Agronomy Journal -- Johnson et al. 94 (5): 1071 Figure IG5

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Fig. 5. Rhizoma peanut stem neutral detergent fiber (NDF) response to percentage of incident photosynthetic photon flux density (PPFD) for harvests (H) in 1989 [Harvest 1 ( ${blacksquare}$ ): y = 617 - 0.87x, r² = 0.72, root mean square error (RMSE) = 14.8; Harvest 2 ( ${blacktriangleup}$ ): y = 546 - 1.17x, r² = 0.90, RMSE = 10.4; Harvest 3: not significant, mean = 495 g kg^-1] and 1990 [Harvest 1 ( ${blacksquare}$ ): y = 516 - 0.90x, r² = 0.61, RMSE = 19.6; Harvest 2 ( ${blacktriangleup}$ ): y = 571 - 0.78x, r² = 0.66, RMSE = 15.2; Harvest 3 (•): 574 - 0.79x, r² = 0.70, RMSE = 14.0].