P (mg/pot)

Experimental Plot

Control

Conventional

P-nf

Initial content in the soil

10

10

10

From different fertilizer source

0.00

14

14

Total P content in the pot (a)

10

24

24

Removed through plant uptake (b)

0.10

0.13

0.3

Present in soil after harvest (c)

11

14

30

B + c = d

11.01

14.13

30.3

Amount missing (a-d)

−1.01

9.87

−6.3

Percent (%) P not accounted for

−10.1

41.13

−26.3