Microbiological activity and soil fertility
1995
Nannipieri, P. (Florence Univ. (Italy). Dipartimento della Scienza del Suolo e Nutrizione della Pianta) | Landi, L. (Universita della Tuscia, Viterbo (Italy)) | Badalucco, L. (Universita della Tuscia, Viterbo (Italy). Dipartimento di Agrobiologia ed Agrochimica)
It is discussed the ecological and agronomical significance of determinations of microbiological activity of soil, which is related to the metabolic activity and, therefore, to the status of soil fertility. The microbiological activity of soil includes the activities of metabolic processes carried out by microorganisms. The metabolic quotient is one of the most sensitive parameters of the microbiological activity of soil. The ATP content is related to the microbiological activity if the soils are immediately analyzed after their sampling. On the other hand further research is needed to ascertain the validity of the Adenylate Energy Charge as a sensitive parameter of the microbiological activity of soil. The use of N enriched compounds allows the discrimination of the behaviour of fertilizer N from that of native N and it permits to determinate the rates of the gross N mineralization and immobilization rates. With the present methods it is possible to determinate the potential enzyme activities of soil. However, it may be useful to combine enzyme determinations with the classical chemical analyses for a better characterization of soils
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