962 resultados para Fennoscandian forests


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The State Forest Nursery welcomes the opportunity to help you with your tree planting needs. Our goal is to provide low cost, native seedlings in order to help make your tree planting successful and affordable. We strive to produce the best stock in the industry, and our staff will do everything they can to help you achieve your planting goals. We want your tree planting to be successful, so please let us know how we can help! You can contact us www.iowatreeplanting.com By planting trees today you will leave a legacy for your children and grandchildren, as well as a legacy for your home state, its people and its habitat. Let us help you leave your mark on the state you love- your children and grandchildren will thank you!

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Identifying Broadleaf Trees...A brochure on what type of broad leafs you look for when looking at trees in Iowa. Produced by the Iowa Department of Natural Resources.

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This publication is designed to help identify the most common trees found in Iowa. It is based on vegetative characteristics including leaves, fruit, and bark. It is neither complete nor without possible oversights. Separate species are grouped by similar characteristics, mainly based on type and arrangement of leaves. These groups are; awl- or scale like needles; single needles, flattened with rounded tips; single needles, square in cross section, with pointed tips; and needles in bundles or fascicles of two or more. Remember, vegetative characteristics are quite variable; use more than one specimen for comparison.

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The emerald ash borer (EAB) is a very small but very destructive beetle. Metallic green in color, its slender body measures 1/2 inch in length and 1/8 inch wide. The average adult

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A beetle from Asia, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), was identified in July 2002 as the cause of widespread ash (Fraxinus spp.) tree decline and mortality in southeastern Michigan and Windsor, Ontario, Canada. Larval feeding in the tissue between the bark and sapwood disrupts transport of nutrients and water in a tree, eventually causing branches and the entire tree to die. Tens of millions of ash trees in forest, rural, and urban areas have already been killed or are heavily infested by this pest.

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Technical Guide to Forestry Practices Manual.

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The Gypsy moth is a serious pest of trees ans shrubs. It damages the plants when the caterpillar stage eats the leaves. When there are many caterpillars, They defoliate entire trees, which can weaken and sometimes kill the trees. The gypsy moth is a notorious hitchhiker; it has been brought into Iowa on recreations vehicles and nursery stock. Learning the recognize the gypsy moth is an important part of preventing infestations and severe damage to Iowa's forests, woodlands, and urban landscapes.

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This publication is designed to help identify the most common hardwood or deciduous trees found in Iowa. It is based on vegetative characteristics including leaves, fruit, and bark. It is neither complete nor without possible oversights. Separate species are grouped by similar characteristics, mainly based on type and arrangement of leaves. Remember, vegetative characteristics are quite variable; use more than one specimen for comparison.

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In 2005, the Iowa NRCS and Iowa DNR agreed to create new groupings of soils and revise the recommendations for tree and shrub species for those soil groups in Iowa. There were several reasons for this revision: there were errors in the previous recommendations; there were new soils identified and mapped; and both agencies wanted a user-friendly system for employees and the public to use.

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Mulch helps to recreate the organic layer and soil structure of a wooded environment, which benefits your trees and shrubs... • Helps maintain even soil temperature in the roots by keeping them cool in the summer and warm in the winter. • Promotes plant growth. • Controls weeds. • Conserves soil moisture, meaning you use less water. • Improves soil structure and quality over the root area. • Protects from mechanical damage (mowers, string trimmers, etc.) • Helps beautify the new planting.