Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional

BIBTEX RIS

Avaliação da qualidade da água do distrito de irrigação Tabuleiros Litorâneos do Piauí - Ditalpi

2013; Volume: 7; Issue: 3 Linguagem: Inglês

10.7127/rbai.v7n300019

1982-7679

Luís Gonzaga Medeiros de Figueredo Júnior, Jucielle Rocha Ferreira, Carlos Newdmar Vieira Fernandes, Alex Carvalho Andrade, Benito Moreira de Azevedo, Kleiton Rocha Saraiva,

Growth and nutrition in plants

Irrigation management has been the focus of great interest to those studying irrigated agriculture. The presence of salts in the irrigation water, for instance, associated with higher temperatures and intense evaporation can cause soil salinization, reducing growth and crop yield. This study was aimed at evaluating the temporal variability of salts in the irrigation water and its effects on the soil of the Distrito de Irrigação Tabuleiros Litorâneos do Piauí (DITALPI). That was done in order to diagnose any problems and monitor the water quality in the area. We analyzed the main physico-chemical parameters defining irrigation water quality: pH, electrical conductivity, plus the adsorption rates of Na+, Ca2+, Mg2+, K+, Cl-, CO32- and HCO3- . In the soil, we determined: pH, Ca2+, Mg2+, Na+ and Al3+, by the standards of the United Nations Food and Agriculture Organization (FAO). Sampling was carried out from October 2005 to July 2007, covering both the rainy and the dry season, at five points ranging from the approach channel of the Parnaíba River up lots located at the end of the production area. The results indicated that the obtained values met the current standards required for irrigation use.