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323614

Predicting the Severity of Alfalfa Root rot Disease Under Salinity Conditions

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Last updated: 01 Jan 2025

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Abstract

Alfalfa roots are infected with several fungal pathogens under salinity conditions. The effect of two salts of NaCl and CaCO3 at three concentrations was studied in vitro. Mycelial growth and disease severity (DS%) were estimated to determine the relationship between (DS%) and water salinity. The highest effect on mycelial growth was detected at the electrical conductivity (ECW value) of 18.75 ds/m2 which ranged from 8.80 and 9.44% with NaCl and CaCO3, respectively. Furthermore, Exserohilum sp. was the most affected by water salinity. With the different levels of water salinity, the DS% of alfalfa root rot increased gradually with the increased water salinity level. The highest level of water salinity with NaCl and CaCO3 ECW value at 18.75 ds/m2 ranged (42.76 and 43.53% severity for NaCl) and (44.04 and 44.42% severity for CaCO3, respectively). Moreover, with water salinity NaCl and CaCO3, Fusarium sp. was the highest (DS%) with NaCl. Alfalfa root rot prediction model based on information gathered from the interaction of pathogen, water salinity, disease severity, and root and shoot length. It was found the relation between DS% with fungi, salt type, salt concentration, root and shoot length in the multiple regression model (r2 =88.83%).

DOI

10.21608/ajas.2023.223841.1280

Keywords

alfalfa, root rots, water salinity, Prediction Models

Authors

First Name

Khaled

Last Name

Arafat

MiddleName

Hussein

Affiliation

Plant Pathology Department, Faculty of Agriculture, New Valley University. Egypt.

Email

drkhaledarafat@agr.nvu.edu.eg

City

New Valley

Orcid

0000-0002-9895-4982

First Name

Mohammed

Last Name

Hassan

MiddleName

H.A.

Affiliation

Plant Pathology Department, Faculty of Agriculture, Assiut University, Egypt.

Email

mhasan@aun.edu.eg

City

Assiut

Orcid

0000-0001-7806-4790

First Name

Omar

Last Name

Mahmoud

MiddleName

H.H.

Affiliation

Plant Pathology Department, Faculty of Agriculture, New Valley University. Egypt.

Email

omarhassan@agr.nvu.edu.eg

City

El Khârga

Orcid

0000-0003-1836-7460

Volume

54

Article Issue

4

Related Issue

43709

Issue Date

2023-10-01

Receive Date

2023-08-29

Publish Date

2023-10-05

Page Start

154

Page End

167

Print ISSN

1110-0486

Online ISSN

2356-9840

Link

https://ajas.journals.ekb.eg/article_323614.html

Detail API

https://ajas.journals.ekb.eg/service?article_code=323614

Order

323,614

Type

Original Article

Type Code

62

Publication Type

Journal

Publication Title

Assiut Journal of Agricultural Sciences

Publication Link

https://ajas.journals.ekb.eg/

MainTitle

Predicting the Severity of Alfalfa Root rot Disease Under Salinity Conditions

Details

Type

Article

Created At

23 Dec 2024