The Effects of Two Control Methods of Cut and Shade on Aquatic Weeds rowth of Coontail and Watermilfoil under Laboratory Condition

پژوهش های حفاظت گیاهان ایران

Article 12, Volume 25, Issue 4 - Serial Number 14, December 2012   

Document Type: Research Article

DOI: 10.22067/jpp.v25i4.11869

Authors

tohidifarid H.^* ; Y. Filizadeh

Abstract

Abstract
Coontail (Ceratophyllum demersum) and Watermilfoil (Myriophyllum spicatum) are current submersed weeds in many fresh waters of Iran. The excessive growth of these plants causes the reduction in utilization of water resources and making some ecological and economical damages in these areas. The aim of this study was to determine the response of two submerged aquatic weeds of Coontail and Watermilfoil to light reduction, cutting (without, once and twice) and their incorporation under laboratory (aquarium) condition. The experiment was conducted in factorial design, with three replications. The experimental traits included the length and dry weight of plants. The experimental results showed that, cutting and shading caused a significant effect (P≤0.01) on length and dry weight of test plants. Also, twice cutting compared with once, due to more reduction in plants carbohydrate storage resulted in better control of both species.

Keywords: Dry weight, Length, Light and Nutrients