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Evaluation of the control
of citrus nematode (Tylenchulus semipenetrans)
by leaf extracts of many plants and their effects on plant
growth
Kavous Ayazpour1*,
Hamed Hasanzadeh2 and Mohammad Sadegh Arabzadegan2
1Department
of Plant
Pathology, Islamic Azad University of Jahrom,
Jahrom, Iran.
2Department
of Horticulture, Islamic Azad University of Jahrom, Jahrom, Iran.
*Corresponding author. E-mail:
Kayazpour@yahoo.com. Tel: 0098-791-4447001, 4447002. Fax: 0098- 791- 3331019.
Accepted
26 June, 2010 |
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The
citrus nematode is an important nematode that is distributed
in citrus gardens worldwide and causes decline and growth
reduction of citrus plants. A control way of this nematode
is chemical control that it is dangerous to environment. In
this research, leaf extract of Allium sativum,
Brassica
campestris,
Capsicum frutescents,
Glycyrrhiza glabra,
Datura
innoxia, Chenopodium botrys
and Foeniculum vulgare was used to evaluate them on
plant growth and citrus nematode control in Fars province,
Iran. In laboratory conditions different plant extracts,
concentration of each extract and duration time of exposure
extracts was examined in Petri dishes. Results showed that
increase in concentration and duration time of exposure
extracts caused increased percentage of nematode mortality.
In laboratory experiments extracts of A. sativum and
C. frutescents, D. innoxia, F. vulgare were more
effective respectively. In pod experiments, nematode
populations decreased in seedlings that were treated with
A. sativum, C. frutescents and F. vulgare
compared with control sample. In these, pods increased plant
growth. These results confirm that it is possible to use
local plant extracts to control citrus nematode instead of
using chemical nematicides.
Key
words:
Citrus nematode, plants extract, citrus nematode control,
Tylenchulus semipenetrans, Fars province, Iran.
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