Fig. 4.

Germination index (GI) for lettuce (L. sativa) (a), cucumber (C. sativus) (b), celia (C. argentea) (c), soybean (G. max) (d), rice (O. sativa) (e) and wheat (T. aestivum) (f) at three composting periods for treatments using distinct raw materials*. *T1 (control): sawdust and float sludge (50:50, v:v); T2: sawdust, float sludge and meal from dead pigs (50:20:30); T3: sawdust, float sludge and meal from dead pigs (50:10:40); T4: sawdust, stabilizing compost and meal from dead pigs (50:20:30); T5: sawdust, stabilizing compost and meal from dead pigs (50:30:20). ^A,B,CMeans (SEM) with distinct superscripts differ across periods by at least P < 0.05. ^a,b,cMeans (SEM) with distinct superscripts differ across treatments by at least P < 0.05. The adopted limits (horizontal lines) are shown in Table 3