Boron availability is low on sandy soil, at high content of nitrogen or calcium, during cold, wet or dry conditions.
Boron deficiency is shown by deformed leafs, rips in stems and roots, bad blossom quality and irregular maturation.
Manganese availability is low on humic, sandy, friable soils, on soils with a high pH-value and during cold and wet conditions.
Manganese deficiency is shown by chlorosis between leaf veins.
Molybdenum availability is low on light and acidic soils (sandy half-bog soils, highmoor soils, garden mould and nutrient substratums) as well as during dryness.
Molybdenum deficiency is shown by deformed leaves (“whiptail”).