Long-term monitoring of rainfed wheat yield and soil water at the loess plateau reveals low water use efficiency.

PLoS One · 2013 · PMC3841156 · PMID 24302987

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highly significantno p-value reported

Relationships between yield and annual rainfall (p = 0.028), and between yield and growing season rainfall (p = 0.027) were highly significant ( Figures 5 ).

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