Effects of Biochar Addition on Rill Flow Resistance

The development of rills on a hillslope whose soil is amended by biochar remains topic to be developed. A theoretical rill flow resistance equation, obtained the integration power velocity distribution, was assessed using available measurements at plot scale with added soil. incorporated and mixed arable content BC 6 12 kg m−2. developed analysis demonstrated that an accurate estimate profile parameter Гv can proposed equation exponent e Reynolds number which decreases for increasing values. This result pointed out increase dumps turbulence. agreement between measured friction factor values those calculated estimated calibrated measurements, characterized errors are always less than or equal ±10% ±3% 75.0% cases. In conclusion, allowed (i) calibration relationship Гv, bed slope, Froude number, (ii) assessment influence and, (iii) stating gives Darcy–Weisbach flows soils.