This document is a foundational agricultural concept paper that provides a detailed explanation of basic plant physiology (photosynthesis) and the most fundamental aspects for plant growth, including soil-related physical/chemical properties and soil fertility chemistry. Based on these factors, it systematically presents the step-by-step techniques for practical land preparation. In particular, to succeed in land preparation, it is necessary to deeply understand and practically apply the following five basic factors: site selection, soil structure, soil quality/soil type, soil pH index, and soil nutrients. This document explains these five factors along with other agricultural topics.
