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Fertilizers

Iron and manganese:
Biological system in animals, particularly iron, is very important and has a major role, while manganese is a secondary element, and also show toxic effects, however, in redox reactions in the soil, the degree of iron Manganese is of secondary importance. Iron and manganese have a key role in the establishment of the upper layers of soil organic matter in wet areas are a feeding ground for the roots of all plants and microorganisms and provides the carbon cycle. Manganese in the soil pores that have poor ventilation, oxygen (O2) to produce the + Fe2 compounds and organic molecules, which tend not to remain as oxides. Similarities in the behavior of Fe and Mn are present in plants and soils, which are as follows:
1 - Iron and manganese are both among the elements because they have more than one capacity.
2 - Iron and manganese are both soluble bivalent mode (+ + Fe + +, Mn)
3 - iron and manganese in both the oxide, hydroxide and oxychloride hydroxides are present in soils.
4 - in comparison with the amount of clay, iron and manganese in small quantities are absorbed by plants.
5 - In anaerobic conditions, especially Drkhakhay acid, iron and manganese concentrations may be increased to toxic levels.
6 - Drkhakhay acid phosphate, iron and manganese are involved in maintenance.
7 - Although the form + + Fe + + Mn in soils and are fully functional but non-dynamic plants are iron and manganese.
8 - The iron and manganese in the process of photosynthesis in plants Dvnsr are involved.
9 - The two elements can be partly replaced by other elements of plant food. Minor amounts of iron can be substituted for Mo in the plant as a metal cofactor is essential for the rehabilitation of nitrate, manganese can in phosphorylation reactions and transport groups, to some extent be replaced by magnesium.
10 - Iron and manganese in soil can both cause certain colors.
Iron and manganese deficiency symptoms:
Element is a non-active iron in plants. Thus, its deficiency symptoms first appear on young leaves. Given that 90% of the iron in the leaves, the chloroplasts and mitochondria are iron deficiency causes loss of GREENS Rx (chlorophyll) plant is a pale-green leaves are green and yellow discoloration between the veins developed. In acute deficiency, young leaves are completely white. Such symptoms typically seen in sorghum and especially in soils are neutral to alkaline. Sorghum represents an excellent plant for the diagnosis of iron deficiency is considered. Rice by rice seedlings in nursery Drkhakhay neutral to alkaline earth in the early stages of growth in similar soils, may show a similar deficiency.
Manganese is also a non-dynamic elements such as iron deficiency in plants and symptoms appear in younger leaves. Yellow-green leafy plants such as soybeans and corn in the same vein of iron deficiency has been observed. Deficiency is different in other products.

Iron and manganese toxicity:
Acid soils with large amounts of manganese, which may be caused by Mn toxicity in plants. In very acidic soils penile Sul in southern United States, leaves toothed (serrated leaves) of cotton is due to manganese toxicity. Other plants, like soybeans, tobacco and canola in such soils may show signs of manganese poisoning. Mn toxicity has also been reported in rice paddies Drkhakhay acid. Iron toxicity may also occur in such soils can.
Fertilizers, iron and manganese: