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Evaluation of nymphicidal and ovicidal effect of a seaweed, <i style="">Padina pavonica</i> (Linn.) (Phaeophyceae) on cotton pest, <i style="">Dysdercus cingulatus </i>(Fab.)

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Title Evaluation of nymphicidal and ovicidal effect of a seaweed, Padina pavonica (Linn.) (Phaeophyceae) on cotton pest, Dysdercus cingulatus (Fab.)
 
Creator Sahayaraj, K.
Kalidas, S.
 
Subject Seaweed
Cotton pest
Nymphicide
Ovicide
Macro molecule
 
Description 125-129
Impact of brown
seaweed, Padina pavonica (Linn.) chloroform, and benzene extracts were
evaluated against an economically important cotton pest, Dysdercus cingulatus
(Fab.) (Pyrrhocoridae). The result reveled that between the two solvents,
benzene extracts of P. pavonica caused more nymphal mortality. It reduce
D. cingulatus egg hatchability than chloroform extract. Benzene
extract also reduced the survival rate of D. cingulatus eggs from 53.33
to 0.00 per cent for 0.025 to 0.4% concentration of P. pavonica benzene extract respectively. P.
pavonica extracts also significantly reduced the total body protein (22 to
39%) and DNA (27 to 30%) content. Presence of saponin, steroids and phenolic
compounds in the extract might be the reason for these activities. It is
concluded that P. pavonica
possess both nymphicidal and ovicidal activity. It can be utilized for
the management of sucking pests of cotton and other crops.
 
Date 2011-03-29T07:19:30Z
2011-03-29T07:19:30Z
2011-02
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/11381
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.40(1) [February 2011]