George A. Petrides's A Field Guide to Western Trees: Western United States and PDF

By George A. Petrides

ISBN-10: 0395904544

ISBN-13: 9780395904541

Этот иллюстрированный определитель включает детальные описания 387 видов, объединенных в 6 групп по внешнему сходству. forty seven цветных вкладок и текстовые описания характеризуют особенности видов, необходимые для идентификации. Цветные фотографии и 295 карт распространения дополняют видовые описания.
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Extra resources for A Field Guide to Western Trees: Western United States and Canada

Example text

Plate 29 Phytolyma gall that has burst open releasing psyllid inside. Gall bursting is essential to release psyllid from inside because psyllids lack chewing mouth parts. xxxviii Color Plates Plate 30 Milicia seedling that has lost its leaves exposing extensive number of large galls. Color Plates xxxix Plate 31 Dr. Paul Bosu standing in provenance plantation of Milicia spp. Note high variability of diameter of saplings related to genetic resistance to Phytolyma. Plate 32 Phytolyma galls that are from highly susceptible genotypes (left two) versus galls that are from resistant or tolerant genotypes (right two).

Plate 34 Milicia excelsa growing in the shade of Gliricidia sepium. Milicia damage by Phytolyma is reduced when grown under shade as compared to when grown in full sun. Color Plates xli Plate 35 Dr. Paul Bosu in an experimental mixed plantation. Maintaining Milicia in low density in a mixed population is an effective control strategy currently under development. xlii Plate 36 Vegetation propagation of Milicia genotypes tolerant of Phytolyma. Color Plates Color Plates xliii Plate 37 Tissue culture produced seedlings of genetically resistant/tolerant Milicia seedlings.

Xlvi Color Plates Plate 42 Mango (Mangifera indica) leaves heavily infested with mango mealy bug, Rastrococcus invadens. Color Plates Plate 43 Close up of mango mealy bugs. xlvii xlviii Color Plates Plate 44 Feeding damage to bark tissue of Khaya spp. by the mahogany shoot borer Hypsipyla robusta. Color Plates Plate 45 Feeding damage to Khaya spp. shoots by the mahogany shoot borer. xlix l Plate 46 Exposed larva of mahogany shoot borer. Color Plates Color Plates Plate 47 Multiple stems caused by mahogany shoot borer attack.

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A Field Guide to Western Trees: Western United States and Canada by George A. Petrides

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