Spruce trees tend to grow more slowly and require less pruning than pine trees. They also tend to be more tolerant of cold weather and harsh conditions. However, pine trees are generally more resistant to pests and diseases than spruce trees. Additionally, some types of pine trees, such as ...
Overwintered plants need checking for pests and disease and I tend to be ruthless and get rid of any that don’t look healthy - you don’t want problems being transferred to new plants. Remove greenhouse pests too, throwing out slugs and snails and using a greenhouse fogger, such as this...
Watch for signs of pests or disease. Discolored needles and dying branches are signs of disease in spruce trees. Remove pests from the tree by weekly doses of a strong spray of water over the center of the tree and throughout the foliage. Step 5 Cut back the main leader stem, if it ...
Ruth DS, Miller GE, Sutherland JR (1982) A guide to the common insect pests and diseases in spruce seed orchards in British Columbia. Can For Sery Publ BC-X-231 Google Scholar Schaefer PR, Hanover JW (1986) Taxonomic implications of monoterpene compounds of blue and Engelmann spruces. For...
Karst.) is a relatively demanding species (e.g. it does not tolerate drought, is very sensitive to environmental pollution, diseases and pests) compared to other conifers. It is therefore important to provide it with optimal growth conditions in the early stages of development. The la...
[Plant protection in houses and small gardens [Diseases and pests of spruces]]. [German] This booklet contains short accounts of the morphology, biology and importance of 16 species of insects that infest the cones and seed of spruce in the Sov... F Eysell - 《Landwirtschaftsblatt Weser ...
Data are also presented on phenological displacement of bud dormancy and budbreak, and associated changes in foliar amino acid concn.关键词: Sitka spruce, Diseases and pests, Conifers, Aphids 被引量: 35 年份: 1988 收藏 引用 批量引用 报错 分享 ...
Resilience and functionality of European Norway spruce forests are increasingly threatened by mass outbreaks of the bark beetle Ips typographus promoted by
Approach on Eliminate Spruce Woods of Diseases and Pests in Maixiu Forest Zone Huangnan; 浅谈黄南州麦秀林区云杉病虫害木清理 6) Picea asperata 云杉 1. Gene Differentiation in Natural Population ofPicea asperataand Sampling Strategies for Ex situ Germplasm Resource Conservation; ...
Karolewski P, Giertych MJ (1995) Changes in the level of phenols during needle development in Scots pine populations in a control and polluted environment. Eur J For Pathol 25:297–306 Article Google Scholar Kolk A, Starzyk JR (1996) The atlas of forest insect pests. Multico, Warsaw Goog...