Herbicide use and occurrence of Echinochloa spp. in ricefields in dry and intermediate zones of Sri Lanka

This article 'Herbicide use and occurrence of Echinochloa spp. in ricefields in dry and intermediate zones of Sri Lanka' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.