TABLE 5.

Regression coefficient and analysis of variance for the quadratic model for the nematicidal activity (mortality) of Trichoderma longibrachiatum T6 culture filtrates.

Term	Effect	Coefficient	Df	Adj SS	Adj MS	F-value	p-value
Model			6	61.884	10.314	16.690	0.004*
Linear			6	61.884	10.314	16.690	0.004*
Constant		71.251					0.000*
i. Initial pH	–3.098	–1.549	1	28.799	28.799	46.600	0.001*
ii. Incubation temperature (°C)	–0.702	–0.351	1	1.477	1.477	2.390	0.183
iii. Inoculation volume (ml)	–2.215	–1.108	1	14.719	14.719	23.820	0.005*
iv. Liquid volume (ml)	0.925	0.462	1	2.567	2.567	4.150	0.097
v. Rotating speed (rpm)	0.632	0.316	1	1.197	1.197	1.940	0.223
vi. Incubation day (days)	2.092	1.046	1	13.125	13.125	21.240	0.006*
Residual error			5	3.09	0.618
Total			11	64.974

F is Fisher’s function; probability *p < 0.05 corresponds to significance.