Chapter 37.3, Problem 1CC

Summary Introduction

To explain: Why a study of the rhizosphere is needed to understand plant nutrition.

Concept introduction: The rhizosphere is a region around the plant roots which contains a number of bacteria with which the root systems form a mutualism that is beneficial. These bacteria depend upon the plant’s sugars, proteins, and sloughed off cells as their primary source of food. In return, the bacteria help to create a nutrient-rich and more aerated place for the roots of the plants.