Read e-book online An illustrated guide to pruning PDF

By Edward F. Gilman

Good written and simple to appreciate, An ILLUSTRATED advisor TO PRUNING, 3rd version is a must have for an individual attracted to the pruning and upkeep of bushes. packed with up-to-date illustrations, images, and examples, this thoroughly up-to-date advisor is designed to aid readers comprehend and enforce the fitting pruning practices which are very important to constructing sustainable constitution within the first 25 years of a tree's existence. assurance encompasses a number of information regarding the demanding situations linked to pruning similar to disorder prevention, root pruning, mature tree pruning, and recovery following storms. With its easy tables, lists, and techniques, this e-book is an attractive source for horticulture, panorama and tree institutions and industries and is a average addition for botanic backyard and arboreta bookstores.

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Roots perform functions other than stability. Some growth regulators are produced in the roots. Roots take up water and elements. They also form associations with organisms, such as mycorrhizae, that can help the tree in many ways. Roots fend off diseases and insect attack, and they store some of the energy produced in the leaves. WOOD AND CANOPY Water entering roots moves to the canopy through the xylem (Figure 4-3). Xylem makes up the woody part of the tree that begins on the inside of the cambium.

On their way to the xylem, they cross the cambium. They can extend several inches or more up and down the trunks, branches, and roots. Sugars move from the phloem into the energy bank (xylem) through the rays. On healthy trees, rays are rich in starch. Improper pruning such as topping (Figure 4-4), cutting roots, flush cutting, removing large branches, and injuring the trunk and main branches can make the energy bank considerably smaller. If the bank is made smaller, less energy can be stored. This makes the tree more susceptible to attack by agents such as insects and disease.

This will keep the pruned branch smaller than the main trunk and help ensure that the protection zone and collar at the base of the branch form properly. It can also help prevent formation of included bark, a condition to avoid. These pruning techniques are described in later chapters. 36 b CHAPTER 3 FIGURE 3-6. Because bark is included in the union, these stems are not well secured to each other. The tree on the lower right was overlifted. No pruning was done to remediate the 3 codominant stems.

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