IS 14403 -1996 Code Book PDF free download
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Soil Quality and Improvement Sectional Committee had been approved by the Food and Agriculture Division Council. In India, a large area of land is adversely affected by high alkali (sodic) conditions. The chemical amendments are primarily used for the reclamation of alkali soils. Gypsum has been used for a long time as a chemical amendment. The use of iron pyrites as an amendment is a ecent development in the chemical amelioration of alkali soils. The use of pyrites has been found to be quite effective and has opened fresh avenues in the reclamation of alkali soils. A need was, therefore, felt to formulate Indian Standard on the subject stipulating various quality parameters for the benefit of processors and users of the product. In preparation of this standard considerable assistance has been derived from Pyrites Phosphates and Chemicals Limited. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2: I960 ‘Rules for rounding off numerical values (revised)‘. The number ofsignificant places retained in the rouncled off value should be the same as that of the specified value in this standard.
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