Effect of Crofton Weed Aqueous Extract with Different Parts on Seed Germination and Seedling Growth of Radish

[Objective] The aim was to discuss the allelopathic effect of noxious weed crofton weed.[Method] The allelopathic effect of crofton weed with different parts(root,stem and leaf) aqueous extracts at different concentrations(0,10,20,30,40 and 50 g/L) was studied using radish seeds as the accepted bodies.[Result] Comparing with the control,the effects of root and stem aqueous extracts of crofton weed on germination rate,seedling growth(root length and shoot length) of radish tended to the same tendency that lower concentration accelerated and higher concentration inhibited.While germination rate,seedling growth of radish were inhibited with the incremental leaf aqueous extract of crofton weed,furthermore,inhibited degree increased with the increase of concentration of crofton weed aqueous extracts.Under the same concentration,the order of the effect of crofton weed aqueous extracts on seed germination and seedling growth of radish was leafstemroot.[Conclusion] The results provide references for the field control of crofton weed.