Table 1.
Effect of Nicotinamide adenine dinucleotide (NAD) on root-knot nematode, Meloidogne incognita infection and plant growth on tomato (Solanum lycopersicon L.) cultivar HM 1823 in growth room experiment, Sep-Dec, 2018.
| NAD treatments | J2 penetration (2 DAI) | Gall rating (0-10) (30 DAI) | Egg mass/g root (30 DAI) | Shoot weight (g) (30 DAI) | Root Weight (g) (30 DAI) |
|---|---|---|---|---|---|
| Control | 85a | 3.3ab | 159a | 3.93c | 0.74bcd |
| 1 mM Pre | 41d | 3.1abc | 88c | 4.74a | 0.86a |
| 0.1 mM Pre | 61bc | 2.8bc | 77c | 4.38abc | 0.80abcd |
| 0.01 mM Pre | 74ab | 3.6a | 98c | 4.11bc | 0.70d |
| 1mM Pre + Post | 47cd | 2.9bc | 129b | 4.85a | 0.81abc |
| 0.1 mM Pre + Post | 73ab | 2.7bc | 100bc | 4.15bc | 0.73cd |
| 0.01 mM Pre + Post | 45cd | 3.4ab | 104bc | 4.35abc | 0.81abc |
| 1 mM Post | 48cd | 2.6c | 96c | 4.56ab | 0.83ab |
| P-value | <.0001 | 0.026 | 0.0003 | 0.0071 | 0.03 |
Figure 1:
Effect of 1mM Nicotinamide adenine dinucleotide (NAD) applied as a pre-, post- or pre+post- plant drench application on plant height of tomato (Solanum lycopersicon L.) cv. HM1823 in the greenhouse; pre = NAD treatment 1 day before transplanting; post = NAD treatment 1 day after transplanting; pre+post = NAD treatment 1 day before and 1 day after transplanting; DAT = days after transplanting. Factor levels sharing the same letter within each time point do not differ significantly (P-value > 0.05), according to Tukey’s HSD.
Table 2.
Effect of 1mM Nicotinamide adenine dinucleotide (NAD) on root-knot nematode, Meloidogne incognita severity and plant biomass of tomato (Solanum lycopersicon L.) cultivar HM 1823 in the greenhouse, Gulf Coast Research and Education Center (GCREC), Feb–May, 2019.
| Gall rating (0–10) | Eggs/g root | Dry root weight | Dry shoot weight | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Treatments | 60 DAT | 105 DAT | 60 DAT | 105 DAT | 60 DAT | 105 DAT | 60 DAT | 105 DAT | Total fruit yield (kg) |
| Control | 4.0a | 8.3a | 54688a | 291536a | 3.76a | 4.41a | 26.12a | 54.21a | 1.29a |
| Pre + Post | 2.9b | 7.2b | 27393b | 269600a | 4.00a | 4.88a | 28.99a | 53.83a | 1.28a |
| Post | 3.3b | 8.1a | 41353a | 276340a | 3.70a | 5.21a | 27.89a | 60.48a | 1.26a |
| Pre | 3.4b | 8.0a | 45705a | 278300a | 4.33a | 4.67a | 28.40a | 57.96a | 1.25a |
| P-value | 0.0021 | 0.0001 | 0.007 | 0.89 | 0.214 | 0.833 | 0.230 | 0.507 | 0.986 |
Table 3.
Root gall ratings of tomato (Solanum lycopersicon L.), root-knot nematode, Meloidogne incognita population in soil, and tomato fruit yield as affected by fumigants and Nicotinamide adenine dinucleotide (NAD), field trial-spring 2020, Gulf Coast Research and Education Center (GCREC), FL.
| Root-knot severity (0–10 scale) | J2s/200 cc soil | Tomato Yield (kg/plot) | ||||||
|---|---|---|---|---|---|---|---|---|
| Factors | Level | 69 DAT | 105 DAT | 105 DAT | 77 DAT | 94 DAT | 103 DAT | Total yield |
| None | 3.23a | 5.77a | 60a | 16.96b | 12.86a | 5.13a | 34.96b | |
| Fumigant | Pic 100 | 1.65b | 5.34a | 82a | 22.92b | 13.78a | 5.44a | 42.15a |
| Pic-Clor 60 | 0.08c | 0.53b | 7b | 21.67a | 12.44a | 6.23a | 40.35ab | |
| None | 1.16a | 4.16a | 46a | 19.76a | 12.43a | 7.06a | 39.26a | |
| NAD | 1mM | 1.89a | 3.27a | 49a | 20.06a | 13.40a | 5.54a | 39.20a |
| 5 mM | 1.91a | 4.22a | 55a | 21.73a | 13.26a | 4.20a | 39.01a | |
| Fumigant | <.0001 | <.0001 | 0.0005 | 0.005 | 0.796 | 0.763 | 0.106 | |
| P-value | NAD | 0.290 | 0.535 | 0.423 | 0.459 | 0.875 | 0.201 | 0.996 |
| Fumigant*NAD | 0.824 | 0.678 | 0.366 | 0.105 | 0.500 | 0.738 | 0.322 | |
Table 4.
Root gall ratings of tomato (Solanum lycopersicon L.), root-knot nematode, Meloidogne incognita population in soil, and tomato fruit yield as affected by fumigants and Nicotinamide adenine dinucleotide (NAD), field trial-fall 2020, Gulf Coast Research and Education Center (GCREC), FL.
| Root-knot severity (0–10 scale) | J2s/200 cc soil | Tomato Yield (kg/plot) | ||||||
|---|---|---|---|---|---|---|---|---|
| Fumigant | NAD | 53 DAT | 97 DAT | 97 DAT | 68 DAT | 82 DAT | 96 DAT | Total yield |
| None | 3.28a | 5.24a | 361a | 1.56c | 5.99b | 9.90a | 17.46b | |
| Fumigant | Pic 100 | 0.26b | 0.46b | 15b | 5.51b | 10.53a | 11.06a | 27.11a |
| Pic-Clor 60 | 0.06b | 0.15b | 8b | 8.79a | 8.51ab | 12.45a | 29.76a | |
| None | 1.04a | 2.04a | 217a | 5.06a | 8.53a | 12.13a | 25.74a | |
| NAD | 5 mM | 1.51a | 2.20a | 133a | 5.14a | 7.47a | 10.65a | 23.27a |
| 10 mM | 1.06a | 1.62a | 35a | 5.66a | 9.03a | 10.63a | 25.32a | |
| Fumigants | <.0001 | <.0001 | <.0001 | <.0001 | 0.024 | 0.160 | <.0001 | |
| P-value | NAD | 0.474 | 0.409 | 0.591 | 0.763 | 0.569 | 0.412 | 0.393 |
| Fumigants*NAD | 0.275 | 0.213 | 0.060 | 0.824 | 0.798 | 0.254 | 0.758 | |
Figure 2:
Effect of Nicotinamide adenine dinucleotide (NAD) on soil root-knot nematode, Meloidogne incognita population in fumigated and non-fumigated beds, field trial, fall, 2020. Factor levels sharing the same letter do not differ significantly (P-value > 0.05), according to Tukey’s HSD.
Figure 3:
Effect of Nicotinamide adenine dinucleotide (NAD) on early tomato (Solanum lycopersicon L.) fruit production at 77 DAT in fumigated and non-fumigated beds; field trial spring 2020; DAT = days after transplanting. Factor levels sharing the same letter do not differ significantly (P-value > 0.05), according to Tukey’s HSD.