In the area of the Rijn en IJssel Water Board, there are a number of dike sections that are mainly made up of sandy material and have a sparse grass cover (WBI assessment: open, locally patchy). Especially during dry summers, these dike sections suffer extra. These dikes must also have a sufficiently erosion-resistant turf/sod (at least open). These pathways will need to be improved so that they are sufficiently erosion-resistant.

The assignment involves the execution of a thorough, multi-year practical study into the effects of biostimulants. The test sections will be constructed on the inner slope of primary flood defence dike ring 48, dike section Bevermeer between dike piles 432 - 433 and 442 - 444 (near Hoog Keppel). There are 3 boxes with Compost, 3 boxes with Kaumera, 3 boxes with a combination Compost + Kaumera and 3 untreated boxes (regular management: mowing / flailing) are laid out by the water board.

The assignment involves the execution of a thorough, multi-year practical study into the effects of biostimulants. The test sections will be constructed on the inner slope of primary flood defence dike ring 48, dike section Bevermeer between dike piles 432 - 433 and 442 - 444 (near Hoog Keppel). There are 3 boxes with Compost, 3 boxes with Kaumera, 3 boxes with a combination Compost + Kaumera and 3 untreated boxes (regular management: mowing / flailing) are laid out by the water board. The 12 boxes are measured by the water board using GPS and displayed in an Arc-GIS environment. The research aims to determine the difference in effect of biostimulants on the development of the turf on sandy dikes within a period of at least 4 years.