Vol. 10, Issue 11 (2021)

Author(s):
P Sujithra, A Gurusamy, P Saravana pandian, T Sivakumar and E Subhramanian

Abstract:
A field experiment was conducted at AICRP on Water management research block, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai, India during rabi, 2019 to screen the suitable rice cultivar for aerobic cultivation under drip fertigation system. The experiment was laid out in randomized bock design with four replications. The rice cultivars namely, Anna (R) 4, CO 51, APO 1, MDU 6, TKM 13 and ADT (R) 45 were tested under drip fertigation system. Growth parameters viz., plant height, LAI, tiller production m-2 and dry matter production; number of productive tillers m^-2 and yield were recorded. Total crop water use and water use efficiency were also computed. Among the rice cultivars APO 1 recorded the highest plant height (136.1 cm), LAI (5.61), tiller production (365 tillers m^-2), dry matter production (12416 kg ha^-1), number of productive tillers (326 m^-2) grain (5104 kg ha^-1) and straw yield (6928 kg ha^-1). Highest water use efficiency (1.05 kg m^-3) was amounted with APO 1 compared to other cultivars under drip fertigation system.