Технологическая карта выращивания lettuce jagger в гидропонике

1. Seed sowing and germination

Длительность этапа:3 дня

* Preparing the substrate. The substrate for cultivation can be different - organic (peat, coconut) or inert (mineral wool, expanded clay, perlite). Example substrate: a mixture of sod peat (5-15 mm) and agroperlite in a ratio of 4:1. The optimal pH level for peat substrate is 5.8-6.2, EC 1.2 mS/cm.
* Treatment with biofungicides. Treat the substrate before filling cups.
* Preparing cups. Before filling, cups are placed in special reusable plastic trays (previously cleaned and disinfected). After that, the substrate is sprinkled over the tray and distributed over the entire surface with circular motions. The weight of a standard lettuce cup with properly prepared and laid substrate is 38-42 g.
* Sowing. Sow 3 seeds per cup (2 seeds in June-August) to a depth of no more than 0.5 cm.
* Watering and covering. After sowing, the trays are watered (the pot should weigh 48-50 g) and covered with non-woven material or placed in a germination chamber.

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2. Seedling care

Длительность этапа:12 дней

* Transferring seedlings to the seedling section.
* Lighting. After arranging in the seedling section, the seedlings start supplementing with lights. The lighting capacity is 100-120 W/m².
* Treatment with bioinsecticides. Seedlings at the stage of 2 true leaves are treated with bioinsecticides to prevent aphid occurrence.
* Watering. Watering and fertilizing plants are carried out mechanically or manually. Water three times a week with clean water and 2-3 times carry out fertilization with a standard solution.

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3. Transplanting to a permanent place and plant care

Длительность этапа:25 дней

* Installation in a permanent place. When the seedlings form 2-4 leaves and individual roots come out through the planting slots in the cup, they are placed in hydroponic modules. Make sure the roots reach the surface of the nutrient solution. A prerequisite when placing seedlings in modules using the sub-irrigation method is to water them in the seedling section first and only then to exhibit them.
* Watering. The nutrient solution is changed every 2-3 weeks. The electrical conductivity of the solution during the autumn-winter period should be 2.0-2.2 mS/cm, in the spring-summer period - 1.5-1.7 mS/cm depending on the lighting and temperature.
* Treatment with biofungicides. To protect the plants from powdery mildew and other leaf infections, it is recommended to conduct preventive spraying.

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4. Harvesting

Длительность этапа:3 дня

* Harvesting. Lettuce is harvested when the leaves are fully formed and have reached commercial appearance. Plants with pots are removed from cultivation channels or cassette inserts and packed in individual bags.

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5. Preparing the greenhouse for a new cycle

Длительность этапа:14 дней

* Cleaning the system. Remove remnants of the previous substrate, roots, plants, and other organic materials.
* Disinfection. Fill the system with a solution of hydrogen peroxide (3%) and leave for 1-2 hours. After disinfection, rinse the system three times with clean water to remove residues of disinfectants. Cassette trays intended for reuse need to be washed and disinfected in a solution of hydrogen peroxide.
* Check and adjust the heating and ventilation system.
* Check and maintain the lighting system.

6. Storage after harvesting

Длительность этапа:10 дней

Products are stored at a temperature of 0-2°C and relative humidity of 90-95% for up to 10 days; at a temperature of 4-5°C and relative humidity of 90-95% for no more than 5 days.

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