Recently I started a marigold plantation farm. At first the plants were healthy and had good flowers, but after half a month, the plants dried up one by one.
Observation: when I observe, I see that the most bottom leaves start to dry and turn to a dark black colour first, and then slowly the problem goes higher towards the upper portion. Meanwhile the plant blooms but the flower is a reduced size.
Is there any option to get relief from this symptom? If yes, please kindly provide me with the fertilizer or whatever it may be. It's urgent.