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. 2009 Jun 5;75(15):4993–5000. doi: 10.1128/AEM.02917-08

TABLE 1.

Soil physical and chemical properties, plant biomass and grain yields of the differently amended plots

Sample	Mean ± SD^a
	Amt (mg g⁻¹)			pH (KCl)	Amt (kg ha⁻¹)
	Total C	Total N	Total P	pH (KCl)	Grain yield	Plant biomass
Control	2.16 ± 0.33^A	0.15 ± 0.05^A	0.11 ± 0.0^AB	4.58 ± 0.33^A	167 ± 174^A	480 ± 426^A
C+U	2.22 ± 0.77^A	0.16 ± 0.05^AB	0.10 ± 0.03^A	4.09 ± 0.17^B	207 ± 124^A	627 ± 286^A
Straw	2.48 ± 0.38^A	0.15 ± 0.11^A	0.11 ± 0.02^AB	5.19 ± 0.24^CD	90 ± 60^A	300 ± 192^A
S+U	2.69 ± 0.42^A	0.17 ± 0.07^AB	0.11 ± 0.02^AB	4.76 ± 0.23^AC	233 ± 154^A	600 ± 390^A
Manure	3.57 ± 0.2^B	0.27 ± 0.12^B	0.15 ± 0.02^B	5.51 ± 0.30^D	730 ± 319^B	1,893 ± 779^B
M+U	3.56 ± 0.43^B	0.25 ± 0.05^AB	0.15 ± 0.02^B	5.14 ± 0.36^CD	737 ± 350^B	1,900 ± 806^B

^a

Significant differences between treatments are indicated by different superscript letters (n = 6).