbohydrates) were generally lower, or not significantly different, in TN 302-9. Thus, all hybrids appear nutritionally sound. TN 302-9 contained high constitutive levels of condensed tannins and catechin, but overall phenolic glycoside levels (salicin and salicortin) were similar anlong all hybrids, with the exception of one sampling date. Neither induced or constitutive polyphenol oxidase (PPO) activity nor induced levels of secondary metabolites could explain resistance. Thus, the resistant hybrids with P. rnaxirnolticzii parentage have a novel mechanism for resistance.

Download or read book Poplars and Willows written by Jud G. Isebrands and published by CABI. This book was released on 2014-02-12 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poplars and willows form an important component of forestry and agricultural systems, providing a wide range of wood and non-wood products. This book synthesizes research on poplars and willows, providing a practical worldwide overview and guide to their basic characteristics, cultivation and use, issues, problems and trends. Prominence is given to environmental benefits and the importance of poplar and willow cultivation in meeting the needs of people and communities, sustainable livelihoods, land use and development.

Download or read book The Biology and Control of the Poplar willow Borer Sternochetus Lapathi L written by Ernest James Harris and published by . This book was released on 1959 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selective Bibliography on Insects Causing Wood Defects in Living Eastern Hardwood Trees written by C. John Hay and published by . This book was released on 1981 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Guide to Insect Disease and Animal Pests of Poplars written by Roswell D. Carpenter and published by . This book was released on 1989 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by New York (State) Agricultural Experiment Station, Geneva and published by . This book was released on 1907 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coleoptera Life Histories and Economic Relations written by and published by . This book was released on 1912 with total page 1554 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Host Bibliographic Record for Boundwith Item Barcode 30112088717704 written by and published by . This book was released on 1906 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report of Analyses of Samples of Fertilizers Collected by the Commissioner of Agriculture During 1906 written by Martin John Prucha and published by . This book was released on 1906 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pamphlets on Forest Protection written by and published by . This book was released on 1910 with total page 1578 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by and published by . This book was released on 1905 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Publication written by and published by . This book was released on 1985 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: