Analyses
Trace elements: why a few grams do so much
A tonne of plant dry matter contains around 15 kg of nitrogen but only 0.1 g of molybdenum. Yet this tenth of a gram decides ...
Protein in bread wheat: why nitrogen alone is not enough
More nitrogen does not automatically mean more protein. In the leaf, the nitrogen has to become amino acids, and for that the plant nee...
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 ...
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...
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...
