Necrosis,or death of tissue,particularly leaf tissue,is due to the deficiency of ........

One of the causes of little leaf disease is due to the deficiency of:

Deficiency of which of the following elements causes the weakening of the pedicel and petiole?

Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.

How are the terms 'critical concentration' and 'deficient' different from each other in terms of the concentration of an essential element in plants? Can you find the values of 'critical concentration' and 'deficient' for minerals $Fe$ and $Zn$?

If the size of fruits diminishes in plants,which mineral ion should be added to the soil?