Efficacy of various grain protectants against pulse beetle, Callosobruchus chinensis (L.) infesting chickpea, Cicer arietinum (L.) seeds
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Date
2004
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CCSHAU
Abstract
The chickpea, Cicer arietinum (L.) is having vital role in the diet of people and stands
first in area and production in the country and plays an important role in the agricultural economy of
India. Use of quality seed is the basic input in crop production. After harvest, the seeds have to be
stored for different periods before these are actually used for sowing in the next season. Under normal
storage conditions, chickpea is damaged by a bruchid viz. Callosobruchus chinensis (L.) upto a great
extent.
Synthetic organic chemicals are used to protect stored pulses and found effective in
controlling the pest but having toxic effect to grain and human beings. This has led to diversity the
control measures that should be non-toxic and effective approach against the pulse beetle,
Callosobruchus chinensis (L.).
The present investigations were carried out to study the efficacy of grain protectants
i.e. neem seed kernel powder @ 20 g/kg, neem oil @ 10 ml/kg, Mustard oil @ 7.5ml/kg, groundnut oil @
7.5 ml/kg, turmeric powder @ 3.5 g/kg mustard oil + turmeric powder @ 3.75 ml + 1.75g/kg, groundnut
oil + turmeric powder @ 3.75ml+1.75g/kg, saw dust (7cm covering) sand (7cm covering), dung cake ash
(7cm covering) and wheat husk (7cm covering) against C. chinensis and their effect on germination of
chickpea seeds (var. HC-3).
There were a total of 12 treatments and each treatment was replicated thrice including
untreated seeds as control and kept in plastic as well as glass jars under ambient storage conditions. All
the oils and dung cake ash gave significantly higher adult pulse beetle mortality as compared to
untreated control. On the basis of number of eggs laid, adult emergence and seed damage saw dust,
sand and dung cake ash (7cm covering each) were considered as most effective against C. chinensis.
None of the grain protectant treatments had an adverse effect on germination and vigour index except
oils and mixture of oils with turmeric powder which slightly hampered the standard germination of
chickpea seeds.
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