The relation between vegetation indices of the generative stage with productivity of paddy fields

Abstract

Maros regency is one of the agricultural areas in South Sulawesi which is a large rice area. Sourced from BPS data (Central Statistics Agency), both rice production and productivity in Maros Regency have decreased fluctuatingly over the last three years. Knowledge related to rice productivity is very important to know in order to support food security. Geographic information system is one of the modern technologies that can be used in estimating rice productivity which then utilizes Sentinel-2 Image data. In its use, a spectral transformation is used to display aspects of plant conditions such as vegetation index NDVI (Normalized Difference Vegettation Index), EVI (Enchanced Vegetation Index) and SAVI (Soil Adjusted Vegetation Index). The purpose of this study was to determine the relation between the vegetation index value of the generative stage and the productivity of paddy fields in Alatengae village. The method used is a simple linear regression method in estimating the relation between rice productivity and the vegetation index NDVI, EVI and SAVI. From the analysis of the relation between the vegetation index and rice productivity, there is a very strong (positive) correlation, where the higher the value of the vegetation index, it will be higher the plant productivity.