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Residue burning in semi-arid regions is considered a soil management practice given its time saving, pleasurable tillage, and easy seedbed preparation. Therefore, it is the focus of a great deal of research studies for surface runoff generation, flood susceptibility, and erosion hazard. The objectives of this study were to i) comparewater retention and transmission properties of completely-burned, moderately-burned, and unburned soil conditions and ii) simulatethe responses of soil conditions to water flow in the profile.The persistence of fire-induced impacts were studied in 3 hectare land for both burned and unburned conditions for two years. The air-entry value was significantly higher for unburned soils (P=0.045) than the one for completely burned soils and somewhat higher than moderately burned soils (P=0.054).Water transmission parameter Ksat was significantly higher in the moderately burned soils than the Ksat values of the rest of the treatments (P=0.001).The burned treatments had the highest water fluxes, hydraulic conductivities and the lowest retentive capacities comparing to the unburned treatments. Residue burning significantly changed soil structure and flow regime in the burned treatments. To conclude, residue burning is not as advantageous as retaining residue in the Amik plain soils.

Post-harvest evaluation of water retention and transmission properties of soils subjected to residue burning