Hopper Nilaparvata lugens stal
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The present findings aimed to assess the effect of various doses of silicon in imparting resistance to rice plants against brown plant hopper.
7p trinhthamhodang9 16-12-2020 7 2 Download
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The experiment was conducted in glasshouse to compare the efficacy of Buprofezin 25SC insecticide sold by the different manufacturers under different trade names against brown plant hopper Nilaparvata lugens Stal. (BPH) on rice cultivar TN-1 at Department of Entomology, G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India for two cropping seasons during kharif 2011 and 2012.
5p angicungduoc8 07-11-2020 7 1 Download
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Brown plant hopper (BPH), Nilaparvata lugens Stal is one of the most serious rice pest in India. Growing of resistance varieties is the most effective and environment-friendly strategy for protecting the crop from BPH. In the present study we evaluated the forty entries of plant hopper screening trial against BPH under glass house condition. The trial material was received from All India Coordinated Rice Improvement Programme (AICRIP) DRR, Hyderabad during kharif 2011.
6p angicungduoc8 07-11-2020 14 1 Download
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Three brown planthopper (BPH) resistant (Ratnachoodi, Rajamudi, JBT 36/14) and two susceptible donors (TN 1 and Jaya) of rice were studied at Department of Agricultural Entomology, ZARS, V. C. Farm, Mandya.
6p angicungduoc8 07-11-2020 12 0 Download
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A field trial was conducted to quantify the role of Integrated Pest management (IPM) against brown planthopper Nilaparvata lugens Stal. in the upland rainfed rice growing areas of West Bengal, India during 2002-03 and it was reevaluated during 2017-18.
7p caygaocaolon7 18-09-2020 6 0 Download
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Evaluation of resistance in some rice genotypes against brown Planthopper, Nilaparvata lugens (Stal)
Studies were carried out under glass house conditions to study the evaluation of resistance in some rice genotypes against Brown plant hopper, Nilaparvata lugens. Among the rice genotypes tested against N. lugens (Stal), Ptb 33 (the resistant check) lowest mean damage rating (1.00), while genotypes, PTB 41 exhibited a damage score ranging from (1.00-1.67), when compared to T(N)1 (9.00).The genotypes viz., Co 43, ADT 36, Columbia, Swarna, SR 26B were moderately resistant with damage rating of (3.00-3.67) and the remaining genotypes were moderately susceptible or highly susceptible.
5p angicungduoc6 20-07-2020 26 1 Download
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A glass house experiment was conducted at Department of Entomology, IGKV, Raipur (Chhattisgarh), during 2014-15 to evaluate different rice genotypes for brown planthopper (BPH) resistance. A total of 392 rice genotypes were evaluated, of which 58 were from IRRI, 78 were aromatic types and rest 256 represented the local germplasm. Of 58 rice genotypes from International Rice Research Institute six viz. Ptb 33 (0.17), IR 03A159 (0.45), IR 09N522 (0.66), IR 07A179 (0.67), IR 08N136 (0.90) and IR 09N538 (0.91), were found to be highly resistant to BPH while 32.7% were resistant.
7p kethamoi6 29-06-2020 11 0 Download