Experience of grain crops productivity modelling for the nonchernozem zone of Russia on the basis of the geographical network of experiences with fertilizers data

Crop productivity models for winter wheat and spring barley, considering interaction of climatic factors, soil conditions and different rates of mineral fertilizers for the Nizhniy Novgorod, Vladimir, Moscow areas are created. Coincidence of the modeling results on the basis of the different data sources allows using the data of the Geographical network of experiences with fertilizers for calculation of a uniform grid of crop productivity estimates.