Agronomy Journal -- Tolk et al. 98 (3): 730 Figure IG5

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Fig. 5. The relationship of vapor pressure deficit (VPD) and nighttime evapotranspiration (ET_N) for (A) alfalfa, (B) deficit-irrigated cotton on the NE lysimeter, (C) fully irrigated cotton on the SE lysimeter, and (D) dryland cotton on the west lysimeters.