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blossoming - since 1983

2. Different Methods of Hydroseeding

For restoration and establishing grassland vegetation with grass and herb species, we use differing procedures of hydroseeding depending on the respective requirements, i.e. applications

 

  • with an optimization of soil properties (soil ameliorating measures)
  • with an optimization of nutrient contents in the soil (fertilization measures)
  • with an optimization of water retention capacity
  • with an optimization of micro-climatic conditions (e.g. mulch seedings)
  • with an optimization of erosion control (soil-stabilizing measures)

If the site demands it, all methods can be combined as required.

By means of hydroseeding even precious groves can be established. Prerequisites are adequate raw-soil sites and the intermixture of specific intercrop and nurse grass mixtures. Groves grown by seeding are considerably closer to nature and more resistant and vital than planted nursery groves! Certain plants or phythocenoses (reposition plants) can ease soil contamination in connection with soil improving components.

Areas with unfavorable soil-pH, low nutrient and water-storing capacity, a lack of humus or increased ionic activity usually can be vegetated only, if alkaline or acid-acting reagents, mineral (e.g. silicates) or organic (e.g. alginates ) components and osmotic-acting means are applied. Those so-called soil conditioners influence the soil properties relevant for vegetation growth in so far, as a germination of the seed and a long-term growth of a suitable and site- adapted vegetation are made possible.

Particularly raw-soils with disadvantageous soil-chemical, soil-physical and soil-biological values are comprehensively ameliorated and improved in their planting-relevant properties. As technical means, mainly serve hydraulic seedings (hydroseedings) using several additives, e.g. on the basis of alginates and hydrosilicates for soil activation.

Especially poor in nutrients are raw soils with low contents in organic matter (humus). Without a certain minimum amount of plant-available macro nutrients (nitrogen, phosphorus, potassium, calcium, magnesium), successful vegetation growth is hardly possible. We use start fertilizers, which provide quickly disposable nutrients for short-term needs, as well asslow-release fertilizers, which deliver the nutrients slowly over a long period. Concerning time and components, we conceive our fertilizing measures such that remarkable leaching losses, and thus, ground water contamination is avoided.

By applying a mulch layer from organic fibres in connection with hydroseeding, seeds and seedlings will be protected against climatic influences like strong wind, drought and frost. This perceptibly accelerates and supports both, the germination procedure and the vegetation growth. Just with seedings at critical dates threatened by droughts (summer) or early and late frosts (early spring, late autumn), mulch layers are indispensable. Grove seedings without appropriate mulch layers principally are not promising. The mulch cover is slowly decomposed microbially, and thus, activates life in the soil.

Organic fibres like straw, hay, wood fibers, cellulose and cotton serve as means for mulching. Mulch layers generally are applied in a second process step after seeding and are fixed with a suitable soil binder. The two application passes guarantee that the seeds actually are placed under the protecting mulch cover:

1. Hydraulic application of the seeds in combination with the required additives.

2. Hydraulic or dry application of the mulch layer, which is fixed to the soil surface by specific soil binders (tackifiers).

In case of hydroseeding, the soil's surface principally is stabilized with special, ecologically inoffensive erosion control agents (soil binders, tackifiers). This adheres not only seeds and additives to the surface, but also the soil particles themselves. The water absorbing capacity of the substrate, however, remains unaffected. Provided that an effective agent was used, the fixed soil surface will not even be destroyed by the mechanic energy of a heavy shower or thunderstorm.

This includes all methods using natural or organic-synthetic adhesives, soil binders and tackifiers. Those are applied to the soil surface in variably concentrated diluted emulsions or suspensions, either individually to an area which was seeded before or together with seeds, fertilizers and other components (depending on the requirements of the site). Usually, the application of seeds and additives together with means for erosion control is carried out in one working process.

We generally advise you not to realize hydroseedings without soil adhesives. Even on only slightly inclined areas, applied recipe components are removed by wind and rain, which often causes severe erosion damage.

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