For 2a, is the matric potential just the negative tension at that depth, so -1.10?
2c, can water flux density be negative?
-1.10+1.30/0.28-0.16=positive and using that into the flux equation would give a negative flux
As explained in lectures, soil water tension is equal to negative matric potential.
Water potential gradient can be either positive or negative.
Water flux density (q) is calculated based on the Darcy's Law that has minus sign
