Article Figures & Data
Tables
- Table 1.
Influence of the biostimulants on trunk diameter and shoot growth of Quercus robur ‘Fastigiata’ trees.
Treatment Diameter (cm)
1999Diameter (cm)
2000Shoot growth (cm)
1999Shoot growth (cm)
2000Mycobacter 9.295 9.90 8.32 9.59 Root Grow 8.783 9.76 7.99 8.89 Control 9.110 9.32 6.54 7.93 p-value 0.269 0.265 0.089 0.112 - Table 2.
Influence of the biostimulants on leaf dry weight, dry/fresh weight, leaf area, SLW (specific leaf weight, leaf dry weight/leaf area) of Quercus robur ‘Fastigiata’ trees in 1999 and 2000. Sampling date: 135 days after budbreak.
Treatment 1999 2000 Dry weight (g) Dry/fresh weight ratio SLW (mg/cm2) Leaf area (cm2) Dry weight (g) Dry/fresh weight ratio SLW (mg/cm2) Leaf area (cm2) Mycobacter 138 0.464 6.69 20.62 ab* 203 a 0.456 5.30 38.31 a Root Grow 130 0.478 6.04 21.51 a 201 a 0.455 5.03 39.96 a Control 130 0.496 7.14 18.22 b 157 b 0.461 4.89 32.09 b p-value 0.860 0.481 0.228 0.015 0.042 0.784 0.58 0.000 ↵* Means with different letters are significantly different at p ≤ 0.05.
- Table 3.
Influence of the biostimulants on net photosynthesis (Pn) (pmol CO2 * m-2 * s-1), evaporation rate (E) (mmol H2O * m-2 * s-1), WUE (water-use efficiency: Pn/E) of Quercus robur ‘Fastigiata’ trees. Average of four sampling dates in 1999 and 2000.
Treatment 1999 2000 Pn E WUE Pn E WUE Mycobacter 12.31 a* 2.15 a 5.73 a 12.44 a 2.67 4.66 ab Root Grow 12.06 a 2.13 a 5.66 a 13.54 a 2.71 5.00 a Control 9.06 b 1.83 b 4.94 b 11.09 b 2.57 4.32 b p-value 0.000 0.004 0.002 0.014 0.795 0.041 ↵* Means with different letters are significantly different at p < 0.05.
- Table 4.
Chlorophyll content (p g * g-1) of Quercus robur ‘Fastigiata’ leaves 90 and 135 day after budbreak (ABB) as affected by commercial biostimulants.
1999 2000 Chlorophyll
90 ABBChlorophyll
135 ABBChlorophyll
90 ABBChlorophyll
135 ABBMycobacter 13.85 a* 17.71 14.99 a 16.09 Root Grow 13.83 a 17.73 14.25 a 16.57 Control 12.66 b 16.45 12.90 b 15.25 p-value 0.000 0.097 0.000 0.150 ↵* Means with different letters are significantly different at p ≤ 0.05 (year 2).
Treatment N % P % K % Mg % Fe ppm Mycobacter 2.35 a* 0.137 0.86 0.317 256.3 Root Grow 2.25 a 0.137 0.92 0.267 223.3 Control 2.04 b 0.130 0.82 0.287 212.7 p-value 0.038 0.216 0.452 0.096 0.499 ↵* Means with different letters are significantly different at p ≤ 0.05.