Allelopathic effect of Tridax procumben on four kinds of crops / 中草药

ABSTRACT

Objective: To study the allelopathic effect of water extract from Tridax procumbens (WETP) on the seed germination and seedling growth of four kinds of crops. Methods: By water extraction, the stems, leaves, and seeds of T. procumbens were extracted, respectively. The seeds and seedlings of the four kinds of crops were treated with WETP, using distilled water as a control, and the differences between the seeds at four kinds of concentration were analyzed. Results: The synthetic action of WETP on Vigna radiata is promoting. With the increasing concentration, the promoting is diminished. But the effects of WETP on Raphanus sativus, Brassica campestris, and Lactuca sativa were promoting at low concentration and inhibition at high concentration. The inhibitory sequences of water extracts of different parts were seeds > leaves > stems, and for the seeds, L. sativa > R. sativus > B. campestris > V. radiata. The inhibition on L. sativa was the most significant. Conclusion: T. procumbens has the allelopathic effect on native plants. Therefore, T. procumbens could be used as herbicide and cover plant for competition to inhibit other weeds. It has a development and application value.