Efficacy of Botanical Extracts Against Rice Stem Borer Scirpophaga Incertulas (Walker)

Efficacy of botanical extracts was evaluated against the rice stem borer Scirpophaga incertulas (Wlk.) at PAJANCOA and RI, Karaikal during kharif 2019 and rabi 2019-2020. The results revealed that thiamethoxam 25WG @ 100 g/ ha reduced incidence to 4.99% and 4.13% (52.15 and 61.80% reduction, respectively). Among the botanicals, garlic and chilli extract 5% reduced this to 5.69% and 5.48%. The predatory coccinellids and spiders were more in untreated check and it was found at par with garlic and chilli extracts at 5%, followed by five leaf extracts @10% and bitter apple leaf extract 10%. The benefit cost ratio (BCR) was maximum with thiamethoxam 25WG @ 100 g/ ha (1: 1.67 and 1: 2.10), followed by garlic and chilli extract 5% (1: 1.59 and 1:1.91).

[1]  L. Mohapatra.  Field evaluation of ITKs against insect pests of rice , 2018 .

[2]  J. G. M. Sahito,et al.  Impact of botanical pesticides against sucking insect pests and their insect predators in brinjal crop , 2018 .

[3]  B. Naik,et al.  Efficacy of some insecticides against major insect pests of rice, Oryza sativa L. , 2017 .

[4]  R. Kumar,et al.  Bio Efficacy of Botanical Insecticides against Defoliators Pests on Soybean , 2017 .

[5]  M. B. Mochiah,et al.  Comparing the Effectiveness of Garlic (Allium sativum L.) and Hot Pepper (Capsicum frutescens L.) in the Management of the Major Pests of Cabbage Brassica oleracea (L.) , 2016 .

[6]  N. Tuan,et al.  Efficacy of Garlic and Chili Combination Solution on Cabbage Insect Pests and Crop Growth in Vietnam , 2014 .

[7]  T.Rani.  Studies on the Efficacy of Certain Botanicals and their Compatibility with Myco Insecticides in the Management of Key Insect Pests on Rice , 2013 .

[8]  M. K. Jat,et al.  Effect of the farmers plant protection practices on natural enemies of insect pests in cotton , 2013 .

[9]  H. Qadri.  Bio-efficacy of amalgamated plant extracts against thrips,Pseudodendrothrips mori (Niwa) on mulberry , 2012 .

[10]  C. Echereobia,et al.  Determination of repellence potentials of some aqueous plant extracts against okra flea beetles Podagrica uniforma. , 2010 .

[11]  A. Prakash,et al.  FUTURE OF BOTANICAL PESTICIDES IN RICE, WHEAT, PULSES AND VEGETABLES PEST MANAGEMENT , 2008, Journal of Biopesticides.

[12]  C. Mallapur,et al.  Management of chickpea pod borer, Helicoverpa armigera (Hubner) using indigenous materials. , 2004 .

[13]  K. A. Gomez,et al.  Statistical Procedures for Agricultural Research. , 1984 .

[14]  G. Sprague,,et al.  Statistical Methods For Agricultural Workers , 1956 .