Agricultural lime

Ground burnt lime refers to ground quicklime used for agricultural liming. 

In 1991, the average value per metric ton of lime in bulk was reported to be 78.44 for agricultural lime, 68.12 for constmcfion lime, 54.90 for chemical lime, and 82.62 for refractory lime. The average value for total lime was 57.02/t. 

Spill/Leak Disposal Isolate the incident scene dress in proper personal protective equipment (see above) do not allow contact with any materials, liquid or gas stop and/or control leak or hazard if possible to do so and control water - use water spray to control vapor and any vapor cloud. Contain product and keep phosgene from entering sewers, streams, or water intakes. Dike surface flow, and depending on the temperature, try to neutralize the product for disposal using agricultural lime (slaked lime), crushed limestone, or soda ash, or sodium bicarbonate. 

Agricultural lime, 25 26 Agricultural Pesticides Directive, 23 51 Agricultural products... 

Neutralize with agricultural lime (CaO), crushed Limestone (CaC03), or sodium bicarbonate (NaHC03). 

Johnson, F.J. (1990a) Agricultural liming materials. In Helrich, K. (ed.) Official Methods of Analysis, 15th edn. Association of Official Analytical Chemists, Arlington, Virginia, pp. 1-8. 

Soil acidity commonly is decreased by supplying carbonates, oxides, or hydroxides of calcium and magnesium, compounds that are referred to as agricultural limes. Wood ashes (as from a fireplace) also are used to help raise soil pH. The primary sources of carbonates, and by far the most... 

Many of our grandparents probably dusted plants with agricultural lime to control a variety of insect pests in the garden. 

The Ca content of soils varies widely, ordinarily ranging from about 0.07 to 3.60%. Calcium is contained in a number of soil minerals including dolomite, calcite, Ca feldspars, apatite, amphiboles and many others. Coarse-tex-tured soils in humid regions, particularly those formed from rocks low in Ca minerals, are generally low in Ca. In spite of this, Ca deficiencies in crops do not appear to be of widespread occurrence, although a number of other factors affect nutrition in low base status soils. Fertilizers are not generally manufactured specifically to provide Ca as a plant nutrient, since this element is economically supplied by periodic applications of agricultural lime, as discussed subsequently. 

Approximate amounts of agricultural lime used for direct application to soil in the U.S.A., 1955-1975 (Anon., 1975.)... 

The values in this table are given in tons of pure CaCOg per acre required to bring the soil to the indicated pH and thus are required to be converted to their equivalents in the form of agricultural lime to be used. The figures are multiplied by a factor of 2.43 to express in tons per hectre. 

Chemical equations can be given as word equations, which use the names of the reactants and products, or they can be written as formula equations, which use symbols and formulas of the species involved. The reaction of calcium oxide (agricultural lime) with water to form calcium hydroxide is written here as a word equation. 

This worker is spraying a lake in Sweden with agricultural lime (calcium oxide), in an attempt to counteract the inflow of acidic materials. 

A few of the many manuals on chemical analysis which include instructions on sample collection may be mentioned. For over 100 years, AOAC INTERNATIONAL, has published detailed experimental procedures for sampling, subsampling and pretreatment of natural materials with the latest volume (Horwitz 2000) containing procedures for materials such as agricultural liming materials, fertilizers, plants, animal feed and dairy products in various chapters. A chapter on sampling dairy and related products is in the book edited by Marshall (1993) on Standard Methods for the Examination of Dairy Products. Specific sampling procedures for various food commodities are summarized by Ihnat (1982), based mostly on the AOAC manual. 

SPILL CLEAN-UP for water spill, neutralize with agricultural lime, crushed limestone, or sodium bicarbonate adjust pH to neutral remove immobilized masses of pollutants and precipitates wet mopping, wet wiping, and wet vacuuming is recommended for dust control and for keeping dust levels down. 

The generic term, lime includes quicklime and slaked lime, and is synonymous with the term lime products. Lime is, however, sometimes used incorrectly to describe limestone products (e.g. agricultural lime) this is a frequent cause of confusion. 

As the importance of soil came to be understood, the application of agricultural lime increased. Until the middle of the 20th century, most liming of agricultural land was done using quicklime and hydrated lime products (see section 30.2). These produced fine particles of calcium hydroxide in the soil, which initially raised the pH and then reacted with atmospheric carbon dioxide to form finely divided calcium carbonate. The carbonate was sufficiently soluble to maintain the pH at the required level for a prolonged period. 

The production of large tonnages of finely divided limestone and chalk products only became economic with the development of dry grinding equipment in the middle of the 20th century. Such products are commonly called agricultural lime . To avoid confusion with quicklime and hydrated lime products, the term agricultural limestone will be used. 

Agricultural Lime and the Environment , The Agricultural Lime Producers Council, published by the British Aggregate and Concrete Materials Industries, 1994. 

Traditionally, the primary fines were sold as agricultural lime, but, with the increased availability of ground limestone, the price of agricultural lime ceased to... 

As with limestone, minimising wastage is an important factor in the economics of quicklime production. Integrated hme works often feed surplus grades to a hydrating plant or to a ground lime plant. Products which cannot be used are often blended into selected products, or sold as agricultural lime. 

Lime treatment involves the use of quicklime, or slaked lime, either as powdered hydrated lime, or as a milk of lime (N.B., it does not use the product marketed as agricultural lime , which is generally calcium carbonate and which does not have the same effect on soils). The effect of lime on soils can be divided into three stages drying, modification, and stabilisation. 

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