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Effects of nitrogen application rate and leaf age on the distribution pattern of leaf SPAD readings in the rice canopy.

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Academic year: 2017

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Table 1. Chlorophyll concentration (g m 22 ), chlorophyll a/b ratio, N concentration (N a , g m 22 ), and leaf thickness ( m m) of the four uppermost leaves of rice plants from three plots not subjected to N application.
Figure 2 illustrates the distribution of leaf SPAD values over time in rice canopies subjected to six different N application rates during the 2 years of the study
Figure 5. Temporal dynamics of SPAD readings of labeled rice leaves under six N application rates
Table 2. Results from the fitting of dynamics of SPAD readings to a piecewise function.

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