Figure 5. Diurnal variation in transpiration rate (100–95%, A–D; 80–75%, E–H; 55–50%, I–L and 35–30% of FC, M–P) of Saccharum officinarm “GT 42” plants exposed to four irrigation levels and four silicon levels, n = 5. Si = 0, 100, 300 and 500 mg L⁻¹.

Values in parentheses indicate percentage gain against control condition.