Screening of fungicides and plant extracts in controlling leaf spot and anthracnose diseases of Rauwolfia serpentina (L.) Benth. ex Kurz
Keywords:
screening, Fungicide, Plant extract, Leaf spot, Anthracnose, Rauwolfia serpentinaAbstract
Field experiment was conducted to evaluate the efficacy of two fungicides and two plant extracts against leaf spot and anthracnose diseases of Rauwolfia serpentina Benth. ex Kurz in Botanical research garden, Department of Botany, University of Dhaka. Both the fungicides Autostin 50WPG and Tilt 250EC and leaf extracts shows effective management of the disease over untreated check. However, among the treatments Autostin and Tilt at 100 ppm concentration and Azadiracta indica and Citrus limon at 10% concentration was found significantly superior in controlling the disease severity, PDI (Percent disease index) and increasing number of healthy leaves. Number of healthy leaves which was highest per plant 79.55 in 2016 and 52.00 in 2017.
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