Hydroseeding, Spray Application

The  immediate protection of the surface against erosion makes hydroseeding the most important procedure in establishing vegetation on slopes and raw soils tending to erosion. Therefore, this method gains special importance in road construction (roads, railroad tracks, noise protection walls) waterway construction, mining (e.g. lignite opencast mining) and quarries as well as in the reclamation of landfills, training areas and ski slopes.

The Procedure:

The grassing recipe contains seed and additives like special fertilizers, soil conditioners, mulch fibers and erosion control agents. Those are mixed with water to a homogenous suspension in an all-terrain „Hydroseeder“. This mixture is evenly spray-applied to the area to be seeded by means of a pumping aggregate and high-pressure cannon. The essential advantages of spray-application are:

• Immediate erosion control due to a tackifier
• Even sterile raw soils poor in organic matter can be treated successfully
• Growth acceleration due to additives
• Activation of soil life
• Consistent component application even in impassable regions
• Dense and consistent surface coverage

Using the hydroseeding technique, recu-systems reaches spraying widths of up to 60 m. With hose extensions, even areas within a distance of up to 200 m can be reached, which enables us to establish vegetation with machines without facing any problems even in areas lacking access for vehicles. Areas completely impassable are treated with special aircrafts. 

Seed Blends Applied in Spray Planting

To guarantee a professional, long-term and healthy vegetation, the applied seed blends must be adjusted to the respective site conditions. A seed blend's suitability for spray application not only depends on its site suitability, the ecological behavior of the contained species and its classification to a particular phytocenosis; a harmonically adjusted, percentual load distribution, considering the sometimes strongly differing thousand-seed weights of the individual species, is important, too.
Generally, seed blends of grass and herbs from accredited seed suppliers with a broad ecological amplitude are applied. Fortunately, seeding with regional, indigenous species, excluding the problematic interference to the local flora by uniform cultures, gains more and more importance.