Role of soil physicochemical and microbiological properties in the occurrence and severity of chickpea's Fusarium wilt disease
Abstract
The aim of the present study is to evaluate the
relative disease severity of chickpea wilt in the most important chickpea
growing areas in North Algeria and their relationship to soils properties. The
physicochemical and biological parameters of 14 soils were analyzed and
correlated to the disease index severity (Dis). Soil physicochemical
factors were determined as a means of particle size distribution, pH,
Electrical Conductivity (EC), CaCO3 content, total Nitrogen
(Total-N), Olsen-P and biological factors including Foc inoculum density
(ID-Foc), Trichoderma spp propagule number (TrPn), Pseudomonas
spp and Bacillus spp. The results revealed that the spread of the
disease was evident in all prospected areas and recorded as low to medium with
values ranging from 2.05 to3 9.8. The disease severity was positively
correlated with EC (r=0.62), Total-N (r= 0.79), and ID-Foc
(r=0.72), whereas negatively correlated with Olsen-P (r=-0.67),
TrPn (r=-0.70) and Pseudomonas spp (r=-0.89). There
was no correlation between Dis and soil physical (clay, loam and sand),
chemical (pH, CaCO3 content) and biological factors (Bacillus spp).
As well, ID-Foc was positively correlated with Total-N and negatively
correlated with Olsen-P. The results indicated that TrPn and Pseudomonas
spp were positively correlated, whereas both were negatively associated
with ID-Foc and Dis. Our finding pointed out the critical role of some
physicochemical and biological soil characteristics in the epidemic development
of chickpea wilt under field conditions.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Authors
Dahou Moutassem
*
This is me
Algeria
Lakhdar Belabid
This is me
Algeria
Yuva Bellik
This is me
Algeria
Noureddine Rouag
This is me
Algeria
Hanane Abed
This is me
Algeria
Siham Ziouche
This is me
Algeria
Faiza Baali
This is me
Algeria
Publication Date
October 1, 2019
Submission Date
September 10, 2018
Acceptance Date
July 24, 2019
Published in Issue
Year 2019 Volume: 8 Number: 4
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