Comparison of NDVI, NDRE, MSAVI and NDSI Indices for Early Diagnosis of Crop Problems

Abstract In precision agriculture, it is possible to use satellite monitoring of fields. Satellite systems allow you get free images with a resolution up 10 m per pixel, which sufficient determine the state vegetation plants on such indicators as normalized index NDVI. However, NDVI indicator already indicates existing problems correction will not help restore lost yield crops, but only helps prevent further losses. Using NDSI soil salinity index, difference in its properties from spectral images. Also, can study early stages their development, fact immediately after germination. Soil-adjusted MSAVI, used for this purpose. Studies indicate possibility using and MSAVI diagnosis confirmed crops NDRE (indicating chlorophyll activity plants) at later development. conducted soybean, spring barley maize sown 2021 correspondence between raster field maps show-ing above indices made March July. Statistical analysis specialized software showed correlation May, respectively, indexes June Therefore, judge expediency plant vegetation, well creation differential fertilization.