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Fig. 6 | CABI Agriculture and Bioscience

Fig. 6

From: Effects of ground bamboo application on weed suppression and rice production: a 3-year paddy field experiment

Fig. 6

Relationships between brown rice yield and available phosphate and silicic acid in post-experiment paddy soils, in paddy field experiments conducted in 2018–2019 according to multiple linear regression analyses. Available silicic acid in post-experiment paddy soils was used as the predictor, and the residual of brown rice yield regressed onto available phosphate in post-experiment paddy soils was used as the response variable. Regression lines are shown for low (< 0.15 g kg−1, solid line with closed diamonds, y =  − 717.33x + 501.99, R2 = 0.67, P = 0.002) and high soil-available phosphate (≥ 0.15 g kg−1, dashed line with open diamonds, y =  − 174.88x + 385.20, R2 = 0.47, P = 0.204). For available silicic acid in 2019, brown rice yield was regressed onto available silicic acid in post-experiment paddy soils (y =  − 650.45x + 390.08, R2 = 0.51, P = 0.002)

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