Determinants of yield differences in small-scale food crop farming systems in Cameroon

Table 1 Effects of residue management and fertilizer use on maize yields in different crop combinations

Residue management	Fertilizer level	Cropping pattern			Residue management mean
Residue management	Fertilizer level	Maize	Maize and colocasia	Maize, colocasia and beans	Residue management mean
Burying of plant material	0–0–0	1.041	0.666	0.894	0.867
	100–60–60	5.191	4.395	3.921	4.502
	200–120–120	6.029	6.18	6.068	6.092
	Mean	4.087	3.747	3.628	3.82
Burn plant material on the surface	0–0–0	1.754	1.555	1.166	1.492
	100–60–60	6.217	5.488	5.389	5.698
	200–120–120	7.11	7.399	5.389	6.633
	Mean	5.027	4.814	3.981	4.607
Bury and then burn plant material	0–0–0	6.257	6.11	5.981	6.116
	100–60–60	7.593	7.385	6.943	7.307
	200–120–120	7.252	7.198	6.977	7.143
	Mean	7.034	6.898	6.634	6.855
Cropping pattern mean		5.383^A	5.153^A	4.748^C

Coefficients of variation: residue management = 20.27%, fertilizer = 12.15%, cropping pattern = 10.05%. LSD_0.05 residue management = 0.595. Means in a row followed by the same uppercase superscript letter are not significantly different at the 5% level according to Duncan's new multiple-range test. Fertilizer ratios represent nitrogen-phosphorus-potassium.

ISSN: 2048-7010