STUDY ON EFFECT OF PSEUDOMONAS FLUORESCENS IN COMBINATION WITH METALAXYL AGAINST THE PYTHIUM ULTIMUM CAUSAL AGENT OF SEED ROT AND PRE-EMERGENCE OF CHICKPEA

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AHMADIZADEH M.; SHARIFI TEHRANI A.

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Journal: AGRICULTURAL RESEARCH Year:2008 | Volume:8 | Issue:1 (A) Page(s): 133-145

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Title

STUDY ON EFFECT OF PSEUDOMONAS FLUORESCENS IN COMBINATION WITH METALAXYL AGAINST THE PYTHIUM ULTIMUM CAUSAL AGENT OF SEED ROT AND PRE-EMERGENCE OF CHICKPEA

Author(s)

AHMADIZADEH M. | SHARIFI TEHRANI A. | Issue Writer Certificate

Keywords

CHICKPEAQ3

SEED ROTQ3

RHIZOBACTERIAQ3

SEED BACTERIZATIONQ3

BIOCONTROLQ3

Abstract

CHICKPEA SEED ROT and seedling pre-emergence damping-off caused by Pythium ultimum is one of the most devastating diseases in Iran. Consequently, growers can expect as much as>80% reduction in stand and yield if measures are not taken to control the disease. The fungus used in this work was isolated from CHICKPEA seeds, and identified as P. ultimum var. ultimum. It caused a 57.7 percent reduction of seed emergence in greenhouse trials. In the current study, the BIOCONTROL potential of four antagonistic bacteria against the P. ultimum was evaluated. Pseudomonas fluorescens Qz29R, a well-known BIOCONTROL agent obtained from the Washington State University, was comparatively used as a control. The performance of these bacteria was greatly influenced by different types of inoculation and their application methods. 95% if seeds coated with the BIOCONTROL bacterium P. fluorescens isolate Pf-2 could considerably germinate in the prescenc of the P. ultimumin the plate assay. It appears to be a compatibility of bacterial treatments with metalaxyl, so that it may be applied in combination with the fungicide. Metalaxyl had no inhibitory effect on bacterial growth at different concentration used in this study. Captan inhibited the bacterial growth at the concentration of 10-3. In sterilized soil, metalaxyl was the most effective treatment, regarding theseedling stand and increased fresh weight of CHICKPEAs. Isolate Pf-3 was considerably more effective than Pf-2, resulting in greater (P<0.05) seedling stand.

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APA: Copy

AHMADIZADEH, M., & SHARIFI TEHRANI, A.. (2008). STUDY ON EFFECT OF PSEUDOMONAS FLUORESCENS IN COMBINATION WITH METALAXYL AGAINST THE PYTHIUM ULTIMUM CAUSAL AGENT OF SEED ROT AND PRE-EMERGENCE OF CHICKPEA. AGRICULTURAL RESEARCH, 8(1 (A)), 133-145. SID. https://sid.ir/paper/84755/en

Vancouver: Copy

AHMADIZADEH M., SHARIFI TEHRANI A.. STUDY ON EFFECT OF PSEUDOMONAS FLUORESCENS IN COMBINATION WITH METALAXYL AGAINST THE PYTHIUM ULTIMUM CAUSAL AGENT OF SEED ROT AND PRE-EMERGENCE OF CHICKPEA. AGRICULTURAL RESEARCH[Internet]. 2008;8(1 (A)):133-145. Available from: https://sid.ir/paper/84755/en

IEEE: Copy

M. AHMADIZADEH, and A. SHARIFI TEHRANI, “STUDY ON EFFECT OF PSEUDOMONAS FLUORESCENS IN COMBINATION WITH METALAXYL AGAINST THE PYTHIUM ULTIMUM CAUSAL AGENT OF SEED ROT AND PRE-EMERGENCE OF CHICKPEA,” AGRICULTURAL RESEARCH, vol. 8, no. 1 (A), pp. 133–145, 2008, [Online]. Available: https://sid.ir/paper/84755/en

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