Table 1. Explanation of terms used in text
Leaf area index Ratio of leaf area (one side only) of the crop to the ground area. Specific leaf area Leaf area per unit leaf dry weight. Net assimilation rate Dry matter accumulation rate per unit of leaf area per unit of time (g m–2 (leaf area) day–1). Crop growth rate Dry matter accumulation per unit of land area per unit of time (g m–2 (land area) day–1). Harvest index Proportion of biological yield represented by economic yield.