What are the physiological disorders of Gerbera and Anthurium flowers in greenhouse cultivation?

Question

The physiological disorders of Gerbera in greenhouse cultivation are as follows

Bushiness:

Bushiness is an abnormal condition of Gerbera and the characteristics of this abnormality are many numbers of leaves, short petioles and small laminae, which give some cultivars of Gerbera a bushy appearance. Nodes are not distinguished clearly and Internode elongation is not at all seen.

Stem break:

Stem break is a disorder which is the most common one and occurs post-harvest in cut gerberas. Water imbalance is the main cause of Stem break. It can be ethylene controlled and associated with early senescence associated with water stress.

Yellowing and purple margin:

Yellowing and early senescence of leaves are caused by a deficiency of Nitrogen. Pale yellow colour with purple margin is caused by phosphorus deficiency. An increase in levels of nitrogen and phosphorus was used to promote the development of suckers and improve flowering in Gerbera.

The physiological disorders of Anthurium in greenhouse cultivation are as follows:

Excess light:

Leaves seem to appear bleached at the centre and also have brown tips. To control this problem, the shade should be given. This reduces the light level to 1800-2500 foot-candles.

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