Download or read book Pear Psylla Psylla Pyricola Forester written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Susceptibility to Dust and Spray Mixtures of the Pear Psylla Psylla Pyricola F rster written by Frederick Zeller Hartzell and published by . This book was released on 1925 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Distribution of Pear Psylla Psylla Pyricola Foerster and Honeydew in Bartlett Pear Trees written by Martin George Kers and published by . This book was released on 1983 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Bibliography of Psylla Homoptera Psyllidae on Pear Trees written by G. J. Fields and published by . This book was released on 1981 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pear Psylla Psylla Pyricola Foerster written by Canada. Department of Agriculture and published by . This book was released on 1981 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies on the Susceptibility of Pear Trees to Pear Psylla Psylla Pyricola Foerster Homoptera written by Juan F. F. Chang and published by . This book was released on 1977 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Injury Level of the Pear Psylla Psylla Pyricola Forster and a Discrete Time Model of a Pear Psylla predator Interaction written by Jay Finis Brunner and published by . This book was released on 1975 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Pear Psylla and the New York Plum Scale written by Mark Vernon Slingerland and published by . This book was released on 1896 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pear Psylla Integrated Pest Management written by Louis Nottingham and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pear psylla (Cacopsylla pyricola [Foerster] [Hemiptera: Psyllidae]) is an important pest of pear in Washington. Honeydew produced by pear psylla causes fruit russet, and serious infestations can stunt and defoliate trees. Pear psylla likely arrived in the United States along with shipments of pear nursery stock from western Europe. It was first found in Connecticut in 1832 and spread to Washington State by 1939. Within a few years it became a serious pest throughout all pear growing areas in the Pacific Northwest.

Download or read book Laboratory and Field Studies on the Seasonal Forms of Pear Psylla Psylla Pyricola F rster in Northern California written by Tim Tun Yuey Wong and published by . This book was released on 1966 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Some Aspects of the Ecology of the Pear Psylla written by Robert Louis Sisson and published by . This book was released on 1962 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pear Psylla Psylla Pyricola Foerster written by Canada. Agriculture Canada and published by . This book was released on 1981 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Tree Nitrogen on Pear Psylla Psylla Pyricola Foerster written by Douglas Goode Pfeiffer and published by . This book was released on 1982 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Pear tree Psylla written by Mark Vernon Slingerland and published by . This book was released on 1892 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical and Behavioral Ecology of the Pear Psylla Cacopsylla Pyricola F rster Hemiptera Psyllidae written by Robert Lamarr Brown and published by . This book was released on 2008 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Pear Psylla Populations 1977 79 written by Robert Eaton Fye and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Bibliography of Psylla Homoptera Psyllidae on Pear Trees written by and published by . This book was released on 1981 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: