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Abstract

Management of Banana (Musa Paradisiaca 1 L) Fruit Rot Diseases using Fungicides

Kedar Nath, Solanky KU and Madhu Bala

Banana suffers from several diseases at all the stages of its life. Finger rot and fruit rot caused by the fungus Lasiodiplodia theobromae (Pat.) Griffth and Maubl are the most important diseases in field as well as post-harvest of banana fruits. In this study, the antifungal activity of total seven fungicides was tested under in-vitro condition against L. theobromae and under in-vivo condition. The results of present study showed that six fungicides at all tested concentrations were a significantly check the fungal growth. At lowest tested concentration (250 ppm) carbendazim and propiconazole were completely inhibited fungal growth. Copper oxychloride at all tested three concentration were stimulated the mycelia growth of L.theobromae. Results of field experiment showed that carbendazim @0.5 gL-1 17 and propiconazole @1mlL-1 18 were completely reduced the percent disease index (PDI) and gave cent percent reduction of the finger rot disease followed by SAAF (97.36%). One hand containing ten fruits were selected from each treated bunch brought to laboratory, kept for ripening under natural Condition up to eating ripening stage the results showed that propiconazole @1mlL-1 21 was highly reduction of PDI (1.50%) and gave highest reduction of fruit rot disease (98.20%) followed by carbendazim (4.005) with increased shelf life of banana fruits. Fruits were dipped in fungicides solution for 2 minutes and kept for ripening results showed that minimum PDI was observed in propicanazole and SAAF (1.00%) treated fruits with 25 maximum reduction of fruit rot disease (98.76%) followed by carbendazim (2.50%) with 96.79 percent reduced fruit rot disease.