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STUDIES ON THE POPULATION DYNAMICS OF SUGARCANE LEAF HOPPER (Pyrilla perpusilla Walker) AND ITS NATURAL ENEMIES

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Title STUDIES ON THE POPULATION DYNAMICS OF SUGARCANE LEAF HOPPER (Pyrilla perpusilla Walker) AND ITS NATURAL ENEMIES
 
Creator Patre, Ravindra Singh
 
Contributor Soni, V.K.
Dubey, V.K.
Awadhiya, G.K.
Chandrakar, (Smt.) G.
 
Subject POPULATION DYNAMICS,SUGARCANE LEAF HOPPER (Pyrilla perpusilla Walker)
Agricultural Entomology
 
Description Population dynamics of sugarcane leaf hopper (Pyrilla perpusilla Walker) and its natural enemies was studied during 2015-16 at the experimental area of S. K. College of Agriculture & research station and farmer’s field of Kawardha (Kabirdham), Chhattisgarh. During the course of study, The population of sugarcane leaf hopper, P. perpusilla (Walk.) was first occurred during the second fortnight of July with 0.49 eggs, 2.76 nymphs and 2.14 adults per leaf and reached maximum during first fortnight of August with 4.01 eggs, 13.51 nymphs and 13.82 adults per leaf and gradually decreased during second fortnight of September with 0.72 eggs, 0.25 nymphs and 0.07 adults per leaf, respectively. In various abiotic weather parameters, the relative humidity play significantly important role in the fluctuation the population of P. perpusilla.
During pest infestation period, three natural enemies viz. egg parasitoid (Tetrastichus pyrillae Chrawford), nymphal and adult ecto-parasitoid (Epiricania melanoleuca Fletcher) and entomopathogenic Green muscardine fungus, Metarhizium anisopliae (Metschn) has play potential role to suppress the eggs, nymphs and adults population of P. perpusilla, respectively. The egg parasitoid, T. pyrillae was first appeared in first fortnight of October and gradually increasing trend of parasitization at second fortnight of October. The population was disappeared at second fortnight of November. The maximum parasitization was noticed during second fortnight of October with 52.27 per cent parasitization.
The ecto-parasitoid, E. melanoleuca (Fletcher) was first appeared in first fortnight of October and gradually increasing and reached maximum parasitization (48.2 per cent) at first fortnight of November. The parasitoid population disappeared till first fortnight of January.
An entomopathogenic fungus M. anisopliae (Metschn) caused Green muscardine disease in Pyrilla was first noticed in second fortnight of September and gradually increase, and reached maximum parasitization 91.92 and 73.33 per cent nymph and adult at first fortnight of January, respectively.
 
Date 2016-12-15T10:48:32Z
2016-12-15T10:48:32Z
2016
 
Type Thesis
 
Identifier 85 p.
http://krishikosh.egranth.ac.in/handle/1/90260
 
Language en
 
Format application/pdf
 
Publisher Indira Gandhi Krishi Vishwavidyalaya, Raipur