Research for developing synthetic indicators of biological, chemical and soil fertility potential
1998
Stefanic, Gh. | Oprea, Georgeta | Irimescu, Mirela-Emilia (Institutul de Cercetari pentru Cereale si Plante Tehnice-Fundulea (Romania))
Soil fertility is a very important problem, not only for agricultural practice, but for soil science too. The paper presents different approaches of the "soil fertility" notion and of defining the fundamental features of soil, taken over from the literature, as well as own definition, together with the estimate methodology, whereby the soil may be compared and differentiated, without resorting to the criterion of the agricultural productivity. Thus, the quality of agricultural soils and the effect of agricultural technology will be more correct, avoiding the error of confounding the level and the fertility evolution with the productivity level of soils, the last depending, mainly, on the efficiency of stimulation means of the yields. The authors present a model of processing the data from the biotical, enzymatical and chemical analyses of some soil variants in the long-term experiments and their grouping by a synthetic indicator of fertility.
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