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Research Article Open access CC BY 4.0

Effect of Neem Cake, Neem Oil and Plant Extracts on Purple Blotch of Onion (Allium cepa L.) Caused by Alternaria porri (Ellis) Cif.

Arunesh Singh, Abhilasha A. Lal

Journal of Experimental Agriculture International · pp. 612–617 · Published 22 Oct 2024

10.9734/jeai/2024/v46i102984

Abstract

The present study was conducted to evaluate the Effect of neem cake, plant extracts and neem oil on purple blotch of onion (Allium cepa L.) caused by Alternaria porri (Ellis) Cif. Six different treatments were tested in a randomized block design with 3 replications at the Central Research Field, Department of Plant Pathology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj during Rabi season of 2023. The results should that the minimum per cent disease intensity was recorded in T1Neem cake + Neem oil (31.72), T5 Neem cake + Eucalyptus leaf extract (37.40). bulb weight of onion (71.13g), bulb diameter (7.13cm), bulb yield per plot (2.106kg), yield (105.317 q/ha) and benefit cost ratio (1: 4.42) were found in T1Neem cake + Neem oil (31.72) when compared to untreated check and other treatments.

Alternaria porri neem cake neem oil onion plant extract purple blotch

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