liming


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liming

(līm`ĭng), application to the soil of calcium in various forms, generally as ground limestone, but also as marl, chalk, shells, or hydrated lime. Lime benefits soil by neutralizing acidity, improving texture, and increasing the activity of soil microorganisms. It enables bacteria on the roots of legumes, e.g., alfalfa and clover, to secure essential nitrogen from the air, increasing soil fertility. It also increases the available phosphorus in soils. The value of liming was recognized in ancient Rome, and it was common in medieval France and England. Some 17 million tons of lime are sold annually in the United States. In 1987, 264,000 United States farms applied lime on 12.5 million acres.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Liming

 

in the leather trade, treating a skin or clean raw hide with milk of lime containing sodium sulfide and sometimes other added substances.

Liming is done in frame and other drums, worm apparatus, paddle mixers, and vats. When semifinished products are limed, the connection between hair and dermis is weakened; interfiber protein materials (mucins, mucoids) are removed; sizable structural elements of the dermis (collagen fibers and their clusters) are split into finer ones (fibers and fibrils); and fatty materials of the skin are partly saponified.

The basic factors affecting liming are composition and concentration of the lime liquor, temperature, duration, and mechanical treatment. Liming conditions substantially affect the main properties of the leather. Intensive liming is used to make softer kinds of leather. Without proper precautions, liming can lead to blemishes on the face of the leather.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

liming

[′līm·iŋ]
(agriculture)
Treating the soil with lime.
(chemical engineering)
Soaking hides and skins in milk of lime and causing them to swell, to facilitate the removal of hair.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
If the liming recommendations of a state are based on an ECCE of 80 percent and the soil test suggests that 4 ton [acre.sup.-1] of lime is needed, how much material should you add if you have a source of dolomitic limestone that is 95 percent pure and for which 95 percent of the particles pass a 10 mesh, but only 50 percent pass a 50 mesh sieve?
If the ECCE of a liming material is 70 and the lime rate for the state is based on material with an ECCE of 83 percent how should the lime rate be adjusted if you determine that the ECCE of your liming source is 90 percent?
Secondly, the effect of liming on the aggregate distribution is not statistically significant.
The CEC varied appreciably among the aggregate classes, the soil horizon designations and the liming practices.
For example, using the WRF response surface, liming to a target pH of 6.5 may be desirable if an acid-intolerant crop such as canola (Brassica napus) is to be grown.
The average lime requirement of 7.13 Mg/ha and the site-specific lime requirements of the field were compared to demonstrate the rationale behind variable-rate liming using the WRF buffer and response surface methodology.
Harald Sverdrup, a chemical engineer and liming expert from the Lund (Sweden) Institute of Technology, cautions that "liming doesn't solve all [ecosystem] problems -- just a suite of the worst." Nonetheless, he says, it is the fastest remedy for surface-water acidification.
The amount of lime which can be accounted for is lime recovered plus the amount which would have been removed by re-acidification or leaching during the period between liming and collecting the soil samples.
Liming only slightly increased electrical conductivity of the soils in the 0-2.5 cm layer (for DD and CC1) and the 2.5-5.0 cm layer (only CC1) (Fig.
Liming affected soil K supply in Wongan Hills but not at Merredin and the mechanism for this needs to be identified to improve our capacity to manage lime or pH x nutrient interactions on this soil type (Tenosols).
However, liming is likely to have increased the pH to levels conducive for availability of most nutrients and hence its positive effect on maize growth.