Table 3 Fe concentration, Fe content and shoot/root Fe content ratio of rice growing in solutions supplied with NH4+-N (AN) or NO3−-N (NN) as the N source and buffered at high pH (7.5) during low EDTA-Fe(II) supplied for 18 days (‘Experiment 2’).

From: NH4+-N alleviates iron deficiency in rice seedlings under calcareous conditions

Rice varieties

N forms

Fe concentration (µg g−1)

Fe content (µg plant−1)

Fe content ratio

Shoot

Root

Shoot

Root

(%) Shoot/root

T43

AN

183 ± 14a

392 ± 26b

580 ± 19a

273 ± 13b

213 ± 10a

NN

103 ± 23b

745 ± 58a

175 ± 31b

671 ± 61a

27 ± 7b

T04

AN

143 ± 27a

436 ± 26b

258 ± 59a

172 ± 27b

154 ± 44a

NN

77 ± 12b

901 ± 34a

93 ± 13b

550 ± 56a

17 ± 4b

  1. Values within a column and within each cultivar the same letter are not significantly different at 5% by Duncan’s multiple range tests.
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