Table 1.
Treatment | Chlorophyll Content (mg.g−1) | Photosynthetic Rate (µmol m–2s–1) | Stomatal Conductance (mmol m–2s–1) | Intercellular CO2 Concentration (ppm) | Transpiration Rate (mmol m–2s–1) | Water Use Efficiency (μmol mmol−1) | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
F | S | F | S | F | S | F | S | F | S | F | S | |
Control | 2.28 c | 2.36 c | 5.309 b | 4.751 d | 33.24 c | 31.22 c | 138.91 c | 125.18 c | 7.721 a | 8.053 a | 0.687 c | 0.589 c |
Bentonite | 2.26 c | 2.39 c | 4.662 c | 4.110 d | 30.18 c | 32.19 c | 131.45 c | 122.63 c | 7.11 b | 7.690 b | 0.655 c | 0.534 c |
Perlite | 2.02 d | 2.18 d | 3.204 c | 3.109 d | 27.61 c | 30.28 c | 126.71 c | 115.97 d | 7.948 a | 8.06 a | 0.403 d | 0.393 d |
Kaolinite | 2.24 c | 2.31 c | 4.530 c | 4.085 d | 31.15 c | 30.92 c | 130.44 c | 123.09 c | 6.981 a | 7.215 b | 0.648 c | 0.566 c |
N-silicon | 2.45 b | 2.49 b | 6.859 b | 6.937 c | 42.11 b | 43.04 b | 188.29 b | 191.04 b | 5.886 b | 5.210 c | 1.165 b | 1.331 b |
N-zinc | 2.57 b | 2.69 b | 8.207 a | 7.914 b | 43.21 b | 42.89 b | 196.88 b | 206.37 a | 5.282 b | 5.079 c | 1.553 b | 1.558 b |
N-zeolite | 3.09 a | 3.11 a | 9.067 a | 8.669 a | 48.05 a | 47.25 a | 241.21 a | 252.06 a | 4.371 c | 3.975 d | 2.074 a | 2.180 a |
Means followed by different letters point to significant differences between the treatments at according to Tukey’s HSD test (p ≤ 0.05). F = first season, S = second season.