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Aerenchyma or aeriferous parenchyma [ 1] or lacunae, is a modification of the parenchyma to form a spongy tissue that creates spaces or air channels in the leaves, stems and roots of some plants, which allows exchange of gases between the shoot and the root. [ 2] The channels of air-filled cavities (see image to right) provide a low-resistance ...
Corythucha elegans, the willow lace bug, is a bug species in the family Tingidae found on willows in North America. Rhabdophaga rosaria is a type of gall found on willows. Rust, caused by fungi of genus Melampsora, is known to damage leaves of willows, covering them with orange spots.
Salix tetrasperma, commonly called Indian willow, is a medium-sized tree of wet and swampy places, shedding its leaves at the end of monsoon season. It flowers after leafing. The bark is rough, with deep, vertical fissures and the young shoots leaves are silky. The leaves are lance-like, or ovate-lancelike, 8–15 cm long, with minutely and ...
This compound is applied either to the cut tip of the cutting or as a foliar spray. Rooting hormone can be manufactured naturally, such as soaking the yellow-tipped shoots of a weeping willow tree in water, or by preparing a tea from the bark of a willow tree. Shoots or bark do better when soaked for 24 hours prior to using. [19]
Salix scouleriana is a deciduous shrub or small tree, depending on the environment, usually with multiple stems that reach 2 to 7 metres ( to 23 ft) in height in dry, cold, high elevations, and other difficult environments, and 10 to 20 m (33 to 66 ft) or more in favorable sites. The stems are straight and support few branches generally ...
An insect 's respiratory system is the system with which it introduces respiratory gases to its interior and performs gas exchange . Air enters the respiratory systems of insects through a series of external openings called spiracles. These external openings, which act as muscular valves in some insects, lead to the internal respiratory system ...
The willow was harvested using traditional methods of pollarding, where a tree would be cut back to the main stem. New shoots of willow, called "withies", would grow out of the trunk and these would be cut periodically for use. [120] During the 1930s, over 9,000 acres (36 km 2) of willow were being grown commercially on the Levels. Largely ...
Phytoremediation technologies use living plants to clean up soil, air and water contaminated with hazardous contaminants. [ 1] It is defined as "the use of green plants and the associated microorganisms, along with proper soil amendments and agronomic techniques to either contain, remove or render toxic environmental contaminants harmless". [ 2]