Table 4.

Analysis of variance (ANOVA) results of quadratic model to Penetrometer and Wind Erosion.

Source	df	Penetrometer				Wind Erosion
		Sum of squares	Mean square	F-value	P-value	Sum of squares	Mean square	F-value	P-value
Model	14	3.419	0.186	26.241	<0.0001	312.123	16.503	59.069	<0.0001
A	1	0.444	0.457	47.777	<0.0001	60.807	53.227	148.425	<0.0001
B	1	0.340	0.298	36.152	<0.0001	1.420	1.140	3.871	0.0601
C	1	0.530	0.381	63.469	<0.0001	2.697	2.819	9.206	0.0081
D	1	1.316	1.209	170.115	<0.0001	132.874	101.968	525.369	<0.0001
AB	1	0.003	0.003	0.342	0.5003	0.050	0.050	0.150	0.6521
AC	1	0.025	0.028	3.203	0.0885	0.050	0.050	0.150	0.6521
AD	1	0.025	0.028	3.113	0.0885	0.050	0.050	0.150	0.6521
BC	1	0.003	0.003	0.322	0.5963	0.050	0.050	0.150	0.6521
BD	1	0.025	0.027	0.300	0.5789	0.050	0.050	0.150	0.6521
CD	1	0.000	0.000	3.090	0.0888	0.050	0.050	0.150	0.6521
A2	1	0.026	0.023	0.060	0.7184	8.975	8.895	30.521	<0.0001
B2	1	0.140	0.162	0.060	0.7144	0.003	0.002	0.008	0.8882
C2	15	0.122	0.009	3.555	0.0854	0.000	0.000	0.001	0.8974
D2	10	0.113	0.012	16.650	0.0006	61.400	60.885	302.125	<0.0001
Residual	5	0.000	0.000			4.448	0.358
Lack of Fit	29	2.733	0.143			4.258	0.436
Pure Error	14	2.616	0.387			0.000	0.000
Cor Total	1	0.344				250.700
Model Summary Statistics
Precision		Penetrometer					Wind Erosion
		R2	Adj-R2	Adequate Precision			R2	Adj-R2	Adequate Precision
		0.9541	0.9200	21.521			0.9710	0.9600	30.514