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Iron
Deficiency Symptoms
- Interveinal chlorosis in younger leaves.
- Between vein showing chlorosis and veins remain green in colour
- Later the entire crop exhibits bleached appearance.
Correction Measures
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Apply 50 kg FeSO4 along with FYM for calcareous soils.
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Apply 12.5 kg of micronutrient mixture formulated by the Department of Agriculture,Tamil Nadu mixed with 37.5 kg of sand.
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Apply 50 kg FeSO4 + 12.5 t FYM ha-1 along with 40 kg of elemental sulphur for calcareous soils.
Screening and evaluating maize hybrids for lime induced Fe chlorosis in calcareous soils
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Screening of maize hybrids and their parents for lime induced Fe chlorosis in calcareous soils revealed that the hybrids CO6, CO8 and CO7 were found tolerant to Fe chlorosis while the parent UMI 1230 was highly susceptible to Fe chlorosis in calcareous soils.
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Evaluation of tolerant maize hybrids with various Fe management strategies to improve the crop yield and soil health indicated that soil application of 40 kg S as elemental sulphur either with 5 kg of Fe EDTA or 50 kg FeSO4 + 12.5 t FYM ha-1 was effective in increasing the crop yields by 20-25 % besides improving the Fe availability in soil and its uptake by maize
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