Alberto R T1 Author

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Chemical Management of Anthracnose-Twister (Colletotrichum gloeosporioides Penzig and Sacc-Gibberella moniliformis Wineland) Disease of Onion (Allium cepa L.)

Author(s):

Alberto R T¹, Perez PM²

Among all other diseases of onion, anthracnose-twister caused by Colletotrichum gloeosporioides and Gibberella moniliformis remained the most destructive every cropping season. It destroys onion production especially when left unmanaged. Studies showed that chemical management is still the best option in addressing this disease, thus this study was conducted. It aimed to: (a) evaluate the different protectant fungicides available in the market in managing the disease; (b) test Paclobutrazol in suppressing the rapid production of gibberellic acid that triggers the development of the disease; and (c) compare the performance of Paclobutrazol and other fungicides in suppressing the disease when applied as preventative and curative.

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