Iron

Iron

Iron  - - Soil. Organic and Natural Products - Fertilizer
Iron - Soils. Organic and Natural Products - Fertilizers
Iron (Fe) in Soil - pH is a very important factor in interpreting iron tests. In addition, crops vary a great deal in sensitivity to iron deficiency. Normally a medium level would be adequate for most soils. If iron is needed it would be best applied foliar.
Soil Trace elements include : iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn).
pH
Nitrogen (N)
Phosphorus (P)
Potassium (K)
Calcium (Ca)
Magnesium (Mg)
Sulphur (S)
Copper (Cu)
Iron (Fe)
Manganese (Mn)
Zinc (Zn)
Sodium (Na)
Boron
Salt Salinity
N-P-K  -
Soil
Fertilizer Soil Iron 2024
Gardening: Feeding iron-hungry plants Detroit News
Organic fertilization co-selects genetically linked antibiotic and metal(loid) resistance genes in global soil microbiome Nature.com
Impact of foliar application of iron and zinc fertilizers on grain iron, zinc, and protein contents in bread wheat (Triticum aestivum L.) Frontiers
The Best Soil Test Kits of 2024, According to Testing Bob Vila