A Review on Estimation of soil Macronutrients using Satellite Image Processing

Abstract

Major portion of Indian economy depends on agriculture. More than 40 % of the Indian land is used for agriculture which contributes to Gross Domestic Product (GDP) of the country and also provides employ to the population of the country. Increment in the population day by day increases the requirement for the increment in the yield of the agricultural products. There are several factors which is responsible to control the agricultural product yield. Among them Nitrogen, Phosphorus and Potassium are the macronutrients are the vital elements of the soil . Due to the instability in the climatic condition of India and also due to other biotic and abiotic factors macronutrients get varies. To increase the crop yield, the perfect handling of macronutrients i.e., nitrogen, phosphorus and potassium are required. As the technology is developing day by day, the application of remote sensing in agriculture is becoming promising. The satellite images of agricultural land can be processed and analysed to provide vital information for efficient agricultural practices. This paper is the review of the present state of art in the field of satellite image processing techniques for the estimation of the macronutrients of the agricultural land. This review will promote the acceptance of hyperspectral image technology for the investigation of soil NPK.