Name of the project: Evaluation of allelopathic potential of mikania (Mikania micrantha) on weed growth
Sher-e-Bangla Agricultural
University Research System
Duration: 2012-13
Present status: Completed and report under preparation
Abstract
The
study was undertaken to evaluate the allelopathic effect of mikania (Mikania micrantha)
on different weeds both in kharif (summer) and rabi (winter) season at the weed
museum of Sher-e-Bangla Agricultural University. Soils from wheat field in
kharif season, whereas that from the T. aman rice field was collected after the
harvest of crops. Mikania application at 0, 2, 4, 6, 8 and 10% by sundry weight
of soil was tried using earthen pots. Fresh chopped mikania was mixed with the
5 cm top soil of the pot and field capacity was set and the weed seeds retained
in the collected soil were allowed to germinate and grow. In kharif season, nutsedge,
joina (Fymbristylis miliacea)
and papri (Lindemia procumbens)
dominated whereas, in rabi season anguli (Digitaria
sanguinalis) was dominating. In kharif season, untreated treatment had the
highest number and the lowest dry weight, whereas the 10% mikania application
treatment had the lowest number and highest dry weights. In rabi season a few
weeds were seen to grow compared to those of kharif season. Nutsedges, anguli
and chapra dominated in the rabi season and in contrast to the kharif season, the
treatments did not have significant effect on individual weeds, but had effects
on total number and weights. 10% mikania application showed lower weed number
but higher dry matter. Both in kharif and rabi seasons, mikania application
from 4% to 10% rate did not show significant differences.
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