Which nutrient contributes to the development of tubers in plants?

The development of tubers in plants is significantly influenced by the presence of potassium. This nutrient plays a vital role in various physiological processes within plants, including photosynthesis, enzyme activation, and water regulation. Potassium helps in the efficient transport of carbohydrates, which are critical for the formation and growth of tubers. It enhances root development and encourages the establishment of a robust root system, allowing for better nutrient and water uptake, further supporting tuber development.

While the other nutrients mentioned are important for different aspects of plant growth, they do not specifically facilitate tuber development as effectively as potassium. Nitrogen is primarily associated with vegetative growth and foliage health, phosphorus is crucial for root development and flowering, and calcium is essential for cell wall structure and cellular function, but none focus on the specific processes involved in tuber formation like potassium does. Thus, potassium is the key nutrient that directly contributes to the successful development of tubers in plants.