Table 6 Effect of bio-control agents, aqueous plant extracts, and citric acid as soil treatment and/or foliar spray on quality parameters of potato tubers under storage conditions
Treatments | Soil treatments | Foliar spray | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dry matter (%) | Reducing sugars (mg/100 g) | Total carbohydrates (%) | Specific gravity (g/cm3) | Starch content (%) | Dry matter (%) | Reducing sugars (mg/100 g) | Total carbohydrates (%) | Specific gravity (g/cm3) | Starch content (%) | |
Bacillus subtilis | 20.8 cd* | 47.3de | 43.0d | 1.07ab | 49.4a | 21.8 cd | 48.1b | 49.7ab | 1.06bc | 42.3d |
Bacillus pumilus | 23.2b | 46.4e | 44.0 cd | 1.08a | 48.2ab | 22.8c | 46.6c | 43.9c | 1.08ab | 50.8a |
Trichoderma harzianum | 23.6b | 50.3abc | 36.7ef | 1.04d | 43.5 cd | 20.4de | 50.7a | 36.6ef | 1.08ab | 47.6Bc |
Trichoderma virens | 20.9 cd | 49.6bc | 38.6e | 1.06bc | 41.8de | 20.6de | 49.5b | 37.7de | 1.05 cd | 45.6 cd |
Lantana | 23.6b | 41.2g | 49.7a | 1.08a | 49.7a | 26.0a | 42.0e | 47.4b | 1.08ab | 50.0ab |
Lemongrass | 19.7de | 42.8 fg | 46.4bc | 1.07ab | 48.2ab | 19.7ef | 43.7d | 44.3c | 1.03de | 50.8a |
Olive cake | 25.1a | 44.5f | 43.3d | 1.02e | 49.4a | 21.7 cd | 44.5d | 45.0c | 1.09a | 50.0ab |
Citric acid | NT | 20.6de | 40.4e | 50.7a | 1.09a | 51.1a | ||||
PDB medium only | 19.7de | 51.4ab | 35.6f | 1.07ab | 45.4c | 19.4ef | 50.1a | 36.0ef | 1.03de | 48.5abc |
NB medium only | 21.9c | 48.8 cd | 48.7ab | 1.05 cd | 40.2e | 24.5b | 48.9b | 39.6d | 1.07abc | 43.9d |
Control | 18.5e | 51.5a | 35.0f | 1.02e | 45.9bc | 18.5f | 51.5a | 35.0f | 1.02e | 45.9 cd |