International Journal of Plant Protection

Dharmendra Kumar ¹, M. Raghuraman ¹, Janardan Singh ², Showkat A. Waza ³, Kaushal Kumar

Affiliations
1 Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi U.P., IN
2 Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi U.P., IN
3 Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi U.P., IN

Abstract

The present survey was conducted during Kharif 2011 and Kharif 2012 in Varanasi district of Uttar Pradesh, India. Twenty six insect-pests and natural enemies of crop plants, belonging to 9 different orders (including Acarina group) were recorded in the rice (Oryza sativa L.) agroecosystem. The maximum percentage of insect-pests and natural enemies were recorded in the order Coleoptera (23.10%), followed by Lepidoptera (15.40%), Homoptera, Isoptera and Thysanoptera. Insect pests viz., yellow stem borer, green leaf hopper and gundhi bug were highest in proportion, whereas rest others were found to be medium or low in proportion. Among natural enemies and predators, rove beetles, tiger beetles, carabid beetles, damsel flies and dragon flies were recorded from the rice agro-ecosystem.Fkh

Keywords

Coleopteran, Dragon Fly, Rice, Yellow Stem Borer

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Paidi Satyanarayana ¹, M. Raghuraman ¹, Santeshwari ¹

Affiliations
1 Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN

Abstract

Field experiment was conducted at Banaras Hindu University research farm, Varanasi, on hybrid rice variety PHB 71 during Kharif season of 2012 to study impact of granular formulation of phenyl pyrazole on rice yellow stem borer, Scirpophaga incertulas (Walker). Results revealed that in terms of efficacy against stem borer, overall performance of various spraying insecticidal treatments based on the mean indicated that treatment with Fipronil 0.6 per cent GR @ 60g a.i./ha was the most effective and significantly superior over all other treatments in reducing the dead hearts to minimum level of 3.40 per cent. Fipronil 0.6 per cent GR @ 50g a.i./ha stood second in order of effectiveness which recorded 4.45 per cent dead hearts. The Carbofuran 3 GR @ 750g a.i./ha. proved least effective in which higher per cent of dead hearts of 5.08 were observed. The untreated control recorded 6.88 per cent dead hearts.

Keywords

Fipronil, Phenyl Pyrazole, Yellow Stem Borer, Scirpophaga Incertulas

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Sandeep Chaudhary ¹, M. Raghuraman ¹

Affiliations
1 Department of Entomology and Agricultural Zoology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi (U.P.), IN

Abstract

An experiment was conducted during Kharif season of 2012, at the Agricultural Research Farm of Banaras Hindu University, Varanasi to evaluate the efficacy of chitin synthesis inhibitor, buprofezin in combination with acephate at different doses against the brown plant hopper and Gundhi bug in rice ecosystem. The treatments were sprayed thrice after transplanting. Results showed that among all the treatments, Buprofezin 15 per cent + Acephate 35 per cent WP was most effective against both the sucking pests and conversely protected the crop. When applied at 1500 ml/ha, the mixture significantly suppressed the population of BPH to 3.89 per 5 hills and gundhi bug to 1.66 per five sweeps. It also significantly increased the yield of rice (57%) over untreated control.

Keywords

Bph, Gundhi Bug, Buprofezin, Rice

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