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Tree Care
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46 items
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Assessing Pruning Wound Damage
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To better understand and minimize damage to trees during pruning, an assessment system was developed. This system is based upon long-term tree functions and ...
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Collect Field Samples and Identify the Oak Wilt Fungus in the Laboratory
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Oak wilt is a serious disease that infects many species of oak. It is responsible for the death of thousands of oak trees in forests, woodlots, and home ...
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Estimating Wind Forces on Tree Crowns
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Wind and gravity are the two primary forces acting upon tree crowns. The structural resistance to these forces by the tree require complex allocation ...
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Fertilizing Landscape Trees and Shrubs
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Tree and shrub fertilization is especially important in urban and suburban areas of Virginia where soils have been altered due to construction. These urban ...
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Fertilizing Trees and Shrubs
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In urban or suburban neighborhoods, trees and shrubs often need fertilizing. Modern home- building methods create adverse growing conditions for plants. Often, ...
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Flooding and its Effects on Trees
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The 1993 floods along the Missouri and Mississippi Rivers and their tributaries have caused tremendous losses in terms of human life, homes, businesses and ...
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Fungicide Injection to Control Dutch Elm Disease: Understanding the Options
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In some situations, injecting trees with fungicides is an effective treatment for the management of Dutch elm disease (DED). Several injection products are on ...
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Grow and Maintain a Healthy Birch Tree
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In many landscapes, birch trees begin to decline within a few years, and many trees die well before reaching maturity. A healthy birch tree should be able to ...
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Gypsy Moth Damage
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The gypsy moth is the most important defoliating insect of hardwood trees in the Eastern United States. Since the turn of the century, millions of dollars have ...
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How to Diagnose Black Walnut Damage
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Black walnut trees, like all other plants, are susceptible to a variety of injuries that reduce or destroy their usefulness. The first step in preventing or ...
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How to Save Dutch Elm Diseased Trees By Pruning
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Dutch elm disease (DED), caused by the fungus, Ceratocystis ulmi, is the most devastating shade tree disease in the United States. Healthy elms can become ...
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Identify and Manage Dutch Elm Disease
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Because elm is so well-suited to urban environments, it continues to be a valued component of the urban forest despite the losses from DED. The challenge ...
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Identify, Prevent, and Control Oak Wilt
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Oak wilt is an aggressive disease that affects many species of oak (Quercus spp.). It is one of the most serious tree diseases in the eastern United States, ...
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Maintaining Tree/Turfgrass Associations: A Plant Health Care Approach
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The common association of trees and turf in landscapes is plagued by competition for scarce water, nutrient, and sunlight resources. In the following article ...
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Making Nitrogen Available to Trees
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Nitrogen affects the molecular interactions, compound shapes and functions, and the chemical symmetry of life-maintaining materials. In ecosystems, nitrogen is ...
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Managing Trees and Turfgrasses
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Trees and turfgrasses commonly share the same landscape. Both require space, light, water, air, essential nutrients, and the appropriate temperature for ...
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Methods for Root Control
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There has never been a time with more innovative tools and techniques available for minimizing infrastructure damage exacerbated by tree root growth. This ...
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Mulching for a Healthy Landscape
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For as long as trees have grown in forests, leaves and needles have fallen to the ground and formed a natural protective layer over the soil. This same ...
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Nitrogen Prescriptions for Trees
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Supplemental nitrogen fertilization should be treated as a fined-tuned, carefully considered, constantly modified, whole tree prescription process. The whole ...
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Oak Decline
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Periodic occurrences of decline and death of oaks over widespread areas have been recorded since 1900. These outbreaks, variously named oak decline, oak ...
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Oak Wilt
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Oak wilt, caused by the fungus Ceratocystis fagacearum, kills oak trees. It has been found in 21 States, with considerable damage occurring in the Midwest. It ...
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Plant Trees Right!
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Getting trees started correctly in your yard, along streets or in a park is critical to long tree life, easy care and low-cost maintenance. One way to ensure ...
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Power Lines and Trees
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This publication discusses the dangers of trees growing too close to power lines and methods for managing the problem.
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Professional Arboriculture: Training Young Trees
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The liability risks identified in mature trees can be easily corrected in young trees.
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Pruning
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Educational materials containing pruning information
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Pruning deciduous Trees and Shrubs
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Pruning is essential for attractive, healthy trees and shrubs and improves the quality of flowers, fruit, and foliage. The best way to avoid difficult pruning ...
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Pruning Effects on Tree Growth: Growth Regulation Consequences
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This publication is a synthesis of the tree growth regulation and correlation literature. General processes and systems presented here represent educational ...
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Pruning Forest Trees
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The most common reasons for pruning trees in plantations or woodlands are to maintain a single central leader, repair storm damage, or promote clear trunks or ...
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Pruning Ice-Damaged Trees
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A full discussion of recovering from ice storm damage to trees: assessment of damage, repairs, removal, tools, leader replacement, straightening bent trees, ...
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Pruning shade trees in the landscape
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Pruning is a double-edged sword, either helping or hurting according to if, where, when, how, and why it is applied. When properly executed, a variety of ...
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