Compost and Crude Humic Substances Produced from Selected Wastes and Their Effects on Zea mays L. Nutrient Uptake and Growth

Table 2

Treatments evaluated in a pot experiment using Zea mays L. as test crop.

Treatment	Urea (g)	ERP (g)	K source (g)
T0	0.00	0.00	0.00
T1	4.84	7.45	2.48 MOP
T2	3.24	4.95	53.02 RS humin
T3	3.58	5.67	68.90 RH humin
T4	3.86	6.36	63.22 SD humin
T5	3.94	6.48	43.39 EFB humin
T6	2.92	4.51	50.95 RS compost
T7	0.83	0.00	164.46 RH compost
T8	0.26	1.07	227.48 SD compost
T9	3.71	5.31	53.05 EFB compost

Each treatment from T1 to T9 supplies equivalent nutrients at rate of 2.23 g N, 2.23 g P₂O₅, and 1.49 g K₂O [2].