HomeInternational Rice Research Notesvol. 30 no. 2 (2005)

Short-duration rice varieties adaptable to sodicity

S. Rama Geetha | S.e. Naina Mohammed | S. Anthoniraj

Discipline: Agriculture

 

Abstract:

Sodicity is one of the most widespread problems in irrigated agriculture. Rice is best suited for growing in problem soils since it can be cultivated under flooded conditions. Although rice strongly tolerates sodicity, reduction in grain yield varies quite a lot compared with that under favorable environments. Growing the most sodicity-tolerant rice varieties is a long-term strategy that can ensure better economic returns. Because of the complexity in the inheritance pattern of sodicity tolerance and because of screening problems, only a few rice varieties are released for commercial cultivation in sodic conditions (Gregorio et al 2002). Though there are reports on cultivar differences in sodicity tolerance, studies on screening for adaptability of popular rice varieties to sodic conditions are scanty. Some crop varieties, although not bred for unfavorable environments, fared well under abiotic stresses. (IR64, which was developed for irrigated conditions, was later observed to possess drought tolerance.)