CHAVES, A. D. C. G.; http://lattes.cnpq.br/3798235256439208; CHAVES, Alan Dél Carlos Gomes.
Abstract:
The intensive agriculture developed has different environmental impacts on water
quality. It is therefore necessary to monitor several quality indicators and including the
assessment of pesticide residues. The work aims to study the quality of groundwater
used for irrigation for vegetable production located in the Community of Lowland Long
Calf Olives and the City of Pombal / PB, considering its use for irrigation. Was
developed in the municipality of Pombal / PB, through visits in the communities of
Long Lowland Olive Calf and working with the production of vegetables irrigated with
groundwater from wells in the region, 19 water samples were collected and analyzed in
situ and referred to the analysis of soil and water (IFPB / Sousa) laboratory. A reduction
in the electrical conductivity of the water since February, a period marked by the onset
of the rains, demonstrating the effect of rainwater dilution of salts. The Piranhas River
showed higher turbidity from February, as rains in this period can revolve the materials
deposited on the river bottom and drag those in the riverbed. Two salts were studied,
bicarbonate ion was showed the highest values in water, wells 4, 6 and 10 showing 11.3,
10.34 and 10.42 mmol L-1. Sodium chloride and the presented results ranging from 0.4
to 2.7 mmol L-1 and 0.2 and 3.68 mmol L-1, respectively, causing no concern for use in
irrigation, taking into account a management efficient irrigation . The sodium adsorption ratio showed the highest values in four wells (2.67 mg L-1) and 13 (2.6 mg L1).
