Effect of irrigation management on physiology and productivity of soybean (Glycine max) Elamathi S., Sundar Singh S.D. Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore, 641003 Abstract A field experiment was carried out during summer and monsoon seasons of 1996 using soybean [Glycine max (L) Merr.] ‘Co1’ with 2 irrigation levels, viz. 0.40 and 0.60 IW: CPE ratio, 3 methods of irrigation, viz. all furrow, alternate furrow and paired row furrow, and 4 management practices comprising coirpith application, KCI 0.5% at peak flowering stage, Kaolin 3% foliar spray at 30,45 and 65 days after sowing and control. The crop growth and yield were better in monsoon than in summer. Irrigation at 0.60 IW: CPE ratio through all furrow method recorded lower canopy temperature, lower transpiration rate, higher relative leaf water content (RLWC) and stomatal diffusive resistance (SDR) which resulted in higher seed yield. All management practices, viz. coirpith, KCI and Kaolin, separately maintained higher tissue water content than in the control. Top Keywords Irrigation, Physiology, Productivity, Soybean. Top |