Bio Management of Major Seed Borne Diseases in Sesame

Author: Burri Rachel* and K.N. Gupta

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Abstract

Among the seed borne diseases of sesame, Root and stem rot caused by Macrophomina phaseolina, Alternaria leaf spot caused by Alternaria sesami and Cercospora leaf spot caused by Cercospora sesame are the major destructive diseases. The yield loss due to these diseases was around 57% at about 40% disease incidence. In this study, management of these diseases was done by using bio-agents like Pseudomonas spp. and Trichoderma spp. And it was revealed that seed treatment with a combination of two bio agents i.e., Seed treatment with Trichoderma viride @ 10 g/kg of seed + Pseudomonas fluorescens @ 10 g/kg of seed, furrow application of enriched Trichoderma viride (2.5 kg Trichoderma viride + 100 kg vermicompost) @ 250 kg/ha followed by two sprays of Nimbecidine @ 10ml/l at thinning, flowering and spray of Sulphur @ 2g/l at capsule stage, resulted in less disease incidence and more seed yield under field conditions.

Keywords

Trichoderma viride, Pseudomonas fluorescens, seed borne diseases

Conclusion

In the bio management of seed borne diseases like Root and stem rot, Alternaria leaf blight and Cercospora leaf spot, Among all the treatments, the seed treatment with two different bio agents like Trichoderma vride and Pseudomonas flourescens has shown minimum incidence disease with maximum yield i.e., T6 (Seed treatment with Trichoderma viride @ 10 g/kg of seed + Pseudomonas fluorescens @ 10 g/kg of seed, furrow application of enriched Trichoderma viride (2.5 kg Trichoderma viride + 100 kg vermicompost) @ 250 kg/ha followed by two sprays of Nimbecidine @ 10ml/l at thinning, flowering and spray of Sulphur @ 2g/l at capsule stage) has recorded minimum disease incidence against Root and stem rot (8.33%) and minimum per cent disease index (PDI) for Alternaria leaf spot (5.33%) and Cercospora leaf spot (5.66%) and gave the maximum yield of 615 kg/ ha. The maximum disease incidence of 43.33% for Root and stem rot and maximum per cent disease index of 25.33% for Alternaria leaf blight and 19.00% for Cercospora leaf spot with minimum yield of 260 kg/ ha was identified in the control.

References

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How to cite this article

Burri Rachel and K.N. Gupta (2023). Bio Management of Major Seed Borne Diseases in Sesame. Biological Forum – An International Journal, 15(4): 702-705.