Pigeon Pea and Cowpea-Based Cropping Systems Improve Vesicular Arbuscular Mycorrhizal Fungal Colonisation of Subsequent Maize on the Alfisols in Central Malawi

Table 3

Pearson correlations between VAM colonisation percentages and plant tissue P concentration (% P), plant tissue nitrogen concentration (% N), total dry matter, and grain yields for year two.

Treatment	VAM colonisation (%) and parameters	Lilongwe		Dowa
			P value		P value
MZ + 0N	% P	0.082	0.725	0.139	0.099
	% N	0.302	0.184	0.294	0.196
	TDM	0.204	0.365	0.233	0.309
	Grain	0.386	0.084	0.257	0.264
MZ + 23N	% P	0.300	0.187	0.169	0.747
	% N	0.341	0.130	0.266	0.244
	TDM	0.408	0.067	0.522
	Grain	0.513		0.597

Note. Correlations were only presented for level of VAM fungal colonisation (%) against the other parameters; = significant at P < 0.05; = correlation coefficient; MZ = maize; MZ + 0N = Maize with nitrogen fertilizer application; MZ + 23N = maize with 23 kg N ha⁻¹ application; TDM = total dry matter yield.