**4.2.2 Geobinder**

216 Soil Erosion Studies

The amount of soil splashed out by runoff from the containers were collected and weighed. The data collected were used to compare erosion in mere bare soil to that with combined

The soil core test box consists of water tight (leak free) container which holds the soil core specimen. The core is made up of wood that is capable to hold soil at a desired angle of the specimens. It includes gutter which is a runoff ramp for the routing of the soil and water that are washed out from the container to the bucket without spilling out. The dimensions

The collection bucket is used for the catchments and measurement of the eroded soil. This should have sufficient volume to collect the soil and water that is spilled out. Recycled 1 gallon mineral water containers were used to temporarily store the collected soil and water.

A filter for the separation of the sediment from soil and water solution is used. Recycled

Approved seed varieties are those that are tested to withstand harsh weather conditions, characteristically aggressive, perennial, tropical, produce both runners and rhizomes, deep rooted, will rapidly colonize bare ground and form a dense mat of vegetation ground cover.

cloth used such as sack for flour, locally known as "katsa" was utilized.

are shown earlier in Fig. 1. The actual soil core test box is shown in Fig. 2.

hydroseeding and coconet as slope protection.

Fig. 2. Test boxes shown with compacted soil.

**4.2 Hydroseeding technical specifications**  The hydroseeding mix has the following component:

**4.1.1 Collection bucket** 

**4.1.2 Filter** 

**4.2.1 Grass seeds** 

**4.1 Soil core test box** 

Airtol geobinder is a low cost cementitious binder used in the study. When mixed with water and mulch, this geobinder sets in a predictable way to form an erosion resistant crust. Packed in 22.8 kilo bag, it is produced from high quality gypsum and is (fully) imported from the USA.
