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

Table 8 Parameter estimates of the best linear regression models of the relationship between brown rice yield and post-experiment paddy soil nutrients in 2018–2019

Model	Estimate	SE	t	P	AICc	∆AICc	Akaike weights
2018
Yield ~ available phosphate + available silicic acid + available phosphate × available silicic acid					170.63	0	0.678
Intercept	512.30	74.15	6.91	< 0.001
Available phosphate	− 5.39	4.41	− 1.22	0.246
Available silicic acid	− 7.78	1.76	− 4.41	< 0.001
Available phosphate × available silicic acid	0.27	0.11	2.45	0.030
2019
Yield ~ silicic acid					164.33	0	0.415
Intercept	390.08	64.31	6.07	< 0.001
Available silicic acid	− 6.51	1.69	− 3.85	0.002
Yield ~ available phosphate + available silicic acid					164.60	0.28	0.362
Intercept	318.76	72.69	4.39	< 0.001
Available phosphate	2.40	1.38	1.74	0.105
Available silicic acid	− 5.50	1.68	− 3.27	0.006

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