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This study evaluated the potential of PlanetScope satellite imagery for assessing relationship between corn plant density and Normalized Difference Vegetation Index (NDVI) under conservation and conventional farming systems. Field data on plant population density were collected using a subfield-based sampling method, and the Normalized Difference Vegetation Index (NDVI) was derived from atmospherically corrected PlanetScope imagery acquired on 1 September 2023. NDVI values and plant density were compared through spatial mapping, regression modeling, and statistical analyses to quantify their relationships within each management system. Results showed that NDVI and plant density exhibited a positive linear correlation in both systems (R2 = 0.47 for conservation agriculture and R2 = 0.54 for conventional agriculture). However, NDVI values were more spatially uniform under conservation agriculture, reflecting improved soil moisture conditions and canopy consistency, whereas conventional agriculture demonstrated higher variability and localized declines in vegetation vigor. The integration of field measurements and satellite-derived indices provided accurate and high-resolution insights into within-field variability. Overall, this study highlights the usefulness of PlanetScope NDVI for crop density estimation and the advantages of conservation agriculture in achieving uniform vegetation cover and enhanced sustainability in corn production.

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PlanetScope-Based Analysis of the Relationship Between Plant Density and NDVI Under Conservation and Conventional Farming Systems

  • 会议论文

  • 发表日期：

    2026年

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  • Alim Pulatov,
  • Sarvar Khamidjonov,
  • Bunyod Mamadaliev,
  • Bobir Kattaev,
  • Sardor Khamidov,
  • Jiaguo Qi,
  • Yi Li,
  • Baochao Wang

摘要

This study evaluated the potential of PlanetScope satellite imagery for assessing relationship between corn plant density and Normalized Difference Vegetation Index (NDVI) under conservation and conventional farming systems. Field data on plant population density were collected using a subfield-based sampling method, and the Normalized Difference Vegetation Index (NDVI) was derived from atmospherically corrected PlanetScope imagery acquired on 1 September 2023. NDVI values and plant density were compared through spatial mapping, regression modeling, and statistical analyses to quantify their relationships within each management system. Results showed that NDVI and plant density exhibited a positive linear correlation in both systems (R2 = 0.47 for conservation agriculture and R2 = 0.54 for conventional agriculture). However, NDVI values were more spatially uniform under conservation agriculture, reflecting improved soil moisture conditions and canopy consistency, whereas conventional agriculture demonstrated higher variability and localized declines in vegetation vigor. The integration of field measurements and satellite-derived indices provided accurate and high-resolution insights into within-field variability. Overall, this study highlights the usefulness of PlanetScope NDVI for crop density estimation and the advantages of conservation agriculture in achieving uniform vegetation cover and enhanced sustainability in corn production.