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 the parasitoid Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae) on mealybug, Phenacoccus solenopsis Tinsley in cotton based cropping systems and associated weed flora.

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Title  the parasitoid Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae) on mealybug, Phenacoccus solenopsis Tinsley in cotton based cropping systems and associated weed flora.
 the parasitoid Aenasius bambawalei Hayat (Hymenoptera: Encyrtidae) on mealybug, Phenacoccus solenopsis Tinsley in cotton based cropping systems and associated weed flora.
 
Creator ICAR_CRIDA
 
Subject Phenacoccus solenopsis, Aenasius bambawalei, Gossypium hirsutum, cotton, mealybug, parasitoid, alternate hosts, weed flora, cropping systems, diversity
 
Description Not Available
The mealybug, Phenacoccus solenopsis Tinsley, a polyphagous pest with a wide host range is of recent occurrence
on Bt cotton in all the three major cotton growing zones in India. The first perceptible appearance of the pest on cotton in Warangal
district of Andhra Pradesh was noticed in Kharif 2008. P. solenopsis was recorded on several plants other than cotton which include
cultivated crops and weed hosts. The mealybug population is naturally regulated by Aenasius bambawalei Hayat (Hymenoptera:
Encyrtidae). This paper reports the dynamics of this key parasitoid in a spatio-temporal perspective. Monitoring of the parasitoid
on P. solenopsis occurring on weed hosts found on field bunds, crop fallows, barren lands, roadsides and village backyards indicated
its activity on eight weed hosts late in the cotton growing season of 2009. During the year 2010, its activity started early in the season
on few weed hosts while many more supported parasitization late in the season. Parasitoid activity was higher (11.3 to 15.3%)
initially on the key hosts (Corchorus olitorius L., Abutilon indicum L., and Sida acuta Burm. F.) early in the season (August) which
later shifted gradually to the main host (cotton) during the later part of the season. Cropping system and spatial perspective indicated
that cotton fields adjacent to roadside and crop fallows supported higher parasitization during September (8.3 – 9.1%) and cotton
fields adjacent to barren lands in December (13.3%). These findings have implications for the management of P. solenopsis mealybug
on cotton from an agro eco-system perspective.
Not Available
 
Date 2020-02-25T05:29:05Z
2020-02-25T05:29:05Z
2011
 
Type Technical Report
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/32449
 
Language English
 
Relation Not Available;
 
Publisher Prasad YG, Prabhakar M,