Analysis of NDMI index values for satellite images decrypting of irrigated land

The experience of using the normalized difference humidity index (NDMI) when deciphering satellite images of irrigated land is covered in this article. It is noted that the NDMI distribution function has a domed graph shape similar to the NDVI vegetation index distribution function. It has been shown that in the early stages of culture development, differences in NDMI values do not have statistical significance. Soil without vegetation, including irrigated, has negative NDMI values (–0.05 ± 0.01), while irrigated crops can have an NDMI of about 0.4. This makes it possible to make the assumption that NDVI is more preferable to use crops for the analysis of not soil moisture, but the level of water stress in order to assess the need for irrigation