Effects of Various Weather Factors in Seasonal Variation of Insects Pest in Rice in Sundar Bazar, Lamjung

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Year:
2018
Type of Publication:
Article
Keywords:
Fixed Plot Survey, Gundhi Bug, Monitoring, Pest Forecasting
Authors:
C., R. K. K.; Kafle, K.; Subedi, R.; C., B. K.; Sapkota, B.; Shahi, S.
Journal:
IJRAS
Volume:
5
Number:
4
Pages:
200-204
Month:
July
ISSN:
2348-3997
Abstract:
Rice (Oryza sativa L.) which is one of the major staple crops of world is affected by wide range of insect pest during its growing period. This research was conducted to study the effects of various weather factors in insect pest incidence on kharif season rice (US hybrid 312) in Lamjung Campus. A fixed plot survey was carried out during 22nd of July to 24th of October 2017 on which major insect pest were observed in 20 hills of rice in 332 m2. The study revealed that Rice hispa, white spotted leaf beetle (Monolepta signata) and gundhy bug as a widely distributed insect-pest in rice. Rice hispa showed positive correlation with minimum temperature (r = 0.155) and average relative humidity (r = 0.285). Whereas, white spotted dotted leaf beetle got negative correlation with all weather parameters i.e. (temperature, rainfall and (RH) relative humidity). Similarly, it was found that gundhy bug has significant but negative correlation with minimum temperature (r = -0.600), maximum RH (r = -0.590), minimum RH (r = -0.612), average RH (r = -0.581). Pest forecasting, assessing efficacy of pest, regular monitoring and seemly pest management strategy could be the best option to cope incidence of pest under different weather factors
Full text: IJRAS_699_FINAL.pdf

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