Which primary macronutrient prevents flower and seed formation in plants?

Phosphorus plays a crucial role in various plant processes, especially in energy transfer and the formation of DNA and RNA. It is essential for flower and seed development. When plants are deficient in phosphorus, they may exhibit limited flowering and reduced seed formation, as phosphorus is necessary for reproductive growth and the successful development of these structures. Conversely, when phosphorus is unavailable, plants struggle to form flowers and seeds, impacting their ability to reproduce.

Nitrogen primarily supports vegetative growth by promoting the development of leaves and stems. Potassium is associated with overall plant health, stress responses, and fruit development but does not directly prevent flowering or seed formation like phosphorus does. Iron, while essential for chlorophyll production and electron transport, does not directly influence the reproductive aspects of plants in the same way that phosphorus does. Thus, phosphorus is identified as the primary macronutrient linked to preventing flower and seed formation in plants.