Iron (Fe) – Iron

Plants can absorb iron in the form of Fe2+ and Fe3+, almost all iron on the earth’s crust is in the form of Fe3+, iron in the form of Fe2+ is absorbed and persists more in the crop, This is relatively soluble, but easily oxidized to Fe3+, then precipitated.

Fe3+ is insoluble in high neutral medium, so the iron content is very low in plants grown in alkaline soils and in soil rich in calcium. Moreover, in soils, iron easily associates with phosphates, carbonates, magnesium, calcium and hydroxide ions.

Fe in the soil

– High content, about 10% and usually in the form of oxides, hydroxides, phosphates and silicates. In a well-ventilated, alkaline-earthed environment, iron is in chemotherapy III, while in submerged, acidic conditions, iron is usually in the form of chemotherapy. Less iron deficiency, which is often associated with iron toxicity due to iron combined with organic substances that form soluble iron complexes.

– Fe mineral

– Poor dissolution & ability to dissolve very quickly at high pH

Organic Fe

– Mineralization from Fe organic matter or chelate

– Fe soluble in solution

– If pH ≥ 7, Fe dissolved in very low solution.

– Plants absorb Fe primarily from Fe chelates in nature, Fe solubility

1. The effect of iron on the physiological process of plants:

– electronic transport (photosynthesis & respiration)

– chlorophyll biosynthesis

– The enzymes involved in chlorophyll synthesis contain Fe

– Fixed N bio

– The main enzyme involved in fixing nitrogenase (nitrogenase) contains Fe

Deodorizing Nitrate

Iron (Fe2+) required for the synthesis and maintenance of chlorophyll in plants, which is a major component of many enzymes, plays an important role in the metabolism of chlorophyll.
Iron is essential for the growth and development of plants and is also essential for the development of animals. It is present in the composition and promotes the activity of many enzymes which in turn affects many biochemical processes in the plant:

– reduction of nitrate.

– The process of photosynthesis (reduction of CO2 and chlorophyll activation) in organic compounds (glucos, protit and growth regulators).

The role of iron is very special in the formation of high molecular organic compounds and the iron (Fe2+) content found in organic matter in plants is essential to the nutrition of young animals.

Expression of iron deficient plants

Iron deficiency symptoms usually occur only in the following cases:

– High pH soil: This phenomenon is commonly seen in many plants such as rice, wheat, sorghum, corn, beans, soybeans, grass lands, some fruit trees, mulberry and ornamental plants.

– Iron deficiency is often accompanied by high pH due to liming, low moisture, excessive application of P, unbalanced soil in Cu, Mn, CO2.

– Low temperature.

                                           Iron deficiency often causes yellowing of the plant due to loss of chlorophyll.

                                                      Leaves are blue, no spots, the veins of the leaves are green

+ Yellow gold in the typical leaf vein, the young leaves are affected first, the top and the leaf edge that hold the green for the longest.

                                                                    Symptoms of iron deficiency in legumes

Expression of iron deficiency of plants expressed through leaves

                                                                            Sugar cane is lacking in iron

                             Leaf yellow and necrotic due to Fe deficiency and often associated with high lime or cold temperatures

+ In case of lack of weight, all veins and veins turn yellow and eventually become pale.

                                                                              Golden young leaves in tomatoes

2. Materials for the production of manure containing iron

1. Iron (II) sulphate (FeSO4.7H2O)

Blue powder

Content: Fe: 20%, S: 18.8%

2. Iron (III) sulphate (Fe2(SO4)3.4H2O)

Content: Fe: 20%

Iron (II) carbonate (FeCO3.2H2O)

Brown or white powder

Content: Fe: 42%

4. Iron Chelate (EDTA-Fe)

Chemical name: Ethylenediaminetetraacetic acid, iron sodium complex

Chemical formula: EDTA-Fe (C10H12FeN2NaO8)

Product form: yellow powder

Chelate content: 13%

pH (at 1% concentration): 4 – 6.5

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