Authors:
M. W. Abbasi Department of Botany, University of Karachi, Karachi-75270, Pakistan

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M. Q. Khan Department of Botany, University of Karachi, Karachi-75270, Pakistan

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M. J. Zaki Department of Botany, University of Karachi, Karachi-75270, Pakistan

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S. S. Shaukat Department of Botany, University of Karachi, Karachi-75270, Pakistan

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A. Rauf Department of Botany, University of Karachi, Karachi-75270, Pakistan

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N. Ahmed Department of Botany, University of Karachi, Karachi-75270, Pakistan

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M. Azeem Department of Botany, University of Karachi, Karachi-75270, Pakistan

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M. Tariq MAHQ Biological Research Centre, University of Karachi, Karachi-75270, Pakistan

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Bacillus thuringiensis (B.t) is well known for its biocontrol potential against a variety of insects. Nematicidal potential of ten B.t isolates was tested against root-knot nematodes (Meloidogyne javanica (Treub) Chitwood) in vitro, under greenhouse as well as in field conditions. Eggs and second stage juveniles (J2) were exposed to 5 and 25% concentrations of bacterial cell-free aqueous extracts up to 96 h. B.t isolates showed lesser degrees of nematicidal activity at 5% concentration. However, some B.t isolates (B.t-14, B.t-16 and B.t-64) greatly reduced egg hatching and increased J2. All B.t isolates revealed suppressed egg hatching and increased mortality of J2 at 25% concentration. Soil applications with most of the B.t isolates under greenhouse and field conditions significantly improved height and fresh weights of root-knot nematode parasitized okra (Abelmoschus esculentus (L.) Moench). Some isolates, including B.t-64 reduced the number of galls and egg masses. B.t-64 reduced gall formation up to 70% under greenhouse conditions. However, 29% of decrease was observed in field conditions. Similarly, B.t-64 treated plants showed a 56% decreased in eggs/egg mass in a field experiment. Population of root-knot nematodes in the rhizosphere was decreased up to 61% in the field experiment as compared to control.

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Editor-in-Chief

Jenő KONTSCHÁN Centre for Agricultural Research, Hungary

Technical Editor

Ágnes TURÓCI Centre for Agricultural Research, Hungary

Section Editor

K SALÁNKI Centre for Agricultural Research, Hungary
 

Editorial Board

Z BOZSÓ Centre for Agricultural Research, Hungary
PE CHETVERIKOV Saint-Petersburg State University, Russia
JX CUI Henan Institute of Science and Technology, China
J FODOR Centre for Agricultural Research, Hungary
Z IMREI Centre for Agricultural Research, Hungary
BM KAYDAN Çukurova University, Turkey
L KISS University of Southern Queensland, Australia
V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary
MW NEGM Ibaraki University, Japan
L PALKOVICS Széchenyi István University, Hungary
M POGÁNY Centre for Agricultural Research, Hungary
D RÉDEI National Chung Hsing University, Taiwan
A TOLSTIKOV University of Tyumen, Russia
J VUTS Rothamsted Research, UK
GQ WANG Guangxi University, China

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2023  
Scopus  
CiteScore 1.1
CiteScore rank Q4 (Insect Science)
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Acta Phytopathologica et Entomologica Hungarica
Language English
Size B5
Year of
Foundation
1966
Volumes
per Year
1
Issues
per Year
2
Founder Magyar Tudományos Akadémia  
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
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H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
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ISSN 0238-1249 (Print)
ISSN 1588-2691 (Online)

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