Foliar fertilization of tobacco
Even if the soil is supplied optimally with nutrients, a need-based care with major, secondary- and trace elements is not always secured. Many factors limit the availability and admission from the soil, e.g., high pH values with trace elements and low pH values with major- and secondary elements, aridity, cold weather, soil compressions and / or waterlogging, and antagonisms (reciprocal effects) between the elements (e.g. too much potassium limits the availability and admission of magnesium).
Special nutrient demands of tobacco
The market proceed of tobacco depends on the leaf quality. Therefore, from the beginning, great importance must be attached on healthy, well-nourished stocks. A lot of leaf masses are formed in a relatively short time, so the nutrient need is very high. By a balanced fertilization via soil with the main nutrients nitrogen, phosphorus, potassium- and, in addition, in bottlenecks with bad availability also via soil - - as well as with high pH values with a foliar manganese fertilizer the aim of a conformist fertilization is reached in the tobacco cultivation.
Root formation, growth, initial development
Amino acids promote the root formation and the plants growth. The faster a plant forms new roots after the line out, the earlier an optimal growth can begin. Moreover it is advisable to dip the trays in an Aminosol® solution or to give the swimming plants a shower with an Aminosol®.
Resistance and vitality by phosphonates
As well as in a lot of other specialized crops the application of potassium phosphonates has proved itself in practice since a lot of years. Several applications of Lebosol®-Kalium Plus or Lebosol®-Magnesium Plus support the plant’s own body’s defences and protect leaf quality and –health. By increased formation of phytoalexins, cell wall thickening and lively enzyme synthesis the plant becomes less susceptible for an infestation with fungi, e.g., of the type Peronospora tabacina (blue mould).
Leaf quality and -color
A fertilization with trace nutrients is not usually necessary in tobacco. However, exceptionally a manganese deficiency will occur in over-calcimined soils (pH >6.5) (chlorose of the younger leaves), which can be repaired with a foliar fertilization with Lebosol®-Mangan GOLD SC.
Particularly on sandy, sour soils and on soils with a high potassium content, as well as with cold and wet a magnesium lack can appear. Magnesium lack appears by yellow and brown leaves which wilt and die. Foliar treatments with the fluid, particularly compatible Lebosol®-Magnesium 400 SC will prevent deficiency symptoms. As sulphur can also be undersupplied at the same moment, the combined application of magnesium and sulphur with Lebosol®-MagSOFT SC presents itself. Magnesium improves the burning qualities of the tobacco, sulphur is important for the nitrogen processing in the plant.
Potassium has a big influence on the glowing quality of the tobacco, phosphorus promotes the cell construction and with it the leaf maturity.
In spring however, the phosphorus lack often appears with cold and wet and with a badly developed root system and shows itself by red colouring of the stalks and leaves.
In wet conditions potassium is washed easily into deeper grounds and expresses itself in necrosis at the leaf tops and leaf edges.
With a combined foliar fertilization with Lebosol®-PK-Max (combination of phosphorus and potassium) a good glowing quality and an earlier maturity is promoted, as well as a faster drying and fermentation. Lebosol®-PK-Max contains no chloride, on the other hand tobacco is very sensitive.
Aminosol® is won from animal protein from the food production. This protein is altered on enzymic way to amino acids. This gives the typical Aminosol®-smell. This smell is percived by hair game far more intensely and is felt much more unpleasant then for human beings. Therefore, hair game avoids areas treated with Aminosol® and makes way to untreated areas.