Abstract
Information on soil nutrition level or soil pollution level can lead to the establishment of some recommendations or a strategic decision-making program for the reference area development. The specific soil analysis is essential both from an economic point of view and from an environmental point of view. To achieve an adequate management of the nutrients into an agricultural field, it is necessary to conduct an agrochemical study at an interval of 3–5 years, in which, the relevant agrochemical indicators for the evaluation of the nutrient supply state must be analysed, to determine fertilizer doses and/or recommended amendments for the expected crops. The agrochemical study must contain the analysis bulletin that provides the following information: pH value, humus and total nitrogen content, phosphorus (P) and potassium (K) content, C/N ratio (carbon / nitrogen), nitrogen index (NI), as well as the main microelements.
Highlights
Soil, the natural environment for plant growth and ecosystem survival, is a heterogeneous polydispersion system consisting of three states of aggregation of matter: solid, liquid and gaseous.Most of the nutrients contained in the soil in larger quantities are: Si, Al, Ca, Mg, K, Fe, Na, P and are fixed in the primary and secondary minerals from which the soil comes from
Because the activity of hydrogen ions determines the activity of other ions in the soil solution, the pH value is important in assessing soil fertility, [4]
Along with the analysis of pH, humus, degree of saturation in the bases, the analysis of macronutrients N, P, K is very important in establishing the degree of fertilization of a soil in making fertilizer recommendations with these nutrients and
Summary
The natural environment for plant growth and ecosystem survival, is a heterogeneous polydispersion system consisting of three states of aggregation of matter: solid, liquid and gaseous. Most of the nutrients contained in the soil in larger quantities are: Si, Al, Ca, Mg, K, Fe, Na, P and are fixed in the primary and secondary minerals from which the soil comes from. They cannot be absorbed directly by plants, but only after their passage into the liquid phase, as a result of the disaggregation and alteration processes. Knowing the relationships between plant, soil and environment must reach a balance
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