We basically in Nepal used the fertilizer in the cereals field without knowing the soil condition and demand of the crop, so that there is the high risk of soil degradation and less production, which is an emerging problem of Nepal. Nutrient Expert is a software tool which is based on SSNM, which nourishes the crop as demand and focusing on soil status. This publication is the summary of all the research conducted in Jhapa, Morang and Lamjung. This book might be helpful to young graduates who want to conduct research in nutrient management and agriculture authentic people for recommending the Fertilizer dose in different cereals my using this model. This book might be useful to all concerned agriculture students.