The hydraulic conductivity of the control and UN100 amended soils
was similar demonstrating that UN alone did not show any positive
effects on soil hydraulic conductivity (Table 3).
Application of organic ororganic–inorganic amendments significantly increased hydraulic conductivity by 15 to 32% over the control and 10 to 27% over UN100 (averaged over two sites).
Our results are in consistence with the findings of Saha et al. (2010) who reported that integrated use of FYM, biofertilizer and limewithmineral fertilizer increased hydraulic conductivity by 8 to 39% compare to control and 2 to 29% over NPK fertilizer.
The increase in the hydraulic conductivity under organic and integrated treatmentswas mainly attributed to decrease in BD and increase in the effective pore
volume (Flowers and Lal, 1998) or due to the improvement in soil structural
stability, increase in organic matter content and biological activity of the soil (Bellakki et al., 1998).
Under a field experiment conducted on a Vertisol, hydraulic conductivity of the NPK + FYM amended soil was significantly greater than NPK (35%) and control treatments (64%) (Hati et al., 2006)