Efficacy of fungicides in managing anthracnose of strawberry
2018
Thind, S.K. | Kaur, Simranjit
Strawberry anthracnose (Colletotrichum gloeosporioides (Penz.) Penz. et Sacc.) is a serious disease for its successful cultivation. The present investigation was carried out at PAU, Ludhiana during the year 2015–16 on the management of the disease with fungicides. Four systemic fungicides namely, propiconazole, carbendazim, azoxystrobin, thiophanate methyl and three non-systemic fungicides viz. mancozeb, copper oxychloride and ziram were evaluated in vitro and in vivo to test their efficacy against anthracnose of strawberry. Among the systemic fungicides, propiconazole was found significantly effective in inhibiting the mycelial growth of C. gloeosporioides with ED₅₀ value of < 5 ppm under in vitro where as mancozeb among non-systemic fungicides, was significantly better than copper oxychloride and ziram in inhibiting the growth of pathogen. The ED₅₀ value of mancozeb was < 25 ppm. The order of ranking of systemic fungicides against Colletotrichum gloeosporioides pathogen was propiconazole < carbendazim < thiophanate methyl <azoxystrobin and for non-systemic was mancozeb < copper oxychloride < ziram. Of the three fungicides viz. propiconazole, carbendazim and mancozeb tested under field condition, three sprays of propiconazole (0.1%) and mancozeb (0.25%) were found significantly effective in controlling the fruit rot of strawberry.
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