Research Article
Multimicronutrient Slow-Release Fertilizer of Zinc, Iron, Manganese, and Copper
Table 1
Solubility, IR, and XRD characteristics of the slow-release fertilizer.
| |
Chemical component | % of total solubilized in | IR absorption in wavenumber (cm−1) | XRD peaks | | Water | 0.33 M citric acid | 0.005 M DTPA | Wavenumber
(cm−1) | Absorbance | Basal spacing () | Intensity (I) |
| | Zn | ND | 93.7 | 83.9 |
447.7
544.3
1073.1
1280.6
1450.7
1656.0
2375.1
3238.4 |
42
40
36
40
38
41
41
35 |
6.29
5.33
4.67
4.41
3.76
3.08
2.66
2.62
2.38
2.34
2.24
1.60 |
16
56
15
15
50
100
16
10
13
8
8
26 | | Fe | ND | 93.2 | 91.8 | | Mn | ND | 90.9 | 80.1 | | Cu | 1.8 | 96.8 | 91.3 | | P | 8.4 | | |
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