BUD NECROSIS IN TULIPS, A MULTIFACTORIAL DISORDER
In a number of cultivars bud necrosis can be stimulated by temperature treatment and by limiting the ventilation when Fusarium infected bulbs are present. Packing such bulbs in boxes means accumulation of ethylene which causes morphological aberrations of the buds: the buds are not closed at their tips. The aberrant form of the bud is a pre-requisite for the penetration of mites into the buds, which cause a process of decay. The sensitivity to bud rot is not equal for all varieties.