Nutrient Input via Incident Rainfall in a Eucalyptus dunnii Stand in the Pampa biome

AUTOR(ES)

Dick, Grasiele, Schumacher, Mauro Valdir, Momolli, Dione Richer, Viera, Márcio

FONTE

Floresta Ambient.

DATA DE PUBLICAÇÃO

26/07/2018

RESUMO

ABSTRACT We evaluated the nutrient input via incident rainfall in a Eucalyptus dunnii stand in the Brazilian Pampa biome. During the two-year study, we analyzed nutrient concentrations in incident rainfall (P), throughfall via drip (Pi), and stemflow (Et). Ion concentrations (NO2-, NO3-, PO43- , SO42-, Cl-, K+, Ca2+ , and Mg2+) were determined from the aqueous solution, and based on the water volume, the quantity per hectare (kg ha-1) was estimated for each element. Statistical differences observed by ANOVA and separation of means contrasts were subjected to Tukey’s test (5%), adopting a completely randomized design. Higher concentrations of SO4 2- in P; NO3- in Pi solution, and K+, Ca2+ , Mg2+, and Cl- in Et were observed. Greater amounts of nutrients such as Cl-, K+, Ca2+, and SO42 were incorporated via Pi.

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