Search results
Results from the WOW.Com Content Network
Trunk injection or endotherapy also known as vegetative endotherapy, [1] [2] [3] is a method of target-precise application of pesticides, [4] [5] [6] plant resistance activators, [7] or fertilizers [8] into the xylem vascular tissue of a tree with the purpose of protecting the tree from pests, or to inject nutrients to correct for nutrient deficiencies.
Roads, sidewalks and foundations can all suffer structural issues from tree roots. [7] Several methods of control have been attempted, from barriers to encouraging growth in desirable directs. Selection of plants with root systems that will not conflict with nearby structures is the most effective method of damage control.
Root barriers are also used to separate plant roots from each other. In particular, walnut trees secrete the chemical juglone which is toxic to other plants but the use of root barriers can prevent the yield reduction that would normally occur when walnut trees are alley cropped with maize as often occurs in the American Midwest. [3] [4]
The exact causes are not known, but in the first year the new plants will grow poorly. Root systems are weak and may become blackened, and plants may fail to establish properly. One theory is that replant disease is due to a whole menagerie of tree pathogens — fungi, bacteria, nematodes, viruses and other organisms. [1]
Prunus avium, commonly called wild cherry, [3] sweet cherry [3] or gean [3] is a species of cherry, a flowering plant in the rose family, Rosaceae. It is native to Eurasia and naturalized elsewhere. It is an ancestor of P. cerasus (sour cherry). All parts of the plant except for the ripe fruit are slightly toxic, containing cyanogenic glycosides.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Psidium cattleyanum (World Plants : Psidium cattleianum), [2] [3] commonly known as Cattley guava, strawberry guava or cherry guava, is a small tree (2–6 m (6 ft 7 in – 19 ft 8 in) tall) in the Myrtaceae (myrtle) family.
Prunus ilicifolia flowers. It is an evergreen shrub [4] or small tree approaching 15 metres (49 feet) in height, [12] with dense, hard leaves [4] (sclerophyllous foliage). The leaves are 1.6–12 centimetres (3 ⁄ 4 – 4 + 3 ⁄ 4 inches) long with a 4–25 millimetres (1 ⁄ 8 –1 in) petiole [12] and spiny margins, somewhat resembling those of the holly.