TY - JOUR
T1 - Runoff from soils under different management and simulated rainfall regimes in southern Brazil
AU - Kaufmann, Vander
AU - Pinheiro, Adilson
AU - Castro, Nilza Maria dos Reis
AU - Fernandes, Cristóvão Vicente Scapulatempo
AU - Merten, Gustavo
N1 - Publisher Copyright:
© 2014 IAHS Press.
PY - 2014/12/2
Y1 - 2014/12/2
N2 - Surface runoff and drainage were evaluated for southern Brazilian soils subjected to different rainfall intensities and management practices. Soils received up to four applications of simulated rainfall in sequences with one application per day. Seven lysimeters, each of 1 m3 volume, were used to measure drainage volume, with measurement of initial and final water content, times at which surface runoff and lysimeter drainage began, and the volume rates of flow. At the end of the second test, soils were subjected to two levels of disturbance (denoted by low and high soil movement) by opening furrows. These cultivation treatments altered the times at which lysimeter surface runoff and drainage were initiated, the rates of surface runoff, the final infiltration and internal drainage, and the components of the water balance throughout the series of trials. Mean times at which surface runoff was initiated in lysimeters subjected to greater soil disturbance were longer than those with little soil disturbance. Final infiltration rates were greater in lysimeters with little soil disturbance. It was also found that lysimeter surface runoff generation was influenced by the state of development of maize grown in the lysimeter.
AB - Surface runoff and drainage were evaluated for southern Brazilian soils subjected to different rainfall intensities and management practices. Soils received up to four applications of simulated rainfall in sequences with one application per day. Seven lysimeters, each of 1 m3 volume, were used to measure drainage volume, with measurement of initial and final water content, times at which surface runoff and lysimeter drainage began, and the volume rates of flow. At the end of the second test, soils were subjected to two levels of disturbance (denoted by low and high soil movement) by opening furrows. These cultivation treatments altered the times at which lysimeter surface runoff and drainage were initiated, the rates of surface runoff, the final infiltration and internal drainage, and the components of the water balance throughout the series of trials. Mean times at which surface runoff was initiated in lysimeters subjected to greater soil disturbance were longer than those with little soil disturbance. Final infiltration rates were greater in lysimeters with little soil disturbance. It was also found that lysimeter surface runoff generation was influenced by the state of development of maize grown in the lysimeter.
KW - hydrological processes
KW - lysimeter
KW - runoff generation
KW - water balance
UR - http://www.scopus.com/inward/record.url?scp=84910150180&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84910150180&partnerID=8YFLogxK
U2 - 10.1080/02626667.2014.945454
DO - 10.1080/02626667.2014.945454
M3 - Article
AN - SCOPUS:84910150180
SN - 0262-6667
VL - 59
SP - 2173
EP - 2185
JO - Hydrological Sciences Journal
JF - Hydrological Sciences Journal
IS - 12
ER -