Mangan fotosentez ve diğer fizyolojik süreçlerde yer alır, birçok ribozom ve kloroplastın yanı sıra enzimlerin bir parçasıdır.
Mangan, bitki kökleri tarafından Mn + 2 formunda emilen redoks mikrobesinlerinden biridir.
Bazı dehidrojenazlar, dekarboksilazlar, kinazlar, oksidazlar, peroksidazların aktivitesi için ve spesifik olarak diğer iki değerlikli, katyonla aktive edilen enzimler tarafından gereklidir ve O2'nin fotosentetik evrimi için gereklidir.
Toprakta bulunan mangan bileşikleri ile toprak pH'i arasında yakın bir ilişki vardır.
Asit topraklarda mangan bileşiklerinin çözünürlüğü nedeniyle mangan alınabilirliği oldukça yüksektir.
Buna karşılık, pH'i yüksek topraklarda mangan alınabilirliği düşüktür.
pH' ın bir birim yükselmesi ile çözünen Mn+2 iyonu miktarı 100 kez azalmaktadır.
Bu nedenle de pH'i yüksek olan topraklarda yetiştirilen bitkilerde mangan noksanlığı sık görülür.
Mangan noksanlığının görülme sıklığı ve şiddeti, mevsimsel koşullara da bağlıdır.
Noksanlık genellikle soğuk ve yağışlı mevsimlerde şiddetli görülmektedir.
Bu koşullarda kökün metabolik aktivitesi düşmekte ve mangan alımı azalmaktadır.
Mangan noksanlığına en duyarlı sebzeler, fasulye, soğan, bezelye, salatalık, domates; en az duyarlı sebze pırasa olup diğer sebzeler orta derecede duyarlıdırlar.
Tarla bitkileri ve meyvelerden mangan noksanlığına özellikle duyarlı olanlar yulaf, bezelye, şeker pancarı, patates, pamuk, yer fıstığı, elma, kiraz ve Narenciyelerdir.
Meyve ağaçlarında mangan noksanlığı belirtileri, kolaylıkla, demir noksanlığı ile karıştırılabilir.
Yaprak analizleri doğru teşhis için önemli bir araçtır.
25 - 30 ppm az Mn bulunursa, mangan noksanlığı muhtemeldir.
20 ppm'den düşük Mn ise kesin noksanlığa işaret eder.
Taş çekirdekli meyvelerden şeftali, kaysı ve erik ağaçlarına göre daha çok mangana ihtiyaç gösterir.

AŞAĞIDAKİ BELİRTİLERİ GÖRDÜĞÜNÜZDE ARAMAKTAN ÇEKİNMEYİN.

