Table 1.
Average number of spores per juvenile of Meloidogyne javanica (M.j.) and M. incognita (M.i.) exposed to spores of Pasteuria penetrans (Pp blend) which had been previously incubated for 1, 7, and 21 days in the nematicides fluazaindolizine and oxamyl.
| Experiment 1 | Experiment 2 | Experiment 3 | |||
|---|---|---|---|---|---|
| Treatments | M.j. | M.i. | M.j. | M.i. | M.j. |
| Control (Pp untreated) | 3.88 bc | 6.22 cd | 3.42 e | 1.86 cd | 15.50 ab |
| Fluazaindolizine 5 ppm | |||||
| 1 day | 3.46 c | 8.72 ab | 6.04 cde | 1.14 cd | 14.60 abc |
| 7 days | 5.20 abc | 8.72 ab | 7.56 bcd | 1.86 cd | 17.92 a |
| 21 days | 4.26 bc | 7.52 bcd | 12.70 a | 1.90 cd | 15.92 ab |
| Fluazaindolizine 50 ppm | |||||
| 1 day | 7.06 a | 10.04 a | 3.68 e | 1.02 d | 17.96 a |
| 7 days | 4.90 bc | 7.72 bcd | 6.58 bcde | 1.68 cd | 11.70 c |
| 21 days | 5.74 ab | 7.88 bcd | 9.76 abc | 3.64 b | 16.22 ab |
| Fluazaindolizine 250 ppm | |||||
| 1 day | 15.32 abc | ||||
| 7 days | 14.66 abc | ||||
| 21 days | 13.64 bc | ||||
| Oxamyl 25 ppm | |||||
| 1 day | 4.94 bc | 6.16 d | 3.72 e | 1.40 cd | |
| 7 days | 4.18 bc | 6.40 cd | 4.78 de | 2.32 c | |
| 21 days | 5.42 abc | 8.04 bc | 10.04 ab | 6.14 a | |
| Spores/dish (× 103) | 20 | 20 | 20 | 20 | 15 |
| J2/dish | 180 | 180 | 300 | 550 | 100 |
| Incubation period | 24 h | 24 h | 48 h | 48 h | 24 h |
Table 2.
Average number of spores per juvenile of Meloidogyne incognita and M. javanica exposed to spores of Pasteuria penetrans (Pp) which had been previously incubated for 1, 7, and 21 days in the nematicides fluazaindolizine and oxamyl.
| Pp 3 | Pp blend | |||||
|---|---|---|---|---|---|---|
| Incubation period | ||||||
| Treatments | 1 day | 7 days | 21 days | 1 day | 7 days | 21 days |
| Experiment 4 | ||||||
| M. incognita | ||||||
| Control (Pp untreated) | 1.26 c | 1.64 b | 3.46 b | 0.78 c | 2.86 a | 0.32 b |
| Fluazaindolizine 50 ppm | 2.84 b | 1.50 b | 3.36 b | 0.98 bc | 2.42 a | 1.06 a |
| Fluazaindolizine 250 ppm | 4.28 a | 2.48 a | 4.08 b | 1.28 ab | 2.20 a | 1.08 a |
| Oxamyl 50 ppm | 4.68 a | 2.76 a | 5.02 a | 1.33 a | 2.38 a | 0.94 a |
| Spores/dish (× 103) | 20 | 20 | 20 | 10 | 15 | 20 |
| J2/dish | 320 | 550 | 550 | 1,000 | 170 | 1,150 |
| Incubation period | 24 h | 24 h | 24 h | 48 h | 48 h | 48 h |
| Experiment 5 | ||||||
| M. javanica | ||||||
| Control (Pp untreated) | 4.54 b | |||||
| Fluazaindolizine 50 ppm | 5.28 b | |||||
| Fluazaindolizine 250 ppm | 4.66 b | |||||
| Oxamyl 50 ppm | 7.70 a | |||||
| Spores/dish (× 103) | 15 | |||||
| J2/dish | 550 | |||||
| Incubation period | 24 h | |||||
| Experiment 6 | ||||||
| M. javanica | ||||||
| Control (Pp untreated) | 2.58 c | 4.16 b | 3.56 c | 3.88 b | 3.58 c | 2.34 c |
| Fluazaindolizine 50 ppm | 3.60 b | 3.96 b | 4.38 b | 4.02 b | 4.82 b | 2.96 b |
| Fluazaindolizine 250 ppm | 4.02 ab | 3.78 b | 4.74 b | 4.10 b | 5.16 ab | 3.00 b |
| Oxamyl 50 ppm | 4.30 a | 4.80 a | 5.42 a | 5.90 a | 5.86 a | 4.46 a |
| Spores/dish (× 103) | 20 | 20 | 20 | 10 | 6 | 8 |
| J2/dish | 1,000 | 1,000 | 700 | 350 | 300 | 400 |
| Incubation period | 48 h | 48 h | 48 h | 48 h | 48 h | 48 h |
Table 3.
Number of egg masses per gram of root of tomato plants infected with juveniles of Meloidogyne incognita and M. javanica pre-exposed to spores of Pasteuria penetrans (Pp 3).
| Pp 3 | ||
|---|---|---|
| Incubation period | ||
| Treatments | 7 days | 21 days |
| Experiment 4 | ||
| M. incognita | ||
| Control without Pp | 55.50 a | 49.60 a |
| Pp untreated | 10.50 b | 42.60 ab |
| Fluazaindolizine 50 ppm | 19.90 b | 19.10 c |
| Fluazaindolizine 250 ppm | 3.50 b | 31.40 abc |
| Oxamyl 50 ppm | 20.70 b | 24.90 bc |
| Experiment 6 | ||
| M. javanica | ||
| Control without Pp | 103.43 a | 86.89 a |
| Pp untreated | 62.70 ab | 72.55 ab |
| Fluazaindolizine 50 ppm | 59.40 ab | 57.31 bc |
| Fluazaindolizine 250 ppm | 47.29 b | 48.23 c |
| Oxamyl 50 ppm | 79.56 ab | 59.65 bc |
1 Notes: Each mean is the average of five replicates; means within columns followed by the same letter are not significantly different according to LSD test (p > 0.05); the labels Experiment 4 and 6 indicate that J2 encumbered with spores from the respective in attachment experiments presented in Table 2 were used for plant inoculation.