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A standard package of liquid fertilizers consists out of 7 or 8 different fertilizers. Our specialist can advise which package is best suitable for your cultivation and soil or substrate. The type of crop and the soil on which it is grown are important factors. The package of Fertigro liquid fertilizers consists of the following solutions:

Fertigro CN	Calcium nitrate
Fertigro AN	Ammonium nitrate
Fertigro KZZ	Kali sulphuricum
Fertigro KFL	Potassium phosphorus hydroxide
Fertigro KL-50	Potassium hydroxide
Fertigro KBL	Potassium carbonate
Fertigro MSN	Magnesium sulphate
Fertigro SZ-38	Nitric acid
Fertigro FZ-59	Phosphoric acid
Fertigro CC	Calcium chloride
Fertigro SiL	Potassium silicate
Fertifosk	Potassium phosphite

The method used to calculate the needed amount of liquid fertilizers is different from the one used for fixed fertilizers. The concentration of different elements in the nutrient solution is taken as a basis for the liquid fertilizers (in mmol per litre).

If a tank contains 1,000 litres in which a 100 times concentrated solution is made, it means the concentration of the elements of the solution must be multiplied 100 x 1,000= 100,000 to calculate the amount needed for the A and B tank. 
Example: 13.5 mmol of nitrate nitrogen (N03-) in the nutrient solution 13.5 x 100 x 1000 = 1.350.000 mmol = 1350 mol nitrate nitrogen in the A and B tank.

In this way, the amount needed can be calculated for each element. An example of a completed calculation scheme can be found below:

Based on the research, the necessary ion ratio is determined within the roots for the plant to take in optimal nutrition. This optimal ion ratio is translated to standard nutrition solutions. These are put together in a way that the average target values are met.

During the growing process, the ratio between nutrition and the roots constantly changes (generally, changes occur faster once the growth systems are closed in comparison to growth systems with free drainage). This is often impossible to predict, because it depends on several factors such as climate, plant stadium and plant burden. Therefore, it’s crucial to regularly check the composition of the nutritional solution in the roots. This might indicate a need for adjustment of the nutritional scheme.

Liquid fertilizers can be divided into neutral, acid and lye. Incorrect mixture of these different products could lead to unintentional contamination. You should always take this into account while mixing. 

Liquid fertilizers can be divided into neutral, acid and lye. Improper mixing of these different products can lead to unintentional contamination. This is something you should always keep in mind while mixing and storing fertilizers. Our specialists have also written an article on how to store fertilizers.

Liquid fertilizers are highly concentrated products. As a result, contact with the skin or eyes can have serious consequences. It is therefore very important that you are aware of the points of attention that apply to working with liquid fertilizers. 

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