92 The Global Food System
enhanced physiological efficiency of the plant (San-oh et al, 2006). The practice of
planting a single seedling per hill, and its impact on root activity is one of the
unique and novel components that could be explored using SRI management.
Theory of Root Oxidation Activity
Before we discuss SRI management practices in relation to root activity, we need
to review the physiology of root activity; and how it influences the physiology of
the rice plant by enhancing photosynthetic efficiency.
Table 4.1 Model for cultivation of an ideal rice plant based on High-Yielding Theory
(HYT)Note: * Measures to restrict nitrogen supply must be taken mainly during the early growth
period.
Source: Matshusima, 1973