Morphology and biological characteristics of some popular weedy rices in the Mekong delta of Vietnam

Abstract

The growing trend of cropping intensification, mechanisation, the use of poor-quality rice seeds, and the shift in rice cultivation methods from transplanting to direct sowing to meet food security and export demand are causes of the emergence and spread of weedy rice (Oryza sativa f. spontanea) in the Mekong delta in recent years...