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Bonsai enthusiasts use undiluted lime sulfur to bleach, sterilize, and preserve deadwood on bonsai trees while giving an aged look. [5] Rather than spraying the entire tree, as with the pesticidal usage, lime sulfur is painted directly onto the exposed deadwood, and is often colored with a small amount of dark paint to make it look more natural.
Once deadwood has been shaped to the designer's plan, the exposed area is treated with a bleaching preservative. The most common is a horticultural combination of lime and sulfur, available from many garden outlets. The preservative protects the wood from rot and pest infestation, and provides a uniform bleaching that resembles weathered, aged ...
Shari denotes stripping bark from areas of the trunk to simulate natural scarring from a broken limb or lightning strike. In addition to stripping bark, deadwood techniques may also involve the use of tools to scar the deadwood or to raise its grain, and the application of chemicals (usually lime sulfur) to bleach and preserve the exposed deadwood.
Key lime Cornus: Dogwood Cotinus coggygria: Smoke Tree Cotoneaster: Cotoneaster Crassula, especially Crassula ovata: Jades [6]: 40–41 Crataegus: Hawthorn Cryptomeria: Sugi Cupressus, especially Cupressus macrocarpa: Cupressus Cydonia oblonga: Common Quince Dasiphora fruticosa: Shrubby Cinquefoil Diospyros virginiana: Common Persimmon [7]
A number of styles describe the trunk shape and bark finish. For example, a bonsai with a twisted trunk is nebikan (also nejikan (ねじ幹)), and one with a vertical split or hollows is sabakan. The deadwood bonsai styles identify trees with prominent dead branches or trunk scarring. [3]: 123–124 Trunk and root placement.
Lignosulfonates (LS) are water-soluble anionic polyelectrolyte polymers: they are byproducts from the production of wood pulp using sulfite pulping. [1] Most delignification in sulfite pulping involves acidic cleavage of ether bonds, which connect many of the constituents of lignin. [2]
The pulping liquor for most sulfite mills is generated by treating various bases (alkali metal or alkaline earth hydroxides) with sulfur dioxide: SO 2 + MOH → MHSO 3 MHSO 3 + MOH → M 2 SO 3 + H 2 O. Similar reactions are effected with divalent cations (Mg2+, Ca2+) and using carbonates in place of hydroxide.
The main aim of bonsai aesthetic practices is to create miniature trees with an air of age in their overall shapes, proportions, and details. The quintessential bonsai is a single, dwarfed tree in a small container. It has the appearance of a mature tree, but not of a completely natural one.