Shahed University Horticultural Plants Nutrition 2645-4084 4 (Issue 1, spring & summer) 2021 08 23 Survey correlation between some soil physicochemical properties on the severity of tomato Fusarium wilt and yield in the Ramian region, Golestan province, Iran Survey correlation between some soil physicochemical properties on the severity of tomato Fusarium wilt and yield in the Ramian region, Golestan province, Iran 1 16 3491 10.22070/hpn.2021.5816.1113 FA Nafiseh Tatari MSc. Student, Gorgan University of Agricultural Sciences and Natural Resources, Department of Plant Protection, Gorgan, Iran. Seyed Esmaeel Razavi Assistant Professor, Gorgan University of Agricultural Sciences and Natural Resources, Department of Plant Protection, Gorgan, Iran. Javad Sanei Instructor, Gorgan University of Agricultural Sciences and Natural Resources, Department of Plant Protection, Gorgan, Iran. Elahe Lotalinezhad PhD Student, Gorgan University of Agricultural Sciences and Natural Resources, Department of Plant Protection, Gorgan, Iran. Journal Article 2020 08 29 Introduction: Tomato is one of the widely grown vegetables worldwide. Fusarium oxysporum f. sp. lycopersici is the significant contributory pathogen of tomato vascular wilt, and is a limiting factor of tomato production in Ramian region, Golestan province, Iran. This experiment was conducted for evaluation of soil physicochemical properties impacts on tomato Fusarium wilt. Material and methods: Soil samples were randomly selected from the Ramian region tomato fields and the physical (pH, EC) and chemical (organic matter, N, P, K) properties were measured by titration, flame photometry and spectrophotometry methods. Disease assessment (soil inoculum, external and internal scales) also recorded in different fields. A correlation analysis was used for analyzing the association between disease assessments with soil physicochemical properties, a correlation analysis was used. Results and discussion: The results of the study showed a low positive, but significant correlation between pH and soil inoculum. In return, the correlations between EC, N, P, K and organic matter and soil inoculums were not statistically significant. There was a significant correlation between EC, K and soil inoculums with external scale, also a positive and negative correlation observed between internal scale with soil inoculums and with K and P levels, respectively. The correlation between soil inoculum with yield of first, second and total harvests were not statistically significant, but a negative significant correlation observed between soil inoculum with yield of third harvest. The correlation of internal scale and yield of first harvest was also negative and significant. Conclusions: The results showed the low significant correlation of potassium and phosphorus on Fusarium wilt intensity in the Ramian region tomato fields. Introduction: Tomato is one of the widely grown vegetables worldwide. Fusarium oxysporum f. sp. lycopersici is the significant contributory pathogen of tomato vascular wilt, and is a limiting factor of tomato production in Ramian region, Golestan province, Iran. This experiment was conducted for evaluation of soil physicochemical properties impacts on tomato Fusarium wilt. Material and methods: Soil samples were randomly selected from the Ramian region tomato fields and the physical (pH, EC) and chemical (organic matter, N, P, K) properties were measured by titration, flame photometry and spectrophotometry methods. Disease assessment (soil inoculum, external and internal scales) also recorded in different fields. A correlation analysis was used for analyzing the association between disease assessments with soil physicochemical properties, a correlation analysis was used. Results and discussion: The results of the study showed a low positive, but significant correlation between pH and soil inoculum. In return, the correlations between EC, N, P, K and organic matter and soil inoculums were not statistically significant. There was a significant correlation between EC, K and soil inoculums with external scale, also a positive and negative correlation observed between internal scale with soil inoculums and with K and P levels, respectively. The correlation between soil inoculum with yield of first, second and total harvests were not statistically significant, but a negative significant correlation observed between soil inoculum with yield of third harvest. The correlation of internal scale and yield of first harvest was also negative and significant. Conclusions: The results showed the low significant correlation of potassium and phosphorus on Fusarium wilt intensity in the Ramian region tomato fields.

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