Table 1.
Effect of P. alvei alone and in combination with three dose levels of F. pseudograminearum on mean 1 mass and disease severity of S. bicolor seedlings at 14 days post inoculation (d.p.i.).
| Treatment | Crown Rot | Fresh Mass | Dry Mass | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P. alvei | F. pseudograminearum | Li-Rating 3 | Isolations 4 | Leaves | Roots | Leaves | Roots | ||||||
| (cfu mL−1) 2 | (spores mL−1) | (%) | (g) | (g) | (g) | (g) | |||||||
| 0 | 0 | 0.00 (±0.00) | e | 0.00 (±0.00) | c | 0.68 (±0.16) | c | 0.73 (±0.30) | a | 0.14 (±0.07) | a | 0.04 (±0.01) | ab |
| 1 × 108 | 0 | 0.00 (±0.00) | e | 0.00 (±0.00) | c | 0.75 (±0.21) | ab | 0.80 (±0.35) | a | 0.14 (±0.06) | a | 0.05 (±0.02) | a |
| 0 | 1 × 102 | 1.14 (±1.03) | cd | 22.67 (±8.84) | ab | 0.65 (±0.21) | c | 0.74 (±0.36) | a | 0.11 (±0.07) | b | 0.05 (±0.02) | a |
| 0 | 1 × 104 | 1.90 (±0.96) | b | 24.00 (±9.66) | ab | 0.67 (±0.18) | c | 0.68 (±0.28) | a | 0.10 (±0.05) | b | 0.05 (±0.02) | a |
| 0 | 1 × 106 | 3.06 (±1.80) | a | 26.00 (±6.99) | a | 0.55 (±0.11) | d | 0.55 (±0.19) | a | 0.06 (±0.02) | c | 0.04 (±0.02) | ab |
| 1 × 108 | 1 × 102 | 0.57 (±0.86) | de | 21.33 (±10.60) | ab | 0.58 (±0.19) | d | 0.65 (±0.32) | a | 0.10 (±0.07) | b | 0.03 (±0.00) | b |
| 1 × 108 | 1 × 104 | 1.32 (±1.05) | bc | 21.00 (±11.01) | ab | 0.70 (±0.24) | bc | 0.78 (±0.32) | a | 0.11 (±0.06) | b | 0.05 (±0.03) | a |
| 1 × 108 | 1 × 106 | 1.67 (±1.35) | bc | 18.00 (±13.17) | b | 0.76 (±0.18) | a | 0.81 (±0.38) | a | 0.11 (±0.07) | b | 0.05 (±0.03) | a |
1 Means within columns followed by the same letter does not differ significantly according to Tukey’s least significance determination (LSD) test at a significance level of p < 0.05. Numbers in parenthesis are the standard deviation from the mean. 2 Colony forming units per millilitre. 3 Disease severity rating calculated according to a ‘0-5 scale’ based on lesion severity [21]. 4 Percentage of the isolations made from the stem area that yielded growth on Fusarium-selective medium.