However, Aspen also reproduces sexually through wind pollination: flowers can be seen from February to March, and the male and female catkins appear on separate trees. A tree deity or tree spirit is a nature deity related to a tree. The western balsam poplar (P. trichocarpa) was the first tree whose full DNA code had been determined by DNA sequencing, in 2006.[1]. Poplars and aspens are important food plants for the larvae of a large number of Lepidoptera species. Cleaning Polychlorinated Biphenyl (PCB) Contaminated Garden Soil by Phytoremediation. Signs of aspen leaf spot are dark brown or black flecks with either yellow halos or white centers on the leaves, but leaf petioles and terminal shoots may also be affected. The scales are obovate, lobed, and fringed, membranous, hairy or smooth, and usually caducous. In India, the poplar is grown commercially by farmers, mainly in the Punjab region. When broken open, these spots release an orange liquid or powder. Although common, it rarely causes major problems. Because it spreads rapidly, it can be quite deadly. A few other diseases that can affect aspen include black canker, sooty bark canker and snake canker. [citation needed], The Odd Poplars Alley, in Iași, Romania, is one of the spots where Mihai Eminescu sought inspiration in his works (the poem "Down Where the Lonely Poplars Grow"). These spots may merge to form large black patches on the leaves. Bark eventually peels away in strips to reveal a black inner wood. [21], Poplar represents a suitable candidate for phytoremediation. Bioconversion of 2-year-old poplar grown as short rotation coppice", "Iași - the county of centuries-old trees", Shiitake growth studies performed by RMIT, https://doi.org/10.1016/j.envres.2018.03.009, "Phytoremediation of trichloroethylene with hybrid poplars", https://en.wikipedia.org/w/index.php?title=Populus&oldid=984396877, Creative Commons Attribution-ShareAlike License, G48 (grown in the plains of Punjab, Haryana, UP), w22 (grown in mountainous regions, e.g., Himachal Pradesh, Pathankot, Jammu), Poplar is widely used for the manufacture of, Poplar wood, particularly when seasoned, makes a good hearth for a, This page was last edited on 19 October 2020, at 22:00. Utah State University Extension: Pathogenic Shade Tree Diseases. In Billie Holiday's Strange Fruit, she sings "Black bodies swinging in the southern breeze/Strange fruit hanging from the poplar trees…". [15] The male flowers are without calyx or corolla, and comprise a group of four to 60 stamens inserted on a disk; filaments are short and pale yellow; anthers are oblong, purple or red, introrse, and two-celled; the cells open longitudinally. Poplar was the most common wood used in Italy for panel paintings; the Mona Lisa and most famous early renaissance Italian paintings are on poplar. Sooty bark canker is caused by the fungus Encoelia pruinosa or Cenangium singulare. Pollination is by wind, with the female catkins lengthening considerably between pollination and maturity. Populus is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Ink spot is common in the mountains of Colorado and in dense aspen stands. Home. The headliners will be joined by Pantheon, Eternal Covenant, Cruciation. Black canker is caused by the fungus Ceratocystis fimbriata. Disclaimer. Symptoms usually start to appear between July and the first fall frost. Blog. Because it develops slowly, it is rarely lethal. Find more Korean words at wordhippo.com! The status of tree deities varies from that of a local fairy, ghost, sprite or nymph, to that of a goddess. Most aspen tree diseases are caused by fungi. The leaves are spirally arranged, and vary in shape from triangular to circular or (rarely) lobed, and with a long petiole; in species in the sections Populus and Aigeiros, the petioles are laterally flattened, so that breezes easily cause the leaves to wobble back and forth, giving the whole tree a "twinkling" appearance in a breeze. During wet conditions, long orange threads or spores may ooze out of the pimples. Human translations with examples: falx, குறிச்சொல், what about you, nh தமிழ் பொருள். All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. [2][4], Poplars of the cottonwood section are often wetlands or riparian trees. Most commonly used to make plywood, Yamuna Nagar in Haryana state has a large plywood industry reliant upon poplar. However, all varieties are seriously susceptible to termite attack, causing significant losses to poplar every year. However, several years of serious infections can cause growth loss in younger trees. Populus wood is a lighter, more porous material. Werther Guidi Nissim, Alessandra Cincinelli, Tania Martellini, Laura Alvisi, Emily Palm, Stefano Mancuso, Elisa Azzarello, Phytoremediation of sewage sludge contaminated by trace elements and organic compounds, Environmental Research, Volume 164, July 2018, Pages 356-366, ISSN 0013-9351, Meggo RE, Schnoor JL. The shoots are stout, with (unlike in the related willows) the terminal bud present. Aspen Legend has it that the aspen was the only tree that did not bow in sorrow and respect when Jesus died on the cross. About. Contact Us. Cytospora canker is a fungal disease caused by several species of fungi belonging to the Cytospora genus. Considering the relative cheap price, the process of making biofuel from SRC can be economic feasible, although the conversion yield from short rotation coppice (as juvenile crops) were lower than regular mature wood.