versão On-line ISSN 1816-7950 MZEZEWA, Jestinos e VAN RENSBURG,
Leon D. Effects of tillage on runoff from a bare clayey soil on
a semi-arid ecotope in the Limpopo Province of South Africa.
Water SA (Online) [online]. 2011, vol.37, n.2, pp. 165-172. ISSN
1816-7950. Runoff constitutes one of the major water losses from
agricultural fields in semi-arid areas. However, by adopting
appropriate soil management practices, the runoff can be
harnessed for improving crop yields. The main objective of this
study was to quantify rainfall-runoff relationships under in-
field rainwater harvesting (IRWH) using simulated rainfall, and
to compare these results to those obtained with annually tilled
conventional tillage (CON) (control). IRWH is a special type of
no-till (NT) crop production practice that promotes runoff from
a crusted runoff strip into basins where the water infiltrates
beyond evaporation but is available for crop use. Runoff was
related to time to runoff, total runoff, final runoff rate and
runoff coefficient.