Caracterização físico-química dos 5 primeiros milímetros da precipitação obtida de um amostrador para uso na irrigação da agricultura urbana em Tangará da Serra, Mato Grosso, Brasil
Cleidiane Moraes Novais, Tadeu Miranda de Queiróz
Engenharia Sanitaria e Ambiental
Urban Farm DB summary
In Tangará da Serra, Mato Grosso, Brazil, a city facing a recent water crisis, researchers analyzed samples collected from October 2019 to April 2020 with an initial-rainfall sampler, measuring pH, bicarbonates, electrical conductivity, total dissolved solids, calcium, magnesium, total hardness, chlorides, sodium, and potassium in the first five millimeters of rainfall to assess its suitability for irrigating urban agriculture. Chemical compound concentrations were highest in the very first millimeter of rain and improved as precipitation continued; under FAO guideline classification there was no restriction on using the municipality's rainwater for urban agriculture irrigation, though both natural and anthropogenic sources may have influenced the measured concentrations, and discarding the initial millimeters before use is presented as a viable option for irrigating backyard crops.