Combined Hydroseeding and Coconet Reinforcement for Soil Erosion Control

Evaluation of the Effect of Hydroseeded Vegetation for Slope Reinforcement

“…Cellulose mulch mixed with tackifier as a binder is also applied [73]. The cellulose mulch, combined with the seeds, germinator, fertilizer, are mixed with water in the hydroseeder, forming a homogeneous slurry and uniformly sprayed on the soil [74]. The fertilizer-mixed cellulose fiber mulch and the seed act as an absorbent mat and hold a large water capacity that helps seed germination and forms a stable blanket cover on the surface before the seed germination period.…”

“…The United States and Australia are among the countries that use hydroseeding because it is considered the fastest, most efficient, and most economical method of landslide control [76]. Studies revealed the following observations and conclusions from hydroseeding application: (a) The hydroseeding process is the fastest means of landslide and soil erosion prevention [74]; (b) Some seeds germinate within two days, which enables the topsoil of the embankment to be already 100% stabilized right before the development of the vegetation ground cover [77]; (c) Watering is required less as soon as the ground cover grass seed has been established [78]; (d) The mulch serves as water retention and absorbing mat, and reduces the development of the unwanted weeds [74]; (d) The end product of hydroseeding requires a very minimal maintenance policy as soon as the permanent ground cover is purely developed [74]. In summary, the contribution of this study is to compare the slope reinforcement effectiveness of the four seed samples (rye corn, ryegrass, signal grass, and couch) used in different parts of the world in Malaysia in relation to the soil conditions.…”