Department of Agricultural Meteorology, College of Agriculture, CCS, HAU; Hissar, 125 004
Seasonal changes in predawn leaf water potential, (P Ψ L) stomatal resistance (rs) and canopy temperature (Tc) and relationships between these parameters were studied in differentially irrigated wheat. Unirrigated wheat had consistently lower (P Ψ L) and higher (rs) and (Tc) than irrigated one. The maximum difference between irrigated and unirrigated wheat were noticed during the milk stage. Significant parabolic correlations were found in (P Ψ L) and (Tc) (R2=73), and linear reciprocal correlations (R2=0.80) with (P Ψ L) and (rs) and a linear correlation with (rs) and with (Tc) (R2=.73).
