Table 1.

Treatments tested (g/bag) in the experiment.

Treatment	WS	SPS	WB	Gypsum	CaCO3
T1	6.000	0	0	300	0
T2	5.400	0	600	300	0
T3	4.800	0	1.200	300	0
T4	4.200	0	1.800	300	0
T5	3.000	3.000	0	300	60
T6	2.700	2.700	600	300	54
T7	2.400	2.400	1.200	300	48
T8	2.100	2.100	1.800	300	42
T9	0	6.000	0	300	120
T10	0	5.400	600	300	108
T11	0	4.800	1.200	300	96
T12	0	4.200	1.800	300	84
T13	Commercially controlled based substrates (A) (6.5 kg/bag)
T14	Commercially controlled based substrates (B) (6.5 kg/bag)

WS, wheat straw; SPS, spent Pleurotus ostreatus (Jacq,) P. Kumm. substrate; WB, wheat bran; T, treatment; T1, WS 6.000 g; T2, WS 5.400 g + WB 600 g; T3, WS 4.800 g + WB 1.200 g; T4, WS 4.200 g + WB 1.800 g; T5, WS 3.000 g + SPS 3.000 g + CaCO₃ 60 g; T6, WS 2.700 g + SPS 2.700 g + WB 600 g + CaCO₃ 54 g; T7, WS 2.400 g + SPS 2.400 g + WB 1.200 g + CaCO₃ 48 g; T8, WS 2.100 g + SPS 2.100 g + WB 1.800 g + CaCO₃ 42 g; T9, SPS 6.000 g + CaCO₃ 120 g; T10, SPS 5.400 g + WB 600 g + CaCO₃ 108 g; T11, SPS 4.800 g + WB 1.200 g + CaCO₃ 96 g; T12, SPS 4.200 g + WB 1.800 g + CaCO₃ 84 g; T13, commercially controlled based substrates (Quintanar del Rey); T14, commercially controlled based substrates (Villamalea).