Effect of different inoculum levels of Meloidogyne incognita, Alternaria dauci and Rhizoctonia solani on the growth, chlorophyll and carotenoid content and disease progression of carrot (Daucus carota L.)

L. Ahmad; Z. A. Siddiqui

doi:10.1556/038.54.2019.025

Acta Phytopathologica et Entomologica Hungarica

Volume/Issue:: Volume 54: Issue 2

Effect of different inoculum levels of Meloidogyne incognita, Alternaria dauci and Rhizoctonia solani on the growth, chlorophyll and carotenoid content and disease progression of carrot (Daucus carota L.)

Authors:

L. Ahmad

L. Ahmad Department of Botany, Aligarh Muslim University, Aligarh-202002 (U.P.), India

Search for other papers by L. Ahmad in
Current site
Google Scholar
PubMed

and

Z. A. Siddiqui

Z. A. Siddiqui Department of Botany, Aligarh Muslim University, Aligarh-202002 (U.P.), India

Search for other papers by Z. A. Siddiqui in
Current site
Google Scholar
PubMed

View More View Less

Pages:: 211–220

Online Publication Date:: Dec 2019

Publication Date:: 01 Dec 2019

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/038.54.2019.025

Keywords:: Crown rot; disease indices; galls; leaf blight; root-knot

Restricted access

The economic threshold level of Meloidogyne incognita, Alternaria dauci and Rhizoctonia solani were determined on carrot (Daucus carota L.) under greenhouse conditions. The results revealed that plant length, plant fresh weight, shoot and root dry weight, chlorophyll and carotenoid decreased progressively with the corresponding increase in the inoculum levels of each pathogen. The significant reduction in plant growth parameters, chlorophyll and carotenoid occurred when 2000 or more second stage juveniles (J2s) of M. incognita, 1.0 g or more inoculum of A. dauci or R. solani per kg soil were inoculated. Maximum reduction in plant growth attributes, chlorophyll and carotenoid occurred at the highest inoculum level of the test pathogens. Increase in the inoculum level of M. incognita caused an increase in the number of root galls, while the multiplication of nematode was found inversely related to the inoculum density. The increase in the inoculum levels of A. dauci and R. solani resulted in a progressive increase in leaf blight and crown rot indices and caused a higher reduction in plant growth parameters. The damaging threshold level of M. incognita was 2000 J₂ per kg soil while 1.0 g per kg soil of A. dauci or R. solani was threshold level on carrot. The assessment of infestation levels of test pathogens will enable growers to cost-effectively select and implement the management tactics.

Save
Cite
Email this content

Share Link

Copy this link, or click below to email it to a friend
Email this content
or copy the link directly:

https://akjournals.com/abstract/journals/038/54/2/article-p211.xml
The link was not copied. Your current browser may not support copying via this button.

Link copied successfully

Collapse
Expand

Acta Phytopathologica et Entomologica Hungarica

Print ISSN:: 0238-1249

Online ISSN:: 1588-2691

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

Acta Phytopathologica et Entomologica Hungarica
P.O. Box 102
H-1525 Budapest, Hungary
Phone: (36 1) 487 7534
Fax: (36 1) 487 7555
E-mail: acta@atk.hu

Indexing and Abstracting Services:

Biological Abstracts
BIOSIS Previews
CAB Abstracts
CABELLS Journalytics
Chemical Abstracts
Elsevier GEO Abstracts
Globals Health
Referativnyi Zhurnal
SCOPUS
Zoological Abstracts

2023
Scopus
CiteScore	1.1
CiteScore rank	Q4 (Insect Science)
SNIP	0.279
Scimago
SJR index	0.22
SJR Q rank	Q4

Acta Phytopathologica et Entomologica Hungarica
Publication Model	Hybrid
Submission Fee	none
Article Processing Charge	Effective from 1st Feb 2025: 200 EUR/article
Printed Color Illustrations	40 EUR (or 10 000 HUF) + VAT / piece
Regional discounts on country of the funding agency	World Bank Lower-middle-income economies: 50% World Bank Low-income economies: 100%
Further Discounts	Editorial Board / Advisory Board members: 50% Corresponding authors, affiliated to an EISZ member institution subscribing to the journal package of Akadémiai Kiadó: 100%
Subscription fee 2025	Online subsscription: 536 EUR / 590 USD Print + online subscription: 626 EUR / 688 USD
Subscription Information	Online subscribers are entitled access to all back issues published by Akadémiai Kiadó for each title for the duration of the subscription, as well as Online First content for the subscribed content.
Purchase per Title	Individual articles are sold on the displayed price.

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
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0238-1249 (Print)
ISSN	1588-2691 (Online)