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Tobacco

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Foliar fertilization in tobacco

Foliar fertilization can be done preventive as integrated part of the fertilization strategy or if it comes to visible symptoms because of nutrient deficiency.

 Besides soil analysis, the additional leaf analysis can help to analyze and recognize the availability for each nutrient.

 

Availability of nutrients

Many parameters in the soil can limit the availability of nutrients – high pH-values can block micro-nutrients, low pH-values can block macro-nutrients. But also dry and cold weather conditions, soil texture and some nutrient antagonism (e.g. oversupply with potassium vs. magnesium) can cause some nutrient deficiencies.

Specific nutrient demand for tobacco

In order to achieve a high quality of the leaves, most important will be a balanced soil nutrition with nitrogen, phosphorus and potassium. The additional foliar fertilization with manganese can help to overcome manganese deficiency in case of a high pH-value of the soil.

Root growth and early plant growth 

The amino acids in Aminosol® are stimulating the root growth because of physiological effects. Aminosol® will enhance the growth in general of young plants. We recommend to dip the plant trays directly in an Aminosol® solution or to apply Aminosol® after the planting (“watering”)

Resistance and vitality

The application with phosphonates - Lebosol®-Kalium-Plus or Lebosol®-Magnesium-Plus - can help to keep plants healthy and strengthen the vitality. The plants are more robust and less susceptible for diseases, e.g. Peronospora tabacina (enhanced formation of phytoalexins, cell wall thickness and enzyme synthesis). Several treatments with Lebosol®-Kalium-Plus or Lebosol®-Magnesium-Plus will enhance plants health and quality.

Leaf quality and -colour with manganese and magnesium

A foliar fertilization with Lebosol®-Mangan GOLD SC can be required by high pH-values (pH >6.5) and visible symptoms of the younger leaves (chloroses).

Especially on sandy light soils or soils with high potassium content and under difficult weather condition (cold and wet) a magnesium deficiency can occur. This will be visible with yellow and brown leaves which later die back. The foliar application with Lebosol®-Magnesium 400 SC can help to optimize nutrition with magnesium.

 The product Lebosol®-MagSOFT SC is containing additional sulphur and can be used for the application of magnesium and sulphur in one formulation. Magnesium will enhance quality of the tabacco, sulphur will optimize utilization of nitrogen in the plant.

Smoke qualities

 Potassium is essential for the “glowing” quality of the tobacco, phosphorus is influencing cell structure and leaf maturity.

Under certain weather conditions, potassium can be shifted into the soil and deficiency symptoms, e.g. necrosis on the leaves and leaf edges, can occur.

Cold and wet weather situations in spring combined with a less developed root system can lead to a phosphorus deficiency. Visisble symptoms will be the red colouring of the leaves.

The application of the chloride-free solution Lebosol®-PK-Max (combination of phosphorus and potassium) will ensure best nutrion and quality of the tobacco.

Aminosol® - to prevent damage by hair game

Aminosol® can be applied to prevent browsing damage by game. Aminosol® is produced from animal protein from food production. This protein is splited by enzymes into amino acids. This creates the typical Aminosol® smell. Hair game is perceiving this smell intensively and avoiding fields which are treated with the product.

Main recommendations

Aim/Problem Recommendation Time
Improvement in effectiveness and tolerability of soil-applied herbicides 0,2 - 0,6 l/ha Herbosol® (Increase to 0.6 l/ha on light soils with a low humus content; reduce to 0.2 l/ha for heavy soils with a high humus content.) With soil-applied herbicides
Improvement in effectiveness and tolerability of plant protection products 150 - 300 ml Aminosol® (per 100 l spray water) With plant protection products
To cover periods with poor growth conditions 4 - 6 l/ha Lebosol®-Total Care In the event of stress at the site
Root formation, growth, initial development Aminosol® (Immerse the trays in a solution of 1% or shower floating plants with a 0.3% solution or water with 5 - 10 l/ha) Before new planting
Initial development, vitality, energy and water balance, quality 1 - 3 times 5 - 10 l/ha Lebosol®-Kalium 450or1 - 3 times 6 - 8 l/ha Lebosol®-PK-Max From 4-leaf stage
Vitalisation, improvement in the photosynthesis rate and resilience 2 - 4 times 4 - 6 l/ha VITALoSol® GOLD SC From 4-leaf stage
Improvement in leaf quality, chlorophyll, vitality, photosynthesis rate 2 - 3 times 3 - 5 l/ha Lebosol®-MagSOFT SC From 4-leaf stage
Improvement in leaf quality, photosynthesis rate, N efficiency 1 - 3 times 1 l/ha Lebosol®-Mangan GOLD SC +
1 - 3 times 1 l/ha Lebosol®-AqueBor SC
From 4-leaf stage
Treated crops are avoided by furred game 2 l Aminosol® (with 2 l water 2 - 3 days beforehand, quantity for 1 ha) When required
Boosting of resistance to illness 2 - 5 times 2 - 3 l/ha Lebosol®-Kalium-Plus When required