Early crop yield estimates could provide up-to-date information on supply, demand, stocks, and export availability through which governing bodies can make better agricultural management plans. This study aims to develop a yield model estimating pre-harvest winter wheat yield at both tillering and flowering stages using a multiple linear regression approach based on the relationship between actual yield and satellite derived crops’ phenological parameters. Four crop parameters (NDVI, Cumulative NDVI, LAI and FPAR) were regressed in combination to find the best applicable model. Regression results showed that correlations for all models among the variables of the flowering period are higher than that of tillering (0.63>0.53). The mean RMSE’s of the observed vs predicted yields for tillering period was 645.9 kg ha-1 and 574.5 kg ha-1 for flowering period. The optimal developed model which consists of NDVI and CNDVI variables provided 76% and 79% of predicting accuracy 3 and 1.5 months before harvest respectively.
General Directorate of Agricultural Research and Policies
TAGEM/TBAD/12 A12/PO7/01
This research study was supported by General Directorate of Agricultural Research and Policies through Agricultural Research Projects (Project No: TAGEM/TBAD/12 A12/PO7/01). We express our gratitude to all project staff for contributing the field studies and office work.
TAGEM/TBAD/12 A12/PO7/01
Primary Language | English |
---|---|
Subjects | Agricultural Engineering |
Journal Section | Research Articles |
Authors | |
Project Number | TAGEM/TBAD/12 A12/PO7/01 |
Publication Date | December 31, 2020 |
Submission Date | July 9, 2020 |
Acceptance Date | October 6, 2020 |
Published in Issue | Year 2020 Volume: 1 Issue: 2 |
International peer double-blind reviewed journal