Role of soil physicochemical and microbiological properties in the occurrence and severity of chickpea`s Fusarium wilt disease

Authors : Dahou MOUTASSEM, Lakhdar BELABİD, Yuva BELLİK, Noureddine ROUAG, Hanane ABED, Siham ZİOUCHE, Faiza BAALİ

Pages : 304-312

Doi:10.18393/ejss.585160

View : 40 | Download : 10

Publication Date : 2019-10-01

Article Type : Research Paper

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 insert ignore into journalissuearticles values( Dis );. Soil physicochemical factors were determined as a means of particle size distribution, pH, Electrical Conductivity insert ignore into journalissuearticles values(EC);, CaCO 3 content, total Nitrogen insert ignore into journalissuearticles values(Total-N);, Olsen-P and biological factors including Foc inoculum density insert ignore into journalissuearticles values(ID-Foc);, Trichoderma spp propagule number insert ignore into journalissuearticles values( 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 insert ignore into journalissuearticles values( r =0.62);, Total-N insert ignore into journalissuearticles values( r = 0.79);, and ID - Foc insert ignore into journalissuearticles values( r =0.72);, whereas negatively correlated with Olsen-P insert ignore into journalissuearticles values( r =-0.67);, TrPn insert ignore into journalissuearticles values( r =-0.70); and Pseudomonas spp insert ignore into journalissuearticles values( r =-0.89);. There was no correlation between Dis and soil physical insert ignore into journalissuearticles values(clay, loam and sand);, chemical insert ignore into journalissuearticles values(pH, CaCO 3 content); and biological factors insert ignore into journalissuearticles values( 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 D is . 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 : Chickpea, Fusarium oxysporum f sp ciceris, Nitrogen, Olsen P, Trichoderma spp, Pseudomonas spp

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