Fresh weight changes on vigna mungo and vigna radiata by allelopathic effect of tectona grandis

In plant produced phytotoxic allelopathic effect of Tectona grandis investigated on Vigna mungo and Vigna radiata, dried leaves of Tectona grandis were collected from coastal area of Cuddalore District..50g powder of teak leaf was soaked in distilled water and after 24hrs filtered with help of WhatmannNo.1 filter paper used to prepare extract .Using this stock solution various concentrations (5,10,25,50,75 and 100%) were prepared and sterilized 50 seeds of Vigna mungo and Vigna radiata were placed in sterilized petridishes .Five seedlings from each replicate were selected for recording the fresh weight on 15th day after sowing. Influenced allelopathic effect was observed in 5% concentration of extract treatment than control and in all other concentrations it shows gradual inhibitory effect on both crop seedlings.