National Academy of Agricultural Sciences (NAAS)
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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 |
A field experiment was conducted at the research plot of the Department of Plant Pathology, SHIATS, Allahabad, U.P. during the Rabi season of 2013-14 to evaluate selected bioagents, plant extracts and fungicides for the management of Alternaria blight of Indian mustard (Brassica juncea L.) by applying foliar sprays of certain fungicides plant extract and bio-agents. Per cent disease intensity on leaves at 75 DAS, per cent Alternaria pod blight at 90 DAS, test weight (g/1000 seeds) and yield (q/ha) were recorded. Results revealed that foliar spray of mancozeb at 75 DAS recorded lowest per cent disease intensity on leaves (36.76) and pods (20.53) as compared to control (61.03 and 37.9, respectively). The same treated recorded maximum plant height at 60 DAS and 90 DAS (106.66 cm and 162.6 cm, respectively). Maximum test weight of 1000 seeds and yield q/ha were also in the same treatment (5.04g and 13.38q/ha., respectively) as compared to the control (4.11g and 9.04 q/ha., respectively). Results showed that the foliar spray of mancozeb @ 2.5g/l significantly reduced Alternaria blight, increased yield and was the most effective treatment, followed by garlic bulb extract @ 15% (w/v), neem leaf extract@ 15% (w/v), Trichoderma harzianum@ 10g/l, carbendazim 50 WP @ 2g/l and Pseudomonas fluorescens @ 10g/l. However, the treatments viz. garlic bulb extract, neem leaf extract were at par with the mancozeb treatment in reducing the disease intensity and increasing the yield (q/ha). In future these botanicals can be taken up to minimize the losses caused by this disease.
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