Global Journal of Science Frontier Research, D: Agriculture and Veterinary, Volume 23 Issue 1

Schematic of the potential water uptake distribution function, b(x, z, t), in the soil root zone (Left).A control volume from root zone (Rght). S (z,t) = SSI . β = PSI. S max µ = = ∬ ,( +∆ ) ,( ) dSSI dz= ∬ ( ,( +∆ ) ,( ) ) = ∫ s n (PSI SSI+ ∆ SSI - PSI SSI )dz = [ ( ) +∆ −( ) +∆ + −( ) ( ) ] ( ∆ z). (6) =∬ ,( +∆ ) ,( ) dh dz= ∬ ( ) ,( +∆ ) ,( ) = (h*/Tp ) ∬ ,( +∆ ) ,( ) = (h*/Tp ) ∫ s n (Tc h+ ∆ h - Tc h )dz = (h*/Tp ) [ ( ) +∆ −( ) +∆ + −( ) ( ) ] ( ∆ z) (7) = (θ V. ∆ z 2 . h*/Tp) [ ( ) +∆ −( ) +∆ + −( ) ( ) ] [ ( ) +∆ −( ) +∆ + −( ) ( ) ] (8) 1 Year 2023 35 © 2023 Global Journals Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( ) Figure 5: i. Root navigation bath ii. Domain root for Compensation ΩRC iii. Compensated root water uptake D b) Modeling the root response to harch extreme moisture regime The Modified Richard’s Equation for Assessing the Impact of Drought and Salinity in Arid and Semi-Arid Zones. Part Two: A Soil Hydraulic Capacitance