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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present study was planned to evaluate the efficacy of various plant extracts Chenopodium album, Azadirachta indica and Citrus sp. and biocontrol agents Trichoderma viride and Pseudomonas fluorescens against Rhizoctonia solani causing root rot of tomato. Minimum disease incidence and maximum reduction of disease of root rot was observed in Trichoderma viride treatment. Maximum root length (cm) in tomato was recorded at 60 DAT in T1 - Trichoderma viride (23.06 cm), followed by T3 - Azadirachta indica (22.49 cm), T2 - Pseudomonas fluorescens (21.41cm), T5 - Chenopodium album (21.30 cm), T4 - Citrus sp. (20.30 cm), as compared to T7 – Carbendazim (treated) (19.74) and T0 - (untreated checks) (18.13 cm). Maximum shoot length (cm) in tomato was recorded in T1 - Trichoderma viride (53.16 cm), followed by T2 - Pseudomonas fluorescens (50.18 cm), T3 - Azadirachta indica (47.70 cm), T5 - Chenopodium album (48.41 cm), T4 - Citrus sp. (45.14 cm), as compared to T6 – Carbendazim (treated) (52.18 cm) and T0 – untreated checks (43.27 cm). Maximum total length(cm) in tomato was recorded in T1 - Trichoderma viride (76.21 cm), followed by T2 - Pseudomonas fluorescens (71.59 cm), T3 - Azadirachta indica (70.19 cm), T5 - Chenopodium album (69.71 cm) T4 - Citrus sp (65.44 cm), as compared to T6 – Carbendazim (treated) (71.92 cm) and T7 – untreated checks (61.40 cm). Maximum fresh weight (g) in tomato was recorded in T1 - Trichoderma viride (69.36 g),followed by T2 - Pseudomonas fluorescens (68.60 g), T5 – Chenopodium album - (66.83 g), T3 - Azadirachta indica (65.34 g), T4 - Citrus sp. - (64.64 g), as compared to T6 - Carbendazim (treated) (67.99 g) and T0 – untreated checks (63.93 g). Maximum dry weight (g) in tomato was recorded in T1 - Trichoderma viride (37.85 g), followed by T2 - Pseudomonas fluorescens (35.11 g), T5 - Chenopodium album (33.85 g), T3 -- Azadirachta indica (32.77 g), T4 - Citrus sp. - (31.97 g), as compared to T6 - Carbendazim (treated) (34.11 g) and T0 – untreated checks (28.97 g). Maximum yield (t/ha) in tomato was recorded in T1 - Trichoderma viride (22.22 t/ha), followed by T2 - Pseudomonas fluorescens (20.52 t/ha), T5 - Chenopodium album - (19.24 t/ha),T3 - Azadirachta indica (18.41 t/ha), T4 - Citrus sp. - (16.81 t/ha), as compared to T6 - Carbendazim (treated) (19.91 t /ha) and T0 – untreated checks (15.25 t/ha). Among the tested biocontrol agents and plant extracts against Rhizoctonia solani, T. viride was found the most effective against the fungus in reducing root rot of tomato.