Research on Soil for the Dutch Organic Sector

The organic sector depends heavily on its soil. In the Netherlands, relatively little acreage is available per farm compared to other countries. This means that the soil has to be kept in optimal shape for production, be it vegetables, cereals, potatoes or animal feed and grassland. By 2020 the Dutch organic sector aims to use 100% organic manure on its soils.

soilFertilizers and chemical control measures are not allowed in organic production. The right combination of crop rotation, soil tillage and the use of manure has to ensure long-term soil fertility. Soil management needs to support a self-healing soil system. The carbon content and ability of organic soils to sequester CO2 from the air is important to the mitigation of climate change.

Minimal tillage has received a lot of attention in recent years. At times it has been a controversial issue in conventional agriculture. For organic farms minimal tillage seems to be a good solution, doing little damage to the soil structure and causing only minimal disruption to soil organisms. GPS techniques and other controlled traffic systems are also used to minimise damage to the soil.

Projects

Chicken manure and nutrient cycling
This project aims to demonstrate the usability of organic chicken manure. It could help to achieve the ambition of 100% organic manure.

Fertilisation strategies
In 2015 the law will demand equilibrium fertilisation. This project develops new strategies for the use of organic manure on different soil types.

BASIS
Combining controlled traffic systems with minimal tillage has a large potential to improve soil quality, minimise emissions and enhance biodiversity.

Resilient soil fertility strategies
This project covers the same themes as the BASIS project, but for sandy soils.

Sustainable organic fertilisation
Development of a method to evaluate the quality of new organic fertilizers, such as slurries and digestates. Validation through field tests.

Controlled Traffic Farming Flevoland
Measuring the potential merits of a true controlled traffic system combined with minimum soil tillage on organic farms in Flevoland province.

Nitrogen toolbox
This project aims to demonstrate the effects of a set of measurements aimed at the reduction of nitrogen leaching on arable farms.

Truly Overijssel!
This project aims to develop sustainable organic farming systems with regional nutrient cycles and enhanced nature and landscape values.

Soil