The effects of cutting time on the regrowth of Typha angustifolia

Abstract

A experimental study was carried out to investigate the effects of shoots cutting time on the regrowth characteristics of Typha angustifolia. Field observation was conducted in the pond. Four 1 m by 1 m quadrats were demarcated in the T.angustifolia community, and surrounding area was kept undisturbed to use as a control area. In each quadrat, shoots were cut at about 20 cm above water surface in June, July, August and September 2002 and allowed to re-grow from cutting stubbles at all quadrats. The results of this study shows that June and July cut shoots were re-elongated up to the same height as the control. While delay of the cutting time showed decreased re-growth shoots biomass. Rhizome of August cut quadrat showed smallest biomass in December. Moreover, shoot cutting in August is found to be more suitable to suppress T.angustifolia expansion.