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ignanavel@gmail.com
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Department of Agronomy, Annamalai University, Annamalainagar, Tamil Nadu 608 002
Allelopathic potential, Botanical extract, Coleus spp. Eichhornia crassipes, Water hyacinth
Among different parts of Coleus spp., dried leaf powder (25 g/l of water) was found most effective in reducing the fresh weight and chlorophyll content of E. crassipes and showed 100 reduction on 9 and 6 days after treatment, respectively. Combination of 3/4th of dried leaf powder (18.75 g/l) + 1/4th of dried whole plant powder (6.25 g/l) was also found effective next to 25 g/l dried leaf power. Dried stem powder (25 g/l) showed minimum reduction in fresh weight and chlorophyll content.