Abstract:
Pot experiment was conducted in NWFP Agricultural University Peshawar during January 2003. Grinded leaves of Prosopis juliflora, Eucalyptus camaldulensis and Acacia nilotica were soaked in tap water for 5 hl at room temperature. The concentration of each tree species was 150, 100 and 50 g L-1. Completely randomized design having four repeats was used. Ten seeds of each species were sown in pots and then irrigated with the respective extracts soon after sowing. Results showed that germination %age and plant height of both species were significantly affected by different concentrations. Prosopis showed stimulatory effect on germination of both the species. In wheat, maximum germination and plant height of 52.50 % and 32.22 cm, respectively was recorded in Prosopis treated pots as against 15 and 31.50 cm in control however in Eucalyptus @150 g L-1 also 15% germination of wheat was recorded. Similarly, for wild oats, maximum germination percentage and plant height of 47.5 % and 51.9 cm was recorded in Prosopis treated pots. Low concentration of Prosopis proved stimulatory as compared to higher concentrations. Eucalyptus showed slighlyt negative effect on the species tested. The effect of other concentrations of tree extracts was comparable to each other in the species tested. Hence it can be concluded from the results that allelopathy of trees can be used as viable weed management technique in the future as allelopathins stimulate the germination of wild oats which give the chance of making soil seed bank weaker.
Page(s):
265-269
DOI:
DOI not available
Published:
Journal: Pakistan Journal of Weed Science Research, Volume: 12, Issue: 4, Year: 2006