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Journal of Entomological Research
Year : 2024, Volume : 48, Issue : 1
First page : ( 64) Last page : ( 67)
Print ISSN : 0378-9519. Online ISSN : 0974-4576.
Article DOI : 10.5958/0974-4576.2024.00014.8

Population dynamics of insect pest associated with barnyard millet in Bihar

Giri Gouri Shankar*, Kishor Kaushal1, Mishra Sweta1, Kumar Neeraj1

Tirhut College of Agriculture, Dholi, Muzaffarpur, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur - 848 125, Bihar, India

1PG College of Agriculture, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur - 848 125, Bihar, India

*Corresponding authors' E-mail : gsgiri@rpcau.ac.in

Online published on 4 March, 2024.

Abstract

During the period of investigation, the crop at its early growth period was found to be infested by shoot fly whereas the infestation of ear head bug and stem borer was recorded in late vegetative stage to maturity stage. The infestation of grasshopper was initiated during early vegetative stage and continued up to maturity stage. It was observed that per cent dead heart caused by shoot fly and stem borer had a negative and significant relation with the morning relative humidity whereas per cent dead heart caused by stem borer had a negative and significant relation with minimum temperature and evening relative humidity. The population of grass hopper had a negative and significant relation with the morning relative humidity.

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Keywords

Barnyard millet, Ear head bug, Echinochloa esculenta, Grass hopper, Shoot fly, Stem borer.

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