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Antifeedant and insecticidal properties of essential oils of turmeric (Curcuma longa L.) and garlic (Allium sativum L.) against diamondback moth plutella xylostella (Linnaeus)

KrishiKosh

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Title Antifeedant and insecticidal properties of essential oils of turmeric (Curcuma longa L.) and garlic (Allium sativum L.) against diamondback moth plutella xylostella (Linnaeus)
 
Creator Govindaraddi
 
Contributor Sharma, S.S.
 
Subject Curcuma longa, Allium sativum, Antifeedant Plutella xylostella
 
Description Studies on the antifeedant and insecticidal activities of
turmeric and garlic essential oils against different stages of
Plutella xylostella were carried out under laboratory conditions in
the Department of Entomology, CCS, H.A.U., Hisar, India. The
treatments included were 0.2, 0.4, 0.6, 0.8 and 1.0 per cent
concentrations of both the oils. All the concentrations of both the
oils were better than control in giving larval mortality. However,
garlic oil at 1.0 per cent afforded cent per cent larval mortality
when exposed topically. Consumption index, growth rate,
efficiency of conversion of digested food as well as ingested food
and approximate digestibility were also adversely affected in all
the treatments. The adults preferred to lay greater number of
eggs on the untreated portion of the oviposition substrate as
compared to the treated portion, under choice condition. The
essential oils also manifested repellent activity by reducing the
number of eggs laid by the ovipositing females. Adults fed on an
essential oil containing sucrose diet showed comparatively
higher mortality, lower longevity and laid significantly fewer eggs
with poor hatching. Marked adverse effects on hatching were
also noticed when the eggs were dipped in different
concentrations of essential oils. Under biological studies on first
and third instar larvae of P. xylostella, 0.8 and 1.0 per
cent garlic essential oil and 1.0 per cent turmeric essential oil
significantly affected larval survival, larval period, pupal period,
pupation, adult emergence, longevity and oviposition. Overall
garlic essential proved better than turmeric essential oil in
affecting the biological parameters of this insect.
 
Date 2016-11-30T10:05:16Z
2016-11-30T10:05:16Z
2005
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/88307
 
Language en
 
Format application/pdf
 
Publisher CCSHAU