| Effect of
fungicidal seed treatment and foliar sprays on early blight incidence,
fruit characters and yield of tomato cv. Pusa Ruby. |
| Singh, N.
K.,Saxena, R. P.,Jaiswal, R. C.,Pradeep Kumar |
| Department of
Vegetable Science, N.D. University of Agriculture & Technology,
Kumarganj, Faizabad - 224 229, India. |
| The efficacy
of fungicidal seed treatments (soaking seeds for 12 h in aqueous
solution of 0.1% Bavistin [carbendazim], 0.2% Vitavax [carboxin], 0.2%
Baycor [bitertanol], 0.2% thiram, 0.2% Dithane M-45 [mancozeb], and 0.1%
Bavistin+0.2% Vitavax) and foliar sprays (0.2% Dithane M-45, 0.2%
Baycor, 0.3% Blitox-50, and 0.5% boric acid) on early blight (caused by
Alternaria solani ) incidence and tomato cv. Pusa Ruby yield was
investigated in Faizabad, Uttar Pradesh, India. Seeds treated with
fungicides were sown in the nursery. Fungicide spraying was conducted
thrice (i.e. at the time of disease appearance and twice thereafter at
15-day interval) under field conditions. The initial disease appearance
in seed-treated plants was observed at 60-69 days after sowing (DAS).
The lowest percent disease index and highest percent disease control
(PDC) at 177 DAS were recorded for 0.1% Bavistin, 0.1% Bavistin+0.2%
Vitavax, 0.2% thiram, and 0.2% Vitavax. The highest average fruit yield
(357.46 q/ha) was obtained with 0.2% Baycor. The first appearance of
early blight in plants sprayed with fungicides was registered at 64-68
DAS. PDC (75.27%) and fruit yield (375.50 q/ha) were highest in plots
sprayed with 0.2% Dithane M-45. |
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