Screening of Rice Cultivars Resistance to Water Scarcity (Aerobic Condition) during Summer under Drip Fertigation System

Author: P. Sujithra*, A. Gurusamy, P. Saravana Pandian, T. Sivakumar and E. Subhramanian

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Abstract

A field experiment was conducted at AICRP on Water management research block, Agricultural College and Research Institute, Madu raito screen the suitable rice cultivar for aerobic cultivation under drip fertigation system. 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. Among the different rice cultivars tested under drip fertigation system, APO 1 recorded the highest SPAD value (37.1, 40.9 and 42.4 at active tillering, panicle initiation and at flowering stage, respectively), root volume (19.3, 40.7 and 42.1 cc at active tillering, panicle initiation and at harvest stage, respectively), maximum number of tillers m-2 (328 tillers m-2), number of productive tillers (302 productive tillers m-2), dry matter production (11904 kg ha-1), grain (4459 kg ha-1) and straw yield (6581 kg ha-1) in aerobic condition under drip fertigation.

Keywords

Screening, aerobic condition, growth, productivity, drip fertigation.