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Leaf Fertilizer

With compounds of manganese in the soil there is a close relationship between the pH of soil. Because solubility of manganese receivability manganese compound is high in acid soils.
In contrast, the pH is low manganese high lands affordability. pH of the dissolved Mn + 2 ions with a volume increase and decrease the amount of 100 times. Therefore, manganese deficiency in plants grown in soils with high pH are common.
Manganese deficiency prevalence and severity depends on seasonal conditions. Deficiency often seen in severe cold and rainy seasons. Decreasing the metabolic activity of the roots under these conditions and manganese uptake is decreased.
Most sensitive to manganese deficiency vegetables, beans, onions, peas, cucumbers, tomatoes; other vegetables are least sensitive leek vegetables are moderately sensitive.
Field crops and fruits which are particularly susceptible to manganese deficiency of oats, peas, sugar beet, potatoes, cotton, peanuts, apples, cherries and citrus fruit.
Manganese deficiency is common in citrus. Essentially calcareous soils apple, pear, cherry, fruit trees such as plum is also quite common to manganese deficiency. Especially after prolonged dry periods of prolonged wet weather and manganese deficiencies may arise. Manganese deficiency symptoms are of citrus similar to magnesium deficiency.
Visible yellowing between the veins in the leaves. However, in exchange for magnesium deficiency symptoms in older leaves before being seen, seen manganese deficiency in young leaves. Manganese deficiency in addition to the vessels from chlorosis, yellow spots on the leaf spots occur.
Manganese deficiency of incidence and severity depends on seasonal conditions. Deficiency often seen in severe cold and rainy seasons. Decreasing the metabolic activity of the roots under these conditions and manganese uptake is decreased.
Symptoms of manganese deficiency in the walnut tree, similar to each other. In case of mild to moderate deficiency in young leaves, veins opening this color is very light tint them out of the opening, however, is very visible when the leaves exposed to light. In case of more severe deficiency increases the opening of leaf color and takes the network image. At a later stage, whitish yellow spots on the leaf surface for containers.
Manganese deficiency are similar to symptoms of magnesium deficiency. Visible yellowing between the veins in the leaves. However, in exchange for magnesium deficiency symptoms in older leaves before being seen, seen manganese deficiency in young leaves. In addition to manganese deficiency in dicotyledonous plant chlorosis from vessels, occurs in leaves stains yellow spots. Monocotyledonous plants, especially in the lower parts greenish-gray spots on the leaves of oats and lines are formed.
Manganese deficiency symptoms are similar to each other in the apple trees. In case of mild to moderate deficiency in young leaves, veins opening this color is very light tint them out of the opening, however, is very visible when the leaves exposed to light. In case of more severe deficiency increases the opening of leaf color and takes the network image. At a later stage, whitish yellow spots on the leaf surface for containers.
Manganese deficiency symptoms in fruit trees, easily mixed with iron deficiency. Leaf analysis is an important tool for accurate diagnosis. 25 - If less than 30 ppm Mn is found, manganese deficiency is likely. If less than 20 ppm of Mn indicates a definite deficiency.
Stone from stone fruit peach, apricot and plum trees according to their needs to show more manga.
Suspended in a yellowing of the leaf surface becomes uniform manganese deficiency. Leaves are normally green and pale. Many times, eventually revealed small necrotic spots on the leaves brown and die returns to yellow zones.
Young leaves of manganese deficiency in sugar beet open, bright green in color. Chlorotic leaf lesions occur in the elderly or in reticulated spots. Especially in older vessels retain their dark green leaves. The leaves are curled inwardly from the edges. The amount of manganese received by the sugar beet is very small and can be found in many soil manganese in sufficient quantity.
Therefore, the lack of manganese does not occur frequently. But the lack of manganese can be seen. For example, the pH of soil manganese in the plant due to high unresolved cases, if seen drought or soil is rich in organic matter (if the amount of proposed new or grasslands after organic fertilization) can be seen manganese deficiency. Manganese deficiency in advanced cases when the sugar yield may be reduced by up to 30%.
The progression of symptoms can be prevented by applying foliar manganese Golden. This is only to prevent the yield will drop due to the lack of manganese, do not stay at the same time preventing the negative effects of herbicide used and the outlet after another failure. Insufficiency does not occur in heavy soils or slightly acidic pH 6,0'n under the soil, but the soil is too acidic (pH below 5.0) can be seen manganese poisoning. To be light green leaves and development of deceleration is similar to the symptoms of nitrogen deficiency.
The young leaves are light-colored manganese deficiency in potatoes and pale appearance. Remove vein chlorosis of young leaves and remove them immediately after opening the color as brown spots on many points. They gathered around the main veins and spots more thoroughly correct number increases to the petiole. Plants remain stunted.
Manganese deficiency in leaves of strawberry plants in the veins and leaf edges appear dark green. Search in dull yellowish green color. Violet and coffee colored spots, leaf spots are more intense towards the edges. Symptoms are manifested in the middle leaves
Of manganese deficiency in paddy in young leaves, veins occur between yellow and light green stripes. Older leaves are yellowish green in color. Lines starting from the leaf tip toward the middle section spreads parallel to the veins. Later, dark brown necrotic spots occur. New emerging leaves are short, narrow and light green and will quickly develop necrosis. Tillering is very weak or no. The root growth declined. The grain formation is absent or very small.
Young and old leaves of manganese deficiency in Egypt, yellowish green lines are formed in the middle part of the leaves. Although iron deficiency chlorosis also seen in similar, these symptoms are initially only iron in young leaves. Manganese deficiency in the event of a severe necrotic yellow lines takes a turn and thoroughly turns white. While young leaves are usually pale green and white. Even though slight deficiency is inevitable reduction in the amount of product.
Of manganese deficiency in bean, mottled chlorosis is seen as a network of veins on young leaves and necrosis occurs if the points in the leaf margins at the same time. In case the deficiency is severe, point form large spots that combine necrosis in check. Leaf edges curl and dry. If you lack a long time would be severely yellowing between the veins of older leaves and the leaves are dead persists. Seems to have no grain formation, which is one of well over coffee - black spots available.
Tomato plants are quite sensitive to manganese deficiency in plants. Deficiency manifests itself in the form of leaf color in thin veins opened. Most, including thin veins between the green veins, consists of an image into islands surrounded by light-colored veins. Is fairly typical. Then summer spots in the cells die as a result turns brown. Coffee and coffee also on the petioles and stems consists of cyan colored necrotic spots. If the growing point dies while deficiency. Severe deficiency decreases flowers and fruits. Sugar and vitamin C content of fruit is low.
Lettuce manganese deficiency causes lack of color in the whole plant yellowish green or yellow marked image acquisition to. Primarily in older leaves between the veins pop colors. Brown spots occur as necrosis. This is particularly apparent in the leaf edge spots in older leaves. Varieties containing anthocyanins appears reddish in color.
Cucumber plants are very sensitive to manganese deficiency. Network in the form of leaf deficiency is seen as greenish yellow or completely yellow chlorosis. Initially, the thin veins retain their green color even. Then the color turns white and yellow outside the main veins. Brown spots occur. End leaves are almost completely white. Growth declined and new leaves remain small.
Manganese deficiency in Floral ornamental plants causes symptoms similar to those described in other plants. However, the leaves and blood vessels, according to the shape would be some changes