This document discusses the benefits of companion planting for soil health and pest management. Companion planting involves growing two or more crop species together. It can improve soil health by increasing nitrogen fixation from legumes, conserving moisture and nutrients. Companion planting also aids pest management by using some plants as barriers, traps, or to attract beneficial insects while repelling pests. The document analyzes different mechanisms for how companion planting enhances soil properties and provides non-chemical pest control.