CABI Agriculture and Bioscience

Table 4 Effect of single and combined applications of RSB and NPK mineral fertilizers on soil chemical chracteristics

From: Rice straw biochar and NPK minerals for sustainable crop production in arid soils: a case study on maize-wheat cropping system

	Summer season					Winter season
	df	Sum of squares	Mean Square	F	Sig	Sum of squares	Mean Square	F	Sig
Soil salinity (EC, dS m-1)
Between groups	5	0.137	0.027	6.924	0.003	0.137	0.027	6.750	0.003
Within groups	12	0.048	0.004			0.049	0.004
Total	17	0.185				0.186
pH
Between groups	5	0.015	0.003	0.020	1.000	0.022	0.004	0.030	0.999
Within groups	12	1.765	0.147			1.765	0.147
Total	17	1.780				1.787
CEC (cmol_c kg⁻¹)
Between groups	5	29.171	5.834	3.246	0.044	31.054	6.211	3.410	0.038
Within groups	12	21.571	1.798			21.857	1.821
Total	17	50.743				52.911
Available N (mg kg⁻¹)
Between groups	5	643.310	128.662	46.043	< 0..001	718.563	143.713	49.645	< 0..001
Within groups	12	33.533	2.794			34.738	2.895
Total	17	676.843				753.300
Available P (mg kg⁻¹)
Between groups	5	0.784	0.157	0.706	0.630	0.893	0.179	0.800	0.571
Within groups	12	2.667	0.222			2.680	0.223
Total	17	3.451				3.573
Available K (mg kg⁻¹)
Between groups	5	7.688	1.538	0.043	0.999	8.187	1.637	0.046	0.998
Within groups	12	429.166	35.764			429.561	35.797
Total	17	436.854				437.748

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ISSN: 2662-4044

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