Effect of dual applications of spirotetramat, applied 10 and 40 days after inoculation (DAI), on population of Meloidogyne incognita infecting ‘Lovell’ peach under greenhouse conditions 40 and 70 days after inoculation (DAI)_
| 40 DAI | 70 DAI | 70 DAI | 70 DAI | |||||
|---|---|---|---|---|---|---|---|---|
| Treatment | RKN/100 cm3 soila | RKN/potb | RKN/g dry rootc | Rfd | ||||
| Untreated control | 485 | ae | 12,869 | a | 1,672 | a | 0.37 | a |
| Adjuvant as control | 503 | a | 7,440 | a | 1,596 | a | 0.64 | a |
| Spirotetramat at 0.026 kg a.i./ha | 221 | b | 3,427 | a | 328 | a | 0.17 | a |
| Spirotetramat at 0.017 kg a.i./ha | 203 | b | 6,788 | a | 1,301 | a | 0.34 | a |
Effect of spirotetramat, on population densities of Meloidogyne incognita infecting ‘Lovell’ peach under greenhouse conditions 40 and 70 days after inoculation (DAI)_
| 40 DAI | 70 DAI | 70 DAI | 70 DAI | |||||
|---|---|---|---|---|---|---|---|---|
| Treatment | RKN/100 cm3 soila | RKN/potb | RKN/g dry rootc | Rfd | ||||
| Untreated control | 1,162 | ae | 70,250 | a | 13,147 | a | 3.44 | a |
| Adjuvant as control | 1,004 | a | 50,966 | a | 11,253 | a | 2.48 | a |
| Spirotetramat at 0026 kg a.i./ha | 665 | ab | 51,101 | a | 7,173 | a | 2.48 | a |
| Spirotetramat at 0.017 kg a.i./ha | 443 | b | 32,729 | a | 5,862 | a | 1.56 | a |
Effect of fluensulfone, on population densities of Meloidogyne incognita infecting ‘Lovell’ peach under greenhouse conditions 40 and 70 days after inoculation (DAI)_
| 40 DAI | 70 DAI | 70 DAI | 70 DAI | |||||
|---|---|---|---|---|---|---|---|---|
| Treatment | RKN/100 cm3 soila | RKN/potb | RKN/g dry rootc | Rfd | ||||
| Untreated control | 1,162 | ae | 139,697 | a | 20,253 | a | 3.44 | a |
| Fluensulfone at (3.92 kg a.i./ha) | 268 | b | 102,292 | a | 12,221 | a | 1.68 | a |
In vitro assay for the comparison of spirotetramat and fluensulfone on the mobility of Meloidogyne incognita and Mesocriconema xenoplax_
| M. xenoplax | M. incognita | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % Motile nematodesa | % Motile J2 | |||||||||||
| Assay 1 | Assay 2 | Assay 1 | Assay 2 | |||||||||
| Treatment | 24 hrs | 48 hrs | 72 hrs | 24 hrs | 48 hrs | 72 hrs | 24 hrs | 48 hrs | 72 hrs | 24 hrs | 48 hrs | 72 hrs |
| Untreated control | 52.9 ab | 48.9 a | 60.1 a | 56.9 a | 44.8 a | 56.2 a | 94.0 a | 90.9 a | 94.7 a | 98.8 a | 99.3 a | 99.5 a |
| Spirotetramat at 0.017 kg a.i./ha | 36.3 b | 32.1 b | 43.3 b | 47.8 b | 30.5 b | 35.3 b | 94.8 a | 94.0 a | 96.5 a | 98.1 a | 98.5 a | 99.7 a |
| Spirotetramat at 0.026 kg a.i./ha | 33.2 b | 24.7 b | 34.0 b | 32.4 c | 32.1 b | 32.4 b | 93.0 a | 93.9 a | 91.6 a | 98.7 a | 98.4 a | 99.7 a |
| Fluensulfone at 3.92 kg a.i./ha | 17.1 c | 8.05 c | 4.79 c | 28.9 c | 25.5 b | 19.2 c | 48.2 b | 46.2 b | 11.0 b | 65.6 b | 8.56 b | 2.23 b |
Effect of fluensulfone and spirotetramat, on population densities of Mesocriconema xenoplax infecting ‘Nemaguard’ peach under greenhouse conditions 30, 60, and 90 days after inoculation (DAI)_
| 30 DAI | 60 DAI | 90 DAI | 90 DAI | |||||
|---|---|---|---|---|---|---|---|---|
| Treatment | Nematodes/100 cm3 of soila | Rfb | ||||||
| Untreated control | 75 | ac | 194 | a | 1,557 | a | 5.29 | a |
| Adjuvant as control | 137 | a | 138 | a | 1,127 | a | 3.57 | b |
| Spirotetramat at 0.026 kg a.i./ha | 85 | a | 198 | a | 1,071 | a | 3.83 | ab |
| Spirotetramat at 0.017 kg a.i./ha | 84 | a | 99 | a | 1,441 | a | 5.08 | ab |
| Fluensulfone at 3.92 kg a.i./ha | 12 | b | 11 | b | 65 | b | 0.22 | c |