Agriculture, being a backbone to of India, provides livelihood to about seventy percent of the population and from an economic point of view, from an economic perspective, contributes forty percent towards Gross National Product. High crop yield is termed as “e Green Revolution” now days. It depends on the various factors like climatic conditions, soil type, management practices and other inputs like fertilizers. Fertilizers play the role of the main contributing factor in obtaining an enviable crop yield, but the usage of high quality and quantity of fertilizers to gain more crop yield causing considerable environmental complications. Digital processing of remotely sensed sensing data opened up new opportunities for understanding synoptic and substantial changes
in the cropping pattern. e present paper is the study of Rice Equivalent Yield (REY) and Sodium Absorption Ratio (SAR) with the e†ect of di†erent fertilizer amounts like Nitrogen (N), Phosphorous (P) and Potassium (K) in the rice-based cropping pattern, i.e., Rice-Wheat, Rice-Maize, Rice-Mustard, Rice-Lytherus in Katihar and Bhagalpur districts of Bihar, India. e spatial maps of rice-based cropping with the availability of N, P and K are illustrated to determine the REY in the study area. e di†erent soil micronutrients, i.e., Organic Carbon (OC), Electrical Conductivity (EC) and pH are also used to examine the spatial discrepancies of rice-based cropping systems productivity. Ultimately the relational pattern has been drawn an equivalent rice ”eld and nitrate between rice equivalent yield and nitrate.