Smartphone‐based estimation of green cover depends on the camera used

Smartphone-based visual assessment of vegetation cover is a promising, fast, and repeatable approach that allows land managers to compare measurements on their farm with other farms. This study determined the influence smartphone device green several crops. The hypothesis was different smartphones would provide similar (reflectance) for management purposes (i.e., <10% difference). Forty fields in Finland were sampled between 10 28 July 2020 Motorola Moto G7 Samsung Galaxy A6 smartphones. results compared also Sentinel-2 remote sensing normalized difference index (NDVI) biomass quadrants. two had reflectance values correlated each other. Both NDVI measured Sentinel 2 satellite sensor biomass. These findings suggest smartphone-based monitoring can be used at least classify low, medium, high density but from cameras should not compared.