International Journal of Agronomy

Research Article

Rice Yield Improvement by Sugarcane Filter Cake Fertilizer Application in the Protected Dyke

Table 4

Some chemical properties of rice soil before and after the experiment in the Cho Moi district.


Experiment/criteria		pH_H2O1 : 2.5	EC 1 : 2.5 (mS/cm)	OC (%)	N (%)	Total P (%P₂O₅)	Avai P (mgP/kg)	K⁺	Na⁺	Ca⁺	Mg⁺
Experiment/criteria		pH_H2O1 : 2.5	EC 1 : 2.5 (mS/cm)	OC (%)	N (%)	Total P (%P₂O₅)	Avai P (mgP/kg)	meq/100 g

Beginning		5.87	0.6	2.00	0.175	0.088	17.89	0.116	0.167	12.5	4.81

After experiment	NT1	5.23	0.396	2.72	0.196	0.143	42.9	0.13	0.21	8.27	3.95
	NT2	5.10	0.336	2.55	0.168	0.12	36.8	0.11	0.249	7.83	4.15
	NT3	5.07	0.416	2.69	0.182	0.12	31.7	0.13	0.291	8.19	4.32
	NT4	5.64	0.474	2.95	0.21	0.139	39.1	0.17	0.285	7.86	4.67

Note. NT1: fertilize according to farmers (224 kg N + 148 kg P₂ O₅) ha⁻¹. NT2: fertilize according to farmers +6 tons ha⁻¹ cow manure composted with straw. NT3: fertilize according to farmers +6 tons ha⁻¹ cow manure composted with straw buried 15 cm deep. NT4: fertilize according to farmers +2 tons ha⁻¹ sugarcane filter cakes. The bold data is emphasized for data at the beginning of the experiment only, it does not mean and show the significance.