ผลร่วมของสารสกัดใบสาบเสือและกระถินเทพาต่อการงอกและการเจริญของไมยราบ
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Abstract
Many plant species can produce secondary metabolite compounds that affect growth of other plants including weeds. They can be developed for weed control. Therefore, the aim of this study is to determine the synergistic effect of Chromolaena odorata and Acacia mangium leaves crude extracts on germination and growth of some weeds in rice field. The crude extracts were extracted with dichloromethane and methanol for C. odorata and A. mangium extraction, respectively. Then, the phytochemical screening of C. odorata and A. mangium ensured the presence of alkaloids, coumarins, flavonoids, terpenoids and steroids and alkaloids, tannins, reducing sugars and steroids. The synergistic effect between C. odorata and A. mangium extracts with ratio of 1 : 1, 2 : 1 and 1 : 2 was determined the germination and growth of sensitive plant (Mimosa pudica L.) and Sangyod rice (Oryza sativa L.) as control. The results showed that the ratio of 2 : 1 was effective to inhibit germination (73.40 %) and growth; root length (38.27 %), shoot length (77.88 %) of the sensitive plant. However, this ratio of the extracts was not effective on Sangyod rice germination and growth. Therefore, C. odorata and A. mangium leaves crude extracts can control specific weed germination and growth.
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