Plant Growth Inhibitory Activity of Goniothalamus andersonii Bark Incorporated with Soil on Selected Plants

Raihan Ismil,Yoshiharu Fujii,Nobuhiro Hirai

doi:10.36648/2248-9215.9.1.78

Abstract

Phytotoxic effects of soil incorporation with Goniothalamus andersonii bark powder against Cucumis sativus (cucumber), Trifolium repens (white clover), Lactuca sativa (lettuce), and Lolium perenne (perennial ryegrass) were evaluated under the greenhouse condition for possible utilization as weed suppression. The growth of tested plants was reduced significantly after 14 days of incorporation where the degree of inhibition was dose dependent. A monocotyledonous plant, L. perenne was greatly inhibited by 94.8% when exposed to the bark powder concentration of 2% (w/w). After 21 days of incorporation, the length and fresh weight of both root and shoot part of tested plants were decreased significantly. These results indicate that G. andersonii bark possess inhibitory activity against various tested plants, suggesting that the bark powder is very beneficial as natural herbicide in weed control management.

Highlights

Allelopathy is defined as the interaction between plants, including microorganisms which have detrimental or beneficial effects through the release of chemical compounds into the environment [1]
The bark powder of G. andersonii incorporated with soil was tested against C. sativus, T. repens, L. sativa and L. perenne in
The effects of soil incorporated with G. andersonii bark powder on the growth and biomass of tested plants 21 days after incorporation

Summary

Introduction

Allelopathy is defined as the interaction between plants, including microorganisms which have detrimental or beneficial effects through the release of chemical compounds into the environment [1]. The liberation of secondary metabolites into the environment by living or dead plant tissue occurs through several ways namely volatilization, root exudation, leaching and decomposition of plant residues in soil [1,2] This will interfere with the growth and development of neighboring plants or other organisms. The retardation of seed germination and individual plant growth inhibition are adversely affected by soil incorporation or surface application, such as mulch of allelopathic crop residues. This phenomenon resulted in the reduction of weed community density and vigor as a whole [7]. The density and biomass of some weeds were significantly decreased as affected by the mulching or incorporation of legumes or cereals [8,9,10]

Methods

Results

Conclusion