Leaf sap analysis: when to do it and what it shows you
A leaf sap analysis shows you what the plant has actually taken up – not what is in the soil. That is the whole difference. In the plan...
Boron: why the deficiency persists even though you fertilise
Boron is not mobile in the plant. Once it has been used, it is not resupplied from older leaves – the plant needs a steady supply, othe...
Magnesium: why the deficiency comes in spring even though the soil is full
In cold soil, magnesium does not reach the plant – not even when there is plenty of it in the soil. This is not a supply problem but a ...
