What nutrient, common in fertilizer, can limit plant growth if in short supply?

Nitrogen is a critical nutrient for plant growth and is often referred to as a macronutrient because plants require it in relatively large quantities. It is a vital component of amino acids, proteins, and nucleic acids, which are essential for various biological processes. A deficiency in nitrogen can lead to stunted growth, yellowing leaves, and reduced overall vigor of the plant, ultimately limiting its ability to thrive.

While phosphorus, iron, and magnesium are also important nutrients for plants, nitrogen is particularly crucial because it directly influences growth rates and the development of plant tissues. Plants utilize nitrogen to produce chlorophyll, which is necessary for photosynthesis. Therefore, if nitrogen is in short supply, it can severely affect a plant's ability to produce energy and grow properly, highlighting its significance in the context of fertility management in aquatic environments and beyond.