The dynamics of cinnamic acid uptake in cucumber plants and its residue in soil were studied. The cucumber ‘Changchun Mici’ was grown in pots and cinnamic acid was applied at 0, 25, 50, 100 and 200 mg·kg−1 soil. The application of cinnamic acid increased its content in cucumber plants and in soil, with its increasing dose and the retention rate (in cucumber and in soil) decreased with high doses. The rate of allelochemicals addition and soil retention probably controls the allelochemicals content in soil. The allelochemicals content in soil was the result of interactions among the plant and soil microbes.
Cinnamic acid, cucumber-soil system, dynamics, retention, transfer
