The idea that crop yield is not proportional throughout the range of supply of a nutrient but that the returns per unit of input decrease as nutrient supply increases was proposed by Liebig. Root functions include all but storage of carbohydrates. The largest soil particles are classified as sand. Root hairs are important to plants because they increase the strength of the roots. Mycorrhizae are bacteria that infect plant roots and are responsible for nitrogen fixation.
Root hairs develop on the meristematic region of the root.
Mechanisms responsible for the formation of soil structure include growth of plant roots. Give a brief definition of soil tilth. Briefly explain why the development of soil structure is important for plant growth.