Effects of the concentration of manganese in the seed in alleviating manganese deficiency of Lupinus angustifolius L.

Low concentration of manganese in the seed of narrow-leafed sweet lupin (Lupinus angustifolius L.) decreased both the germination of seedlings and grain yield. In lupin, the grain yield obtained from seeds with increasing the manganese concentration planted on manganese-deficient soils could not reach grain yields on the maximum yield plateau reached by applying fertiliser manganese or minimise the amount of split seed. Consequently, in lupin for maximum grain yield and minimum amounts of split seed, both adequate manganese in seed and fertiliser manganese are required on manganese-deficient soils.