Abstract:
Aqueous leaf of two dominant weeds (Eupatorium odoratum and Ageratum conyzoides) of Mizoram north-east, India were tested for their allelopathic influences on germination and radicle extension of test crops (Oryza sativa, Brassica campestris and Glycine max). The germination and radicle extension of B. campestris was completely inhibited by E. odoratum and A. conyzoides. The germination of G. max was inhibited (8.04%) under E. odoratum and stimulated (14.94%) under A. conyzoides compared with control. The germination of O. sativa was not affected by any of the two weeds studied, however, the radicle growth was inhibited to the extent of 41.68% and 17.02% under E. odoratum and A. conyzoides, respectively, compared with control. The radicle growth of G. max was also inhibited by 10.71% under E. odoratum and stimulated by 3.96% under A. conyzoides. E. odoratum was found more toxic weed for the selected test crops. The tolerance of the test crops to the extracts in the decreasing order was Oryza sativa > Glycine max > Brassica campestris.
Page(s):
83-92
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Weed Science Research, Volume: 13, Issue: 1--2, Year: 2007