Estimation of Nitrogen Content in Alfalfa Plants Based on Multi-Source Feature Fusion.

Plants (Basel) · 2026 · PMC12987103 · PMID 41829783

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highly significantno p-value reported

Correlation Between Vegetation Index (VI) and PNC Pearson correlation analysis between vegetation indices and alfalfa PNC ( Figure 2 ) revealed that during the branching stage, PNC showed highly significant correlations with SIPI, MCARI, and REOSAVI, with correlation coefficients of 0.67, 0.59, and 0.57, respectively.

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a decreasing trendno p-value reported

The average PNC of alfalfa exhibited a decreasing trend with advancing growth stages, with values of 3.31%, 2.75%, and 2.64% at the branching stage, budding stage, and initial flowering stage, respectively. 2.2.

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