Control of Insect Damage to Black Spruce Seed Cones with Neem
نویسندگان
چکیده
منابع مشابه
Arboreal Seed Removal and Insect Damage in Three California Oaks
We investigated arboreal removal and insect damage to acorns in an undisturbed oak woodland in central coastal California. Arboreal seed removal was determined for four to eight individual Quercus lobata trees over a period of 14 years by comparing visual estimates of the acorn crop with the number of acorns caught in seed traps. Insect damage was assessed by sampling acorns from trees of all t...
متن کاملINSECT FAUNA OF CONIFEROUS SEED CONES: Diversity, Host Plant Interactions, and Management
Tree reproductive structures-pollen and seed cones, or microand mega sporangia-represent an extremely rich source of food for many animals (166). Although some species exploit pollen cones (189), in this review we deal exclusively with those exploiting seed cones prior to seed dispersal. Insects are considered the most important seed predators during the predispersal phase of seed development ...
متن کاملBinderless Panels Made with Black Spruce Bark
The bark of black spruce was thermo-mechanically refined and used to manufacture binderless bark-based fiberboard with various pressing temperatures, times, and panel structures in order to utilize an abundant bark resource for a better value-added application. The test results indicated that it is technically feasible to manufacture binderless fiberboard with refined black spruce bark through ...
متن کاملLight-energy processing and freezing-tolerance traits in red spruce and black spruce: species and seed-source variation.
Red spruce (Picea rubens Sarg.) and black spruce (Picea mariana (Mill.) B.S.P.) are genetically and morphologically similar but ecologically distinct species. We determined intraspecific seed-source and interspecific variation of red spruce and black spruce, from across the near-northern margins of their ranges, for several light-energy processing and freezing-tolerance adaptive traits. Before ...
متن کاملSeed dressings to control slug damage in oilseed rape.
Slugs are major pests of oilseed rape that are poorly controlled by conventional bait pellets. A series of laboratory experiments investigated the potential of seed-dressings to control slug damage in this crop. Four compounds: metaldehyde, methiocarb, cinnamamide and 3,5-dimethoxycinnamic acid (DMCA) were tested at a range of doses for phytotoxicity and ability to reduce damage by Deroceras re...
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ژورنال
عنوان ژورنال: Northern Journal of Applied Forestry
سال: 1997
ISSN: 0742-6348,1938-3762
DOI: 10.1093/njaf/14.1.40