Influences of Farming Practices on Soil Properties and the 2-Acetyl-1-pyrroline Content of Khao Dawk Mali 105 Rice Grains

Table 2

Pearson’s correlation matrix for the 2-acetyl-1-pyrroline (2AP) concentrations, physicochemical properties, and soil microbial populations.

values	2AP	pH	OM	Humic acid	EC	CEC	Total N	Bacteria	Actinomycetes	Fungi
r values
2AP
pH	−0.4333
OM	0.8858	−0.2238
Humic acid	0.6881	−0.2612	0.5402
EC	0.5259	−0.234	0.3568	0.4115
CEC	0.1946	−0.6121	0.0652	0.0936	0.3822
Total N	0.8857	−0.2238	1	0.5402	0.3568	0.0652
Bacteria	0.7646	−0.341	0.6269	0.3964	0.5007	0.2447	0.6269
Actinomycetes	0.8364	−0.2159	0.7768	0.6595	0.5958	0.1334	0.7768	0.4837
Fungi	0.7509	−0.3731	0.793	0.5179	0.5069	0.0542	0.7930	0.6334	0.6518

, significant correlational  < 0.05 and 0.01, respectively.