engleski

Secondary macronutrients: advances in understanding calcium cycling in soils, uptake/use by plants and ways of optimizing calcium-use efficiency in crop production

Importance of calcium as a secondary macronutrient can be described in different ways because of its special role in soils and its function in plant nutrition. Majority of chemical and some of physical soil properties are heavily influenced by calcium content in soil profile. The available content of soil calcium is usually adequate for normal plant development, but large amounts of calcium are applied to soils with mineral fertilizers (as part of ballast) or as various liming materials that are used in manipulation of soil pH. Large amounts of calcium are applied as gypsum for reclamation of sodic soils and for improvement of physical properties of heavy soils. In this chapter we discuss the role of calcium in soils, in plants and as a complex constituent of liming materials used in soil amelioration.

Calcium ; Soil physical properties ; Soil pH ; Parent material weathering ; Calcium inputs ; Calcium outputs ; Calcifuge ; Calcicole ; Structural and functional calcium ; Ca oxalate ; Liming ; Liming materials ; Stagnosols

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