Table 6.
Impact of exogenously sprayed folic acid in two rates of 100 and 150 mg L−1, ascorbic acid in two rates of 100 and 200 mg L−1, and salicylic acid in two rates of 100 and 200 mg/L compared with untreated control on tuber quality of potato tubers in salt-affected soil over two growing seasons.
| Treatment | Dry Matter (%) | Protein (%) |
Starch (%) |
Total Carbohydrates (%) | Sugars (%) | ||
|---|---|---|---|---|---|---|---|
| Total | Reducing | Non- Reducing |
|||||
| Untreated control | 19.1 ± 1.3 d | 6.21 ± 0.3 e | 13.4 ± 0.6 d | 58.0 ± 1.6 f | 5.36 ± 0.3 f | 1.71 ± 0.05 f | 3.65 ± 0.1 e |
| Folic acid 100 mg/L | 21.9 ± 1.4 c | 10.4 ± 0.5 c | 15.9 ± 0.8 c | 75.6 ± 2.7 cd | 6.75 ± 0.4 c | 1.99 ± 0.04 c | 4.74 ± 0.2 b |
| Folic acid 150 mg/L | 23.4 ± 1.2 b | 11.1 ± 0.6 bc | 17.4 ± 0.7 b | 76.6 ± 2.8 c | 6.84 ± 0.3 bc | 2.03 ± 0.06 bc | 4.82 ± 0.2 b |
| Ascorbic acid 100 mg/L | 25.0 ± 1.5 a | 12.3 ± 0.7 b | 18.6 ± 0.8 a | 79.5 ± 3.3 b | 6.93 ± 0.6 b | 2.07 ± 0.03 b | 4.86 ± 0.3 b |
| Ascorbic acid 200 mg/L | 25.4 ± 1.6 a | 15.9 ± 0.9 a | 18.8 ± 0.7 a | 81.7 ± 3.1 a | 8.49 ± 0.5 a | 2.45 ± 0.07 a | 6.04 ± 0.4 a |
| Salicylic acid 100 mg/L | 19.8 ± 1.2 d | 7.32 ± 0.4 d | 13.5 ± 0.6 d | 65.5 ± 2.0 e | 6.18 ± 0.2 e | 1.86 ± 0.04 e | 4.31 ± 0.2 d |
| Salicylic acid 200 mg/L | 20.9 ± 1.1 c | 7.88 ± 0.4 d | 15.6 ± 0.5 c | 74.8 ± 2.8 d | 6.45 ± 0.3 d | 1.95 ± 0.05 d | 4.50 ± 0.3 c |
Means followed by different letters differ significantly by LSD (p < 0.05).