Table 4.

Summary statistics for measured and simulated P in the grain, 1968–1975 and 1986–2011 for the Broadbalk wheat experiment. The measured values for grain P were from Section 1 only (see 2.9.1).

Plot no.	Measured		Simulated
	Mean kg P ha− 1	Standard deviation/ kg P ha− 1	Mean kg P ha− 1	Standard deviation/ kg P ha− 1	RMSE (%)	Correlation
3	3.04	1.49	5.36	0.43	89.47	0.29
5	4.05	1.47	5.4	0.43	48.33	0.26
6	9.89	2.23	10.35	0.86	22.5	0.26
7	14.11	2.89	14.58	1.66	20.73	0.29
8	15.38	3.85	17.31	2.38	29.01	0.23
9	16.49	3.59	18.64	3.06	27.8	0.26
15	17.47	4.73	18.77	3.27	28.34	0.33
16	17.33	4.3	18.42	3.57	25.47	0.42
2.1	21.49	4.09	19.36	3.26	20.42	0.47
2.2	17.14	3.57	15.8	2.5	20.24	0.49