Surface runoff of rainfall in an experimental plantation of macaúba palm (Acrocomia aculeata) under different forms of management
quinta-feira, agosto 15, 2019
Authors: João Batista Lúcio Corrêa, Herly Carlos Teixeira Dias, Kelly Cristina Tonello, Valdir de Cicco, Elias
Silva, Lucas Jesus da Silveira and Aurora Yoshiko Sato
Abstract: Several studies have been conducted aiming to explore the commercial potential of the macaúba
palm. However, research on the hydrological processes of this crop are scarce. Thus, we aimed to quantify the
surface runoff in a macaúba plantation subjected to different crop management techniques, from September 2012
to August 2013. We established 10 plots for surface runoff quantification; each plot had a 63-m² area, was delimited
by metallic foils and had a gallon to collect runoff water at its outlet.
Plots consisted of three treatments and
three repetitions, plus one control plot, each having four macaúba plants. Treatments were as follows: treatment
one (T1) – with no soil conservation technique being implemented; treatment two (T2) – with a narrow-base
terrace 40 cm wide and 30 cm deep; treatment three (T3) – with bean being planted during the rainy months,
forming vegetation strips; and control treatment (T0) – with no macaúba plants, with spontaneous vegetation
growing throughout the entire plot and with no soil conservation technique being implemented.
Surface runoff
differed among treatments. T2 was the treatment with lowest runoff and also the one that demanded the highest
precipitation volume for surface runoff to occur. Our results indicate that both the cover and the use of soil conservation
techniques are closely related to surface runoff, which in turn affects the occurrence of erosion and infiltration.
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