Allelopathic effects of Canna indica on paddy weeds

作者：Lin Dongzhi^*; Sugitomo Y; Dong Yanjun; Tsuzuki E; Matsuo M

来源：Allelopathy Journal, 2009, 24(1): 169-175.

• Allelopathy
• Canna (Canna indica L.)
• weed control
• rice field

We evaluated the allelopathic effects of Canna indica on paddy weeds. Aqueous extracts (1, 2, 4, 8 %, w/v) from its powdered naturally withered aerial parts inhibited the seed germination and seedling growth of lettuce (Lactuca sativa L.) and two major weed spp. [barnyardgrass (Echinochloa crusgalli L.) and monchoria (Monocharia vaginalis P.)]. All C indica dried powders at 50, 100, 150 gm(-2) significantly inhibited the emergence and dry weights of weeds in paddy field but had no adverse effects on growth of transplanted rice. These results showed that C, indica plants might be used as a natural herbicide to control weeds in paddy field.

• 出版日期2009-7
• 单位上海师范大学