FAQ

It is cheaper than peat and to colonize the ‘empty’ peat with soil organisms.

Installation of a digester besides the VeDoWS stable construction. The created heat can be used to heat the stable (less coughing)

The expensive manure processing is less necessary. Besides that the VeDoWS construction creates a better climat for the farmer in the stable (absence of ammonia), no use of extra water is needed in comparison with other systems such as air scrubbers.

A lack of knowledge by the end-users about the VeDoWS urine. End-users aren’t well informed about the use of the product, the content, … so the demand is low and the pig-farmer (owner of a VeDoWS adapted stable construction) cannot store it yet. Only if owners know that there will be a demand they are willing to invest in storage capacity.

If the forage for the pigs is more solid, the system operates more slowly. Spraying with water helps.

The system has to scrape the solid fraction frequently otherwise it becomes too hard or too much to be shoved easily.

An adapted stable construction of VeDoWS has an economical advantage: expensive manure processing is less necessary. Besides that the VeDoWS construction creates a better climat for the farmer in the stable (absence of ammonia), no use of extra water is needed in comparison with other systems such as air scrubbers.

This depends upon the measured temperature, oxygen and CO2 concentration. It is important to control these to get a good quality compost. If the temperature or CO2 concentration is too high, turning is strongly advised. It is also good to homogenise the compost.

You can also do composting without blanket covering, but our tests show that nutrient losses are minimized by covering the compost piles/rills

This depends on how mature the farm compost is. A mature compost is a source of available N for your crop. If you apply immature compost, the microbiome will keep on breaking down organic matter and use soil N for this, competing with your crop and potentially resulting in N shortage. It is therefore wise to complete the composting process to maturity. Check if the heaps are cooled down and measure stability and compost characteristics in the laboratory. Alternatively, you can apply immature compost in autumn. N shortage is than not an issue for the crop, and immature compost can boost the soil microbiome.

Tests show that part of phosphorus in compost is not immediately available for plants. However, the P in compost ends up in the soil P storage and all this P increases the P availability in the soil anyway. In Flanders (Belgium) only half of P in compost is accounted for in the manure legislation, but in fact all this P ends up in the soil and can become available for plants.

Inagro had to use a specialised field injector with respectively a vacuum pump system and a hose pump system that can be switched on/off depending the product you want to apply.

The risk of influences on soil-pH should not be that big.

If the pH is low and little rainfall is expected, it is advisable not to apply the effluent on a crop, especially not when the application is due on grassland because then you have a high risk of crop burning.

A farmer adapted his own spraying machine for applying ammoniumnitrate of an air scrubber.