RE: Post EU deal for farmers12 Sep 2018 10:54
Certainly if we are to look after our soil for future generations there should be a place for a certified organic soil improver such as polyhalite. Having said that, there is a great variation in U.K. soil types and compounded by the presence in poly of calcium and magnesium, the K component can often become displaced in some of those soils. This can lead to any K not taken up by plants unfortunately being washed away and lost.
However, because the ‘other’ form of organic material tends to have a high cation exchange capacity though, it can help in retaining K. As such, incorporating traditional organic soil amendments such as compost, green manure or animal manures can enable us to mitigate this leaching effect. Thankfully Gove has plenty of the latter.
Cheers,
per ardua ad astra