The Scientific World Journal

Research Article

Effects of Different Rates of Poultry Manure and Split Applications of Urea Fertilizer on Soil Chemical Properties, Growth, and Yield of Maize

Table 2

Effects of poultry manure and split urea fertilizer on soil chemical properties.

Split urea fertilizer (kg ha⁻¹)

Poultry manure rate (t·ha⁻¹)

pH (water)

OM (%)

N (%)

P (mg kg⁻¹)

K (cmol kg⁻¹)

Ca (cmol kg⁻¹)

Mg (cmol kg⁻¹)

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Site II

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Site II

Control

5.70b

5.59b

2.08e

2.02g

0.14e

0.13i

6.50d

4.22c

0.18h

0.26c

0.76d

2.12f

0.50c

0.43h

5.84a

6.71a

2.89b

3.50b

0.16d

0.14hi

8.96b

4.85a

0.20fg

0.52a

1.15b

2.42d

0.57b

1.64b

5.89a

6.78a

2.99b

3.60a

0.16d

0.15gh

9.48a

4.86a

0.25d

0.53a

1.25a

2.42d

0.67a

1.65b

120

5.48e

5.59b

2.18cd

2.21e

0.16d

0.20f

6.51d

4.68b

0.19gh

0.29b

0.98c

2.36e

0.49c

0.82g

5.52d

6.65a

2.91b

2.92c

0.18c

0.22e

9.84a

4.89a

0.20e

0.53a

1.18b

2.57c

0.58b

0.84g

5.58d

6.71a

3.01ab

2.30d

0.19bc

0.23d

9.90a

4.89a

0.27c

0.54a

1.26a

2.58c

0.69a

1.20e

90 + 30

5.64cd

5.58b

2.21cd

2.20ef

0.18c

0.25c

6.53d

5.25b

0.28c

0.30b

0.77d

2.45d

0.49c

0.99f

5.74b

6.48a

3.07a

3.63a

0.19bc

0.27b

7.70cd

5.77a

0.31ab

0.54a

1.15b

2.78b

0.58b

1.34d

5.76b

6.48a

3.15a

3.68a

0.20b

0.29ab

8.06b

5.79a

0.33a

0.54a

1.17b

2.78b

0.68a

1.64b

60 + 30+30

5.74b

5.60b

2.22cd

2.18f

0.19bc

0.29ab

6.60d

5.25b

0.29b

0.32b

0.79d

2.45d

0.50c

1.44c

5.86a

6.44a

3.09a

3.67a

0.22ab

0.31a

9.98a

5.79a

0.32a

0.56a

1.28a

2.86a

0.61ab

1.94a

5.88a

6.48a

3.11a

3.69a

0.23a

0.31a

9.99a

5.80a

0.32a

0.56a

1.29a

2.79b

0.61ab

1.94a

Values followed by similar letters under the same column are not significantly different at P = 0.05 according to Duncan’s multiple range test.