Resumen
- Tolerance to submergence Preliminary studies in CIAT, reported in 1998, suggested that it is possible to develop crop systems that reduce E. colona competition during the earlier crop growth stages using varieties tolerant to submergence. Dry seed plantings studies have shown that E. colona emergency was significantly reduced under given crop practices, under which FR 13A, a submergence tolerance rice variety, emerged satisfactorily. A new set or trials were carried out this year in order to develop an screening method that allow us to identify rice genotypes tolerant to such submergence conditions under which E. colona growth may be restricted. We report here studies under both dry and pre-germinated plantings systems.