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Vol. 10, Issue 9 (2021)

Effect of selected botanicals on Alternaria blight of cumin (Cuminum cyminum L.)

K Nageswara Rao, Sobita Simon and Abhilasha A Lal
Cumin (Cuminum cyminum L.) which is locally known as “Jeera” in Hindi is a important spice crop. The most dreaded disease in cumin crop is Alternaria blight which is caused by Alternaria burnsii and it is a major production constraint for the successful cultivation of cumin crop in India. It occurs as small necrotic spots initially and later coalesce to form large brown to black spots. Four botanicals viz., neem oil, thyme essential oil, citronella essential oil and peppermint essential oil along with mancozeb were tested @ 0.2% in vivo during Rabi 2020-2021 for their efficacy against disease, plant growth parameters and yield. Among the botanicals, plant height at 90 DAS (43.20 cm), number of branches per plant (7.40), number of umbels per plant (14.66) and yield (6.03 q/ha) significantly increased and disease intensity at 60 DAS (24.39%) significantly decreased in T4- peppermint essential oil @0.2% followed by T3- citronella essential oil @0.2%, T2- thyme essential oil @0.2% and T1- neem oil @0.2% when compared with T5-mancozeb @0.2% and T0- control (untreated check). Higher gross return value (Rs. 72,360/ha) net return value (Rs. 36,960/ha) B:C ratio (2.04) was found in the treatment T4-peppermint essential oil followed by T3-citronella essential oil, T2-thyme essential oil and T1-neem oil when compared to T5- mancozeb and T0- control.
Pages: 1609-1612  |  259 Views  158 Downloads

The Pharma Innovation Journal
How to cite this article:
K Nageswara Rao, Sobita Simon, Abhilasha A Lal. Effect of selected botanicals on Alternaria blight of cumin (Cuminum cyminum L.). Pharma Innovation 2021;10(9):1609-1612.
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