TABLE 3.

Treatments for greenhouse incubations used in the fractional factorial design experiments (first phase experiments), which were combinations of independent factors^a

Treatment	Watering	Light	Nutrient(s)	Inoculum	Calcium	Metals
1	+	+	P+N	M	+	+
2	+	+	N	S	+	−
3	+	−	N	M	−	+
4	+	+	P	M	−	−
5	+	−	P	S	+	+
6	−	−	N	M	−	+
7	−	−	P+N	S	−	−
8	−	+	P	S	−	+
9	+	−	P	M	+	−
10	−	+	P	M	−	−
11	−	+	P+N	M	+	+
12	+	+	N	S	−	+
13	+	−	P+N	S	−	−
14	−	−	P+N	S	−	−
15	−	+	N	S	+	−
16	−	−	P	S	+	+
17	+	+	P+N	M	+	+
18	−	−	N	M	+	−

^aP, addition of phosphorus; N, addition of nitrogen; M, mosaic-like inoculum; S, slurry-like inoculum; high (+) or low (−) watering; ambient (+) or shaded (−) illumination; and additions (+) or not (−) of calcium and metals.