Relations between Soil Physicochemical Properties and Ginger Growth
2013
Kim, D.J., Chonbuk National University, Jeonju, Republic of Korea | Ahn, B.K., Jeonbuk Agricultural Research and Extension Services, Iksan, Republic of korea | Lee, J.H., Chonbuk National University, Jeonju, Republic of Korea
Root-rot disease is a serious problem in ginger cultivation fields and it reduces the quality and productivity of ginger. This study was conducted to investigate the effects of different soil physical and chemical properties on the changes of ginger growth. As comparing the selected soil chemical properties after harvesting the ginger plants with those before planting them, the contents of total nitrogen and exchangeable Mg2+ increased, whereas electrical conductivity (EC) and exchangeable K+ content decreased. Potassium (K) concentrations in ginger plant were markedly higher in both its shoot and root parts ranging from 63.9 to 72.3g kg-1 and from 27.6 to 37.3g kg-1, respectively, which might be related to the decrease of exchangeable K+ content in soils. Incidence rate of ginger root-rot disease in the plots ranges between 26.7% and 88.1%. It was higher in low elevation plots with clay loam soils than in high elevation plots. In addition, the incidence of the disease increased as affected by high temperature and humid condition during the growth and maturity stages of ginger. Therefore, soil texture, field slop, and drainage system as well as chemical properties should be considered to cultivate ginger plant.
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