Nutrients

Amount in soil

Okpe

Ekore

Uduvwoku

NO₃-N

20.670 ± 0.880^a

9.880 ± 0.080^b

7.690 ± 0.040^b

NH₄-N

3.274 ± 0.340^a

1.066 ± 0.066^b

0.734 ± 0.0666^b

PO₄-P

20.000 ± 0.600^a

4.300 ± 0.300^b

2.300 ± 0.300^c

K

156.600 ± 7.209^a

99.246 ± 0.046^b

74.440 ± 0.003^c

Amount in Cassava tuber

Okpe

Ekore

Uduvwoku

NO₃-N

82.500 ± 0.981^a

36.200 ± 0.529^b

14.100 ± 0.173^b

NH₄-N

18.636 ± 0.222^a

8.177 ± 0.118^c

3.187 ± 0.038^b

PO₄-P

1.077 ± 0.023^c

0.770 ± 0.017^a

0.647 ± 0.009^b

K

6455.700 ± 9.241^a

6301.800 ± 6.535^b

3515.700 ± 0.688^c

Amount in oil bean seed

Okpe

Ekore

Uduvwoku

NO₃-N

145.830 ± 1.975^a

96.433 ± 1.302^b

103.760 ± 1.729^c

NH₄-N

32.943 ± 0.439^a

21.783 ± 0.292^b

23.440 ± 0.363^c

PO₄-P

0.737 ± 0.008^a

0.563 ± 0.008^b

0.263 ± 0.008^b

K

3387.300 ± 7.458^a

2040.200 ± 9.325^b

1425.900 ± 3.764^b