This is a valuable fertiliser containing N, P and K that many owners of AD plants apply back onto their land. However, excess digestate can be a problem for both owners and contractors as the high levels of available nitrogen are susceptible to leaching and force a late application in a short window to utilise the effectiveness of the nitrogen.
Dealing with large volumes of digestate to apply can be a major problem for some.
Mixing Piadin with digestate enables early application and early emptying from the holding tanks (NVZ rules dependant).
Spread the workload and control the planning of large volumes of digestate. For liquid digestate this can be delivered via umbilical or injection into the soil, locking onto the nitrogen and releasing as the soil temperature warms up. For higher dry matter material it must be sprayed onto the digestate within 24 hours and disc or plough incorporated.
The biggest benefit is seen in energy maize where UK trials have shown circa 17% yield increases by supplying the plant with available nitrogen throughout the whole growing period.
11% of all maize grown for energy in the UK last year used Piadin to utilise their digestate and increase yields, while reducing their carbon footprint.