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Farming & Management

Identification, phylogeny, pathogenicity and management of Alternaria burnsii (Uppal, Patel & Kamat) causing blight of cumin

 


DOI: 10.31830/2456-8724.2024.FM-138    | Article Id: FM-138 | Page : 41-47
Citation :- Identification, phylogeny, pathogenicity and management of Alternariaburnsii(Uppal, Patel & Kamat) causing blight of cumin. Farm. Manage. 9: 41-47
KAJAL G. MAKAWANA, J. R. TALAVIYA, K. D. SHAH AND S. V. LATHIYA jrtalaviya@jau.in
Address : Department of Plant Pathology, College of Agriculture, Junagarh Agricultural University, Junagadh - 362 001, Gujarat, India
Submitted Date : 21-05-2024
Accepted Date : 2-06-2024
Online Published:

Abstract

Alternaria blight is one of the important diseases of cumin. The disease initiation was observed at nearly one month age of the crop during warm humid weather in the epidemic form at flowering stage and seeds could not mature to full size. The pathogen was isolated by tissue isolation technique. Pathogenicity test was proved by following Koch’s postulates. The pathogen was identified as Alternaria burnsii based on morphological characters and ITS sequencing. The sequence was submitted to gene bank NCBI and it was accepted by NCBI with accession number MT856660. For effective control of cumin blight with fungicides a field experiment was conducted. Efficacy of eight fungicides was tested under field condition for disease intensity and yield of cumin. Among the eight combined and single fungicides, Azoxystrobin 11% + Tebuconazole 18.30% SC at concentration 0.044% was most effective with 14.76% least mean disease intensity and highest yield of 907 kg/ha followed by Metiram 55 % + Pyraclostrobin 5 % WG at concentration 0.18% with 18.27% least mean disease intensity and yield of 889 kg/ha.

Keywords

Alternaria burnsii cumin fungicides pathogenicity

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