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DETERMINATION OF WATER HARDNESS FROM AGRICULTURAL AREAS OF SÃO PAULO STATE

ABSTRACT

Total hardness of water supply from 17 agricultural areas of São Paulo state were analyzed, and physical-chemistry tests were carried out in 2 kinds of pesticide formulations relating parameters found in the waters with their influence on the physical-chemistry characteristics of the pesticide solutions.

KEY WORDS:
Water hardness; physical-chemistry test; pesticide solutions.

Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
E-mail: arquivos@biologico.sp.gov.br