Abstract
The results revealed that germination and growth of the test crops were inhibited by Ailanthus excelsa and Acacia nilotica leaf leachates. Among the four test crops taken, cowpea was less affected with the inhibition of 5 and 11 per cent in germination, 6 and 11 per cent in radicle length and 8 and 11 per cent in plumule elongation due to the leachates of Ailanthus excelsa and Acacia nilotica respectively. Whereas seasame was severely affected with the inhibition of 24 and 26 per cent in germination, 15 and 29 per cent in radicle length and 18 and 24 per cent in plumule elongation respectively due to the leachates of Ailanthus excelsa and Acacia nilotica. Regarding conditions under which the study was carried out viz., light and dark conditions the allelopathy effect was comparatively not much pronounced under the light condition. The reason for which might be contributed to the assumption that the allelochemicals might have been disintegrated under light.
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