Integrated management of Onion Purple blotch Complex

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Purple Blotch Complex (PBC) of onion caused by Alternaria porri (Ellis) Cif. and Stemphylium vesicarium (Wallr.) Simmons is of common occurrence in the onion growing areas of Punjab. The low productivity of onion in India is chiefly attributed to the prevalence of Purple leaf blotch and Stemphylium leaf blight in almost all the onion cultivated areas of Northern and Eastern regions. In view of the economic importance of the crop and effect of the disease complex on yield and quality, our investigation hinged with effective management of the disease complex of onion generated instrumental findings which would be useful in devising an integrated disease management approach.


Ritesh Yadav


A young, energetic agriculturist and plant pathologist by training with more than 4.5 years of diverse research experience in integrated management of various crop diseases, phenotypic characterization, genetic diversity assessment & evaluation of crops, participatory crop improvement and experience in proposal development and budget management.

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LAP LAMBERT Academic Publishing


Integrated management; purple blotch complex; onion alternaria porri; stemphylium vesicarium; In vitro evaluation of fungicides; In vivo evaluation of fungicides; potato dextrose agar medium; difenoconazole;

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SCIENCE / Horticulture