Effect of Nutrition Solution pH and Electrical Conductivity on Fusarium Wilt on Strawberry Plants in Hydroponic Culture

Fusarium wilt on strawberry plants caused by Fusarium oxysporum f. sp. fragariae (Fof) is a major disease in Korea. The prevalence of this disease is increasing, especially in hydroponic cultivation in strawberry field. This study assessed the effect of nutrition solution pH and electrical conductivity (EC) on Fusarium wilt in vitro and in field trials. pH levels of 5.0, 5.5, 6.0, 6.5, 7.0, and 7.5 were assayed in vitro and in field trials. EC levels at 0, 0.5, 0.8, 1.0, and 1.5 dS∙m were assayed in field trials. Mycelial growth of Fof increased with increasing pH and was highest at 25C pH 7 and lowest at 20C, pH 5.0 in vitro. The incidence of Fusarium wilt was lowest in the pH 6.5 treatment and highest in the pH 5 treatment in field trials. At higher pH levels, the EC decreased in the drain solution and the potassium content of strawberry leaves increased. In the EC assay, the severity of Fusarium wilt and nitrogen content of leaves increased as the EC increased. These results indicate that Fusarium wilt is related to pH and EC in hydroponic culture of strawberry plants.

[1]  G. Munkvold,et al.  Effects of Temperature and pH on Fusarium oxysporum and Soybean Seedling Disease. , 2019, Plant disease.

[2]  H. S. Kim,et al.  Damage and potential of fungus gnat as a Fusarium vector in the strawberry plants in Korea , 2017 .

[3]  D. Shaw,et al.  Options for Management of Fusarium Wilt of Strawberry in California , 2016 .

[4]  Yuming Sun,et al.  Nitrate Protects Cucumber Plants Against Fusarium oxysporum by Regulating Citrate Exudation. , 2016, Plant & cell physiology.

[5]  W. Elmer.  Management of Fusarium crown and root rot of asparagus , 2015 .

[6]  M. Gullino,et al.  Fusarium wilts of ornamental crops and their management , 2015 .

[7]  S. Koike,et al.  Management of Fusarium wilt of strawberry , 2015 .

[8]  L. D. du Toit,et al.  A Soil Bioassay for Predicting the Risk of Spinach Fusarium wilt. , 2015, Plant disease.

[9]  J. Choi,et al.  Influence of fertilizer type on physiological responses during vegetative growth in 'Seolhyang' strawberry. , 2015 .

[10]  M. Barbetti,et al.  Reduced severity and impact of Fusarium wilt on strawberry by manipulation of soil pH, soil organic amendments and crop rotation , 2012, European Journal of Plant Pathology.

[11]  Antonio Delgado,et al.  Effect of ammonium/nitrate ratio in nutrient solution on control of Fusarium wilt of tomato by Trichoderma asperellum T34 , 2012 .

[12]  Hua Li,et al.  Comparisons of virulence of pathogens associated with crown and root diseases of strawberry in Western Australia with special reference to the effect of temperature , 2011 .

[13]  김홍기,et al.  Infection of Daughter Plants by Fusarium oxysporum f. sp. fragariae through Runner Propagation of Strawberry , 2011 .

[14]  Shi Liu,et al.  Effect of Nutrient Solution Strength on pH of Drainage Solution and Root Activity of Strawberry 'Sulhyang' in Hydroponics , 2011 .

[15]  Hong-gi Kim,et al.  Resistance Analysis of Cultivars and Occurrence Survey of Fusarium Wilt on Strawberry , 2005 .

[16]  M. Avilés,et al.  Predictive factors for the suppression of fusarium wilt of tomato in plant growth media. , 2004, Phytopathology.

[17]  W. Bettiol,et al.  Effect of sewage sludge on the rot and seedling damping-off of bean plants caused by Sclerotium rolfsii , 2003 .

[18]  B. Duffy,et al.  Macro- and Microelement Fertilizers Influence the Severity of Fusarium Crown and Root Rot of Tomato in a Soilless Production System , 1999 .

[19]  M. Hyakumachi,et al.  Carbon Loss and Germinability, Viability, and Virulence of Chlamydospores of Fusarium solani f. sp. phaseoli After Exposure to Soil at Different pH Levels, Temperatures, and Matric Potentials. , 1998, Phytopathology.

[20]  G. Gilardi,et al.  Effect of silicates and electrical conductivity on Fusarium wilt of hydroponically grown lettuce. , 2013, Communications in agricultural and applied biological sciences.

[21]  C. Islas.  Fusarium Wilt Caused by Fusarium oxysporum f. sp. fragariae: An Emerging Disease of Strawberry in California , 2012 .

[22]  P. Nelson,et al.  Greenhouse operation and management. , 1991 .

[23]  J. Correll.  Nitrate nonutilizing mutants of Fusarium oxysporum and their use in vegetative compatibility tests , 1987 .

[24]  R. Schneider.  Suppression of Fusarium yellows of celery with potassium, chloride, and nitrate , 1985 .

[25]  Seung‐Chul Kim,et al.  Studies on Varietal Resistance and Chemical Control to the Wilt of Strawberry caused by Fusarium oxysporum , 1982 .

[26]  D. Hopkins,et al.  Effect of soil pH and nitrogen source on Fusarium wilt of watermelon on land previously cropped in watermelons. , 1976 .

[27]  R. G. Menzel,et al.  Methods of soil and plant analysis with special reference to strontium 90 contamination. , 1965 .