The levels of jasmonic acid and salicylic acid in a rice-barnyardgrass coexistence system and their relation to rice allelochemicals

► JA and SA are quantified in a rice-barnyardgrass coexistence system. ► There is a positive correlation in level between rice allelochemicals and JA or SA. ► Elicitation of rice allelochemicals production by root-exuding and applying JA. ► Endogenous SA in rice shoots linking to allelopathic traits in rice varieties.