Modelo para estimar la capacidad de aporte de nitrógeno del suelo

long term aerobic incubations allow estimation of nitrogen mineralization potential of soils (n0), but is a time consuming technique. anaerobic incubation (n-ai) is a short time consumer alternative, which also allows predicting the nitrogen nutrient mineralization capacity. the objectives were: a) to establish the association degree and the relationship between n0 and n-ai obtained from some soils of entre ríos, argentina, and b) to check the generated model using a different group of data to establish the possibility to use the model as an estimator of the potential mineralization capacity. we found a positive correlation between n0 and n-ai (r = 0.86 **). the lineal model adjusted to estimate n0 from n mineralized in anaerobic incubations (nmp-ai) was 1.131 n-ai + 55.28 (r2= 0.74). the differences between n0 and nmp-ai were 10%. the difference represented 4 to 10 kg n ha-1 for n mineralized in field conditions. we concluded that n-ai allow showing differences among different soils and managements and can be used as a simple and rapid technique to estimate n0.