Which chemical must be applied to the roots to keep the leaves of a plant green?

Farmers in a particular region observed that during the cultivation of pulse crops,the leaves become yellow and underdeveloped,leading to a decrease in yield. Which treatment can result in higher seed production?

State the effects of cytokinin.

Which hormone is reported from Banana flowers?

What are the primary functions of cytokinins in plants?

This hormone was discovered from the $DNA$ of herring fish sperm.