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Predicting Rice Yield Using Canopy Reflectance Measured at Booting Stage

^a No. 70-11, Beishiliao Liau, Beishiliao Village, Madou Town, Tainan County, 721, Aletheia Univ., Taiwan, ROC
^b Dep. of Soil and Environmental Sciences, National Chung-Hsing Univ., Taichung, 402, Taiwan, ROC
^c Dep. of Agronomy, Chiayi Station, TARI. Chiayi, Taiwan, ROC

View larger version (26K): [in a new window]   Fig. 1. Typical temporal changes of rice canopy reflectance spectra.

View larger version (34K): [in a new window]   Fig. 2. Temporal patterns of (A) NDVI, (B) GNDVI, (C) NIR/RED, and (D) NIR/GRN as a function of N rate, measured in first crop season 2000.

View larger version (16K): [in a new window]   Fig. 3. Predicted vs. observed grain yields for (A) first crop season and (B) second crop season of 1999–2001.