Selection of the Most Sensitive Waveband Reflectance for Normalized Difference Vegetation Index Calculation to Predict Rice Crop Growth and Grain Yield
2004
Nguyen, Hung The (Seoul National University, Seoul, Republic of Korea) | Lee, B.W. (Seoul National University, Seoul, Republic of Korea), E-mail: [email protected]
A split-plot designed experiment including four rice varieties and 10 nitrogen levels was conducted in 2003 at the Experimental Farm of Seoul National University, Suwon, Korea. Before heading, hyperspectral canopy reflectance (300-1100 nm with 1.55 nm step) and nine crop variables such as shoot fresh weight (SFW), leaf area index, leaf dry weight, shoot dry weight, leaf N concentration, shoot N concentration, leaf N density, shoot N density and N nutrition index were measured at 54 and 72 days after transplanting. Grain yield, total number of spikelets, number of filled spikelets and 1000-grain weight were measured at harvest.
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