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

Program AMUN_SHC ! Symbols: MO: Soil moisture content (v/v), S: Soil salinity (ds/m), SSI: Soil stress index, PSI: Plant stress index, MP: Soil matric potential, OP: Soil osmotic potential, hS: Soil total potential, hfc: Soil total potential at field capacity PC: Partially Compensated uptake FC: Fully Compensated uptake, kc: crop coefficient: water holding capacity Avg: average plant stress index Beta1: SHC calculated from root water uptake, Beta2: SHC calculated from Richard’s equation. IMPLICIT NONE REAL Mo(1,50),S(1,50),SSI(1,50),PSI(1,50), dssi, AVG, KC, hfc,Tp,beta,Beta1, Beta2, hs, ht, dh,Mp,Op,x,y,Zs,Zp, c INTEGER i, j X=0 y=0 Zs=0 zp=0 I=1 dssi=0 avg=0 kc=0 Tp=0 ht=0 dh=0 beta1=0 beta2=0 WRITE (*,*) 'inter hfc, dssi, avg, kc, c' READ (*,*) hfc,dssi, avg, kc, c OPEN (UNIT=7,FILE="input3.txt") OPEN (UNIT=77,FILE="output.txt") DO J=1,50 READ (7,*) (MO(i,j)) READ (7,*) (S(i,j)) MO(I,J)= x Mp=(x)*0.0174 S(I,J)=y op=(y)*0.036 hs=Op+Mp dh=hs- ht ht=hs SSI(I,J)= hs/hfc SSI(I,J)=Zs dssi= SSI(I+1,J)-SSI(I+1,J) PSI(I,J)=(Avg * kc*dSSI/zs)+(Avg) PSI(I,J)= zp © 2023 Global Journals 1 Year 2023 44 Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( )D 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