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Estimation of harvest index in wheat crops using a remote sensing-based approach

Field Crops Research, ISSN: 0378-4290, Vol: 256, Page: 107910
2020
  • 25
    Citations
  • 0
    Usage
  • 69
    Captures
  • 0
    Mentions
  • 64
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    25
    • Citation Indexes
      25
  • Captures
    69
  • Social Media
    64
    • Shares, Likes & Comments
      64
      • Facebook
        64

Article Description

This paper presents an operational methodology for the estimation of the harvest index (HI) in commercial fields planted with wheat crops ( Triticum aestivum L.) using a Remote Sensing based approach. The approach proposed variants from the methodologies reported by Kemanian et al., (2007) and Sadras and Connor (1991) for the estimation of the HI using the ratio between variables related with biomass production, i.e. absorbed photosynthetically active radiation (APAR), crop transpiration (T) and crop transpiration coefficient (K t ) as defined in the FAO-66 manual. The estimation of these variables along the growing season integrates time series of Remote Sensing satellite images and meteorological data into the crop growth models. The proposed models for estimation of HI were calibrated using an extensive HI dataset obtained from 19 commercial fields (empirical data) planted with wheat. The fields were subject to different water and nutrient management, resulting in empirical HI values from 0.23 to 0.55. Future applications of the proposed approach are the operational estimation of wheat production at both regional and local scales and the estimation of the within-field variability of crop production considering the variability of HI values within the field.

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