Impact of microbial rivals and natural alterations on root decay and plant development in sesame

In this experiment, natural alteration of the sesame rhizosphere was done by combining organic products such as neem cake, farmyard manure, and two microbial antagonists and testing their efficacy against root rot disease, which affects sesame plant growth and yield. All the treatments showed a sign...

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Bibliographic Details
Published in:	Indian phytopathology Vol. 75; no. 4; pp. 1075 - 1083
Main Authors:	Khamari, Bhagyashree, Hasmi, Safdar Kaiser, Samal, Kailash Chandra, Sahoo, Jyoti Prakash, Senapati, Akshya Kumar, Ranasingh, Nirakar, Beura, Surjya Kanta, Samal, Tribikram
Format:	Journal Article
Language:	English
Published:	New Delhi Springer India 01-12-2022
Subjects:	Biomedical and Life Sciences Life Sciences Plant Pathology Research Article Root rot Antagonist Organic amendments Rhizosphere alteration Sesame
Online Access:	Get full text
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Summary:	In this experiment, natural alteration of the sesame rhizosphere was done by combining organic products such as neem cake, farmyard manure, and two microbial antagonists and testing their efficacy against root rot disease, which affects sesame plant growth and yield. All the treatments showed a significant reduction in plant mortality and disease progression compared to control. Natural alteration such as seed treatment with a mixture of Trichoderma viride and Pseudomonas fluorescens (5 g/kg each) and soil amended with neem cake (250 kg/ha) as well as Pseudomonas - Trichoderma fortified FYM (25 g/kg each) recorded the highest mean efficacy (72.39%) in reducing disease incidence, registering the least plant mortality (8.2%) as compared to control (29.7%) and treated control, Carbendazim (20.4%). It also enhanced the seed yield as high as 28.02% over control, augmenting plant growth such as shoot length (118.92 cm), root length (12.53 cm), and the number of branches/plant (7.40) and capsules/plants (11.46) with an ICBR of 1.88. The yield was negatively correlated with per cent plant mortality (r = − 0.96) and the progression of disease incidence expressed by AUDPC (r = − 0.69). A negative relationship existed between per cent disease incidence and plant traits such as shoot length, root length, number of branches/plant and number of capsules/plant, recording correlation coefficients of − 0.91, − 0.78, − 0.69 and − 0.90, respectively. Seed treatment with microbial antagonists and modification of the sesame rhizosphere by co-application of neem cake and Trichoderma-Pseudomonas fortified FYM suppressed macrophomina root rot disease and enhanced the yield, which could be a feasible option for sesame growers.
ISSN:	0367-973X 2248-9800
DOI:	10.1007/s42360-022-00552-2