HYDROPONICS AS AN ALTERNATIVE TO GROWING PLANTING MATERIAL

Hydroponics is a modern way of growing plants in special solutions. Using this method, plants dispense with soil, are in the substrate, which serves as a support for the root system and receive the necessary nutrients from the solution. It for each plant, depending on the species, is selected individually. The hydroponic method is of two types: open systems and closed. Most industrial plants are simple open systems. Plants are grown on a mineral wool slab; the nutrient solution circulates several times a day, according to the ambient temperature, and then after each watering 25-30% of the nutrient solution is discharged into the ground. This is to prevent the deposition of salts on the substrate.There are also closed systems where the nutrient solution circulates from the tank to the plants and back to the tank. In this case, all the consumed water is absorbed and evaporated by the plant, thereby increasing the efficiency of water consumption. In addition, the nutrient solution does not come into contact with the soil and does not contaminate the soil, and unwanted nutrients do not enter the groundwater. System closure solves the problem of water loss. Peppermint culture was grown using a closed type of hydroponic system. Passiflora seeds were grown using mineral wool.