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Title: Effect of Indigenous Plant Extracts on the Incidence of Scirpophaga incertulas (Walker) (Lepidoptera: Pyralidae) in Kharif Rice Ecosystem
Authors: Yumnam, S
Singh, K I
Ray, D C
Keywords: Rice;Scirpophaga Incertulas;Indigenous Plant Extracts;Efficacy;Yield;Cost Benefit Ratio
Issue Date: Aug-2017
Publisher: NISCAIR-CSIR, India
Abstract: The field evaluation was carried out to determine the efficacy of the plant extracts of eight plant species viz; Vitex trifolia (L.), Melia azedarach (L.), Acorus calamus (L.), Ageratum conyzoides (L.), Artemisia nilagirica (C. B. Clarke), Jatropha gossypifolia (L.), Kegelia pinnata (Dc.) and Lantana camara (L.) with cow-urine and commercial biopesticide Multineem against Sirpophaga incertulas on KD 2-6-3 variety of rice during Kharif season (2012-2013) in Manipur. Cow-urine + J. gossypifolia and Cow-urine + A. nilagirica extracts @7500ml/ha were recorded the least DH (0.97%) and WEH (0.87%) infestations, respectively. However, the highest DH (2.15%) and WEH (2.16%) were recorded from the plot treated with Cow-urine + K. pinnata extract@7500ml/ha over the control plots (4.94% of DH and 3.20% of WEH). The maximum grain yield (6.58 t/ha) was harvested from the plot treated with Cow-urine + A. nilagirica extract with highest cost benefit ratio (1:35.69). However, Multineem (Azadirachtin 300ppm) showed as lowest benefit (1:7.32) because of its less effectiveness and extra cost of insecticide. The bioactivity of A. nilagirica, J. gossypifolia and M. azedarach@7500ml/ha with cow-urine gave more benefit than the commercial plant product against S. incertulas and may be recommended at the agro-climatic conditions of Manipur.
Page(s): 494-500
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.76(08) [August 2017]

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