VEGETATION INDICES AND THEIR CORRELATION WITH SECOND-CROP CORN GRAIN YIELD IN MATO GROSSO DO SUL, BRAZIL
نویسندگان
چکیده
The emergence of satellites covering new electromagnetic wavelengthsallowed developing different vegetation indices, enabling the study theircorrelation with grain yield. In this sense, aimed to evaluate accuracy between mean values seven indices and corn yield in field by applying linear regression equations. NDVI, NDRE, GNDVI, GRNDVI, PNDVI were used, changes proposed equations GRNDVI PNDVI, which red wavelength was replaced edge. multispectral bands provided Sentinel-2A Sentinel-2B imaging instruments used as a source data calculate while recorded harvester for survey data. A high correlation observed replacement edge improves Moreover, GNDVI NDVI easily saturate, reaching maximum not allowing distinction sample classes. Therefore, PRENDVI GRENDVI are recommended estimating
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ژورنال
عنوان ژورنال: Revista Brasileira de Milho e Sorgo
سال: 2021
ISSN: ['1676-689X', '1980-6477']
DOI: https://doi.org/10.18512/rbms2021v20e1195