Regression coefficient and p-value (Prob > F) of the model.

Source	Yield (%)		Productivity (mmol h−1)
	Coefficient	Prob > F	Coefficient	Prob > F
Intercept	85.61		0.43
A	0.62	0.5375	2.106 × 10−3	0.7867
B	3.46	0.0031a	−0.12	<0.0001a
C	6.52	<0.0001a	0.034	0.0005a
D	2.81	0.0119a	0.015	0.0694
AB	0.67	0.5864	4.491 × 10−3	0.6384
AC	1.30	0.2977	6.703 × 10−3	0.4851
AD	1.63	0.1952	9.548 × 10−3	0.3240
BC	1.17	0.3475	−5.573 × 10−3	0.5606
BD	0.36	0.7692	−3.937 × 10−3	0.6801
CD	−0.81	0.5091	−5.475 × 10−3	0.5674
A 2	−10.00	<0.0001a	−0.052	<0.0001a
B 2	−3.59	0.0014a	0.024	0.0041a
C 2	−8.01	<0.0001a	−0.042	<0.0001a
D 2	−1.85	0.0630b	−0.011	0.1468

^aSignificant at “Prob > F” less than 0.05.

^bInsignificant at “Prob > F” more than 0.05.