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Replacing the (inefficient) manual runoff sampling method used in Brazil – a prototype sample splitter Scientia Agricola
Samuel-Rosa,Alessandro; Moura-Bueno,Jean Michel; Dalmolin,Ricardo Simão Diniz.
ABSTRACT The method used to sample the runoff collected from soil erosion plots can be a significant source of error. In this study, we performed a laboratory experiment to evaluate the efficiency of the runoff sampling method most commonly used in Brazil. It is based on the manual homogenization and sampling of the collected runoff. Using soil material with 583 g kg–1 of sand and 89 g kg–1 of clay, the manual sampling method was tested for its ability to produce representative samples of artificial suspensions with a concentration of 2, 10 and 50 g L–1 of total solids. An underestimation of 30 % or more of the concentration of total solids was observed, with a variation of the same magnitude (CV between 20 and 45 %). We then developed a prototype sample...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Erosion monitoring; Soil loss; Sandy soil; Uncertainty.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401402
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