Vol. 6, Issue 3 (2018)
Management of leaf spot and flower blight of marigold caused by Alternaria tagetica (Shome and Mustafee) under field condition
Author(s): Mahadev Shindhe, Narayanaswamy H, Nagaraja H and Murali R
Abstract: Leaf spot and flower blight caused by Alternaria tagetica (Shome and Mustafee) is one of the important diseases of marigold, which causes upto 50 to 60% losses in yield. In this present investigation, different fungicides, botanicals and bio-agents were evaluated under field condition. The results revealed that, Hexaconazole (0.1%) was found effective in reducing the percent disease index (32.15) on leaves and (33.76) on flower in all three sprays and getting higher yields (6.96 t/ha) followed by Mancozeb (0.2%) with PDI of (34.53) on leaves and (35.45) on flower with yield of (6.81 t/ha) as compared to control with (85.02 and 86.11 PDI) on leaves and flower respectively with yield of (4.26 t/ha). Among botanicals, Nimbicidin (0.5%) was effective in minimizing the percent disease index (14.80) on leaves and (16.81) on flowers and yield (4.81 t/ha). Trichoderma harzianum (5g/l) was effective in minimizing the percent disease index (17.07) on leaves and (17.37) on flowers and recorded yield (5.26 t/ha).
Pages: 3082-3084 | 686 Views 142 Downloads
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How to cite this article:
Mahadev Shindhe, Narayanaswamy H, Nagaraja H, Murali R. Management of leaf spot and flower blight of marigold caused by Alternaria tagetica (Shome and Mustafee) under field condition. Int J Chem Stud 2018;6(3):3082-3084.
