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Seasonal occurrence of major defoliators of castor in Tamil Nadu

Indian Agricultural Research Journals

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Title Seasonal occurrence of major defoliators of castor in Tamil Nadu
 
Creator P A SARAVANAN
S GEETHA
M SENTHILKUMAR
V RAVICHANDRAN
P VEERAMANI
P ARUTCHENTHIL
S R VENKATACHALAM
S MANICKAM
P DURAIMURUGAN
 
Subject Castor, Defoliators, Seasonal occurrence
 
Description Castor is a non-edible oil bearing crop adapted to dry lands of tropics and semi-arid tropics. The seasonal occurrence of major defoliators viz., semilooper, Spodoptera and hairy caterpillars in castor was recorded continuously for last ten years (2012-2022) at Tapioca and Castor Research Station, Yethapur. The results revealed that Spodoptera litura was the major defoliator with a mean population of 4.3 larva/plant /year followed by semilooper and hairy caterpillar with 1.74 larva/plant/year and 1.44 larva/plant/year respectively. The maximum population of defoliators was recorded every year during 43rd to 49th standard weeks (October, November).
 
Publisher Indian Society of Oilseeds Research
 
Date 2023-12-14
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/JOR/article/view/146253
10.56739/0gdfe327
 
Source Journal of Oilseeds Research; Vol. 40 No. Specialissue (2023): Journal of Oilseeds Research
0970-2776
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/JOR/article/view/146253/53311
 
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