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Sweet Corn Disease NurseryStewart's Bacterial Wilt, Erwinia stewartii |
Table 1. Level of Stewart's wilt control (%)a from seed treatment insecticides applied to Jubilee sweet corn planted in earlyb and latec trials in Urbana and Manito, IL in 2000.
Treatment and rate |
Urbana -early | Manito - early | Urbana - late | Manito - late | |||||
6-01 | 6-15 | 6-02 | 6-22 | 7-10 | 7-20 | 8-04 | 7-25 | 8-09 | |
Adage 50 | 73% | 64% | 76% | 72% | 64% | 58% | 66% | 61% | 56% |
Adage 100 | 71 | 71 | 84 | 79 | 71 | 59 | 65 | 59 | 63 |
Adage 200 | 70 | 75 | 85 | 93 | 67 | 61 | 73 | 72 | 73 |
Adage 250 | 71 | 74 | 88 | 85 | 71 | 62 | 71 | 68 | 72 |
Gaucho 3.2 | 72 | 70 | 84 | 75 | 70 | 56 | 67 | 74 | 70 |
Gaucho 4.8 | 77 | 72 | 83 | 80 | 76 | 62 | 69 | 73 | 75 |
Gaucho 6.4 | 79 | 79 | 89 | 85 | 79 | 65 | 70 | 74 | 70 |
G2 2.4 | 77 | 75 | 91 | 91 | 72 | 67 | 73 | 71 | 65 |
G2 4.8 | 81 | 87 | 91 | 94 | 76 | 66 | 71 | 74 | 73 |
BLSD (k=100) | 9.2 | 12.3 | 10.7 | 7.7 | 12.1 | ns | ns | ns | ns |
a Level of control (%) = [1 - (incidence of systemic Stewart's wilt in treated plots/incidence of systemic Stewart's wilt in non-treated control plots)] x 100. b Early trials planted 26 and 27 April in Manito and Urbana, respectively. c Late trials planted 19 and 22 June in Urbana and Manito, respectively. |