31: Soil and Plant Nutrition Last updated Mar 6, 2021 Save as PDF 30.25: Plant Defense Mechanisms - Against Pathogens 31.1: Nutritional Requirements of Plants Page ID12623 BoundlessBoundless ( \newcommand{\kernel}{\mathrm{null}\,}\) 31.1: Nutritional Requirements of Plants31.1A: Plant Nutrition31.1B: The Chemical Composition of Plants31.1C: Essential Nutrients for Plants31.2: The Soil31.2A: Soil Composition31.2B: Soil Formation31.2C: Physical Properties of Soil31.3: Nutritional Adaptations of Plants31.3A: Nitrogen Fixation- Root and Bacteria Interactions31.3B: Mycorrhizae- The Symbiotic Relationship between Fungi and Roots31.3C: Nutrients from Other Sources