makroelemei

Makroelemei is a term used in geology and soil science to refer to chemical elements that are required by plants in relatively large quantities for their growth and development. These elements are essential nutrients, meaning that their absence or deficiency will prevent a plant from completing its life cycle. The most common macronutrients are carbon, hydrogen, oxygen, nitrogen, phosphorus, and potassium. These are often referred to as the "big six."

In addition to these primary macronutrients, sulfur, calcium, and magnesium are also considered macronutrients because they are also needed in significant amounts. Carbon, hydrogen, and oxygen are typically obtained by plants from the atmosphere and water. The other macronutrients are absorbed from the soil through the roots. Deficiencies in any of these elements can lead to stunted growth, discoloration, and reduced crop yields. Soil testing is often performed to determine the levels of these nutrients and guide the application of fertilizers to ensure adequate availability for plant uptake.