Effect of lignite amendment on carbon and nitrogen mineralization from raw and composted manure during incubation with soil

Organic Nitrogen Forms in Soils Treated with Cattle Manure

“…From the point of view of soil fertility and plant nutrition, the use of organic fertilizers reflects on the supply of nutrients, such as nitrogen (N), phosphorus (P), and potassium (K), as well as on the improvement of other chemical attributes related to the decrease in acidity and the increase in the organic matter content and cation exchange capacity (CEC) of the soil [3,4].…”

“…Of the nutrients that are released during manure mineralization, there is particular interest in N, due to the high production cost of industrialized nitrogen fertilizers and the high demand for this nutrient by plants. However, the dynamics of N from cattle manure in the soil is a complex process influenced by a series of factors, and it is essential to understand the interactions between soil characteristics, manure properties and contact time to optimize the use of this resource in agriculture [4][5][6]. The transformations of N in the soil are directly influenced by the physical, chemical and microbiological characteristics of the soil, and by the characteristics of the manure itself, especially the proportion of organic and mineral forms of N and the carbon/nitrogen (C/N) ratio [4].…”

“…The total N in manure consists, for the most part, of stable organic Mecules, which, after addition to the soil, need to be decomposed by microorganisms to originate the forms of N absorbed by plants (N-NH 4 + and N-NO 3 − ). However, manure constituents decompose at varying rates due to the different forms of organic N found in the residue.…”