PGPR by Bacillus in Vetiver Grass?s Root Enhance Strength of Soil-Root Matrix System Toward Slope Stabilization in Malaysia

摘要

An inspection have been implemented on root of Vetiver grass in this study. The root samples were collected either from poorly grown or well grown condition with different soil types and were taken to the laboratory for further laboratory work. The root s were investigated to know the bacteria species present in root and determine the root strength toward different soil types and root condition (poorly and well grown). It was found that the presence of microorganism species in root is Bacillus which is primarily known as Plant Growth Promoting Rhizobacteria (PGPR). The Vetiver grass was found able to grow well in Sandy Soil than Clay Soil in both conditions; dry and wet condition. In clay soil, in wet condition especially the Vetiver grass for both condition poorly and well grown acquired high value of tensile strength than dry condition. The results indicated that appearance of Bacillus in the root able to colonize the root and promote plant growth.