Fig. 5: Effects of unchelated PDMA on rice in calcareous soil.
From: Development of a mugineic acid family phytosiderophore analog as an iron fertilizer
a SPAD values of the newest leaves after a single application of 1–30 µM unchelated PDMA compared with other Fe chelates at 6 days after transplantation. PDMA was also mixed with equimolar FeSO4 or Fe2(SO4)3. Values are the means of three replicates in which each replicate is average of three plants in each pot. Different letters indicate significant differences at P < 0.05 by Tukey’s honestly significant difference test (two-sided). P-values for one-way analysis of variance (ANOVA) are follows: 0 days, 0.5287; 4 days, <0.0001; 6 days, <0.0001; 8 days, <0.0001; 11 days, <0.0001; 14 days, 0.0017. b Rice plants at 14 days after a single application of the Fe chelates. PDMA proline-2′-deoxymugineic acid, EDDHA ethylenediamine-N,N′-bis(2-hydroxyphenylacetic acid), EDTA ethylenediaminetetraacetic acid, SPAD soil and plant analyzer development.
