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Environmental Systems Research

Table 5 Effect of nitrogen and phosphorus fertilizer on Obatanpa maize grain P uptake at harvest at Ejura during the major and minor season, 2008

From: The effect of phosphorus and nitrogen fertilizers on grain yield, nutrient uptake and use efficiency of two maize (Zea mays L.) varieties under rain fed condition on Haplic Lixisol in the forest-savannah transition zone of Ghana

Treatment combination

Grain P uptake (kg ha−1)

N (kg ha−1)

P (kg ha−1)

Expt. 1

Expt. 2

Expt. 3

Expt. 4

N1P1

0

0

4

3

3

2

N1P2

0

30

6

4

4

3

N1P3

0

60

5

3

4

4

N2P1

40

0

6

4

5

3

N2P2

40

30

11

9

9

6

N2P3

40

60

12

9

10

8

N3P1

80

0

7

4

5

4

N3P2

80

30

15

12

13

10

N3P3

80

60

16

13

14

11

N4P1

120

0

7

5

6

5

N4P2

120

30

16

12

14

10

N4P3

120

60

17

13

15

12

Mean

  

10

7

9

7

Effects

F-probability

N

**

**

**

**

P

**

**

**

**

N * P

**

**

**

**

  1. Expt. 1 Ejura farm major season, Expt. 2 Agric College major season, Expt. 3 Ejura farm minor, Expt. 4 Agric College minor season, NS non-significant
  2. *, ** Significant at 0.05 and 0.01, respectively
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