Технологическая карта выращивания amika lettuce в гидропонике

1. Seed sowing and germination

Длительность этапа:3 дня

* Preparation of substrate. The substrate for cultivation can be different – organic (peat, coconut) or inert (mineral wool, expanded clay, perlite). Example of substrate: a mixture of 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 the cups.
* Preparation of cups. Before filling, cups are placed in special reusable plastic cassettes (previously cleaned and disinfected). Then, substrate is poured onto the cassette and evenly distributed across the cassette surface in circular motions. D6 cups should be filled with substrate level with the edge, while the substrate should not be compacted. The weight of a standard lettuce cup with properly prepared and laid substrate is 38-42 g.
* Sowing. Sow 3 seeds (2 seeds from June to August) in each cup to a depth of no more than 0.5 cm.
* Watering and covering. After sowing, the cassettes 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:14 дней

* Transferring seedlings to the seedling department.
* Lighting. After placing in the seedling department, the seedlings are supplemented with light. The lighting power is 100-120 W/m².
* Treatment with bioinsecticides. Seedlings in the 2 true leaf stage are treated with bioinsecticides to prevent aphid occurrence.
* Watering. Watering is done daily with nutrient solution.

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3. Transplanting to a permanent location and caring for plants

Длительность этапа:30 дней

* Installing in a permanent location. When the seedlings form 2-4 leaves and some roots emerge through the holes in the pot, place them in hydroponic modules. Ensure that the roots reach the film of nutrient solution. A mandatory condition when placing seedlings in modules with the flooding method is to water them in the seedling department and only then place them.
* Watering. The nutrient solution is changed every 2-3 weeks. The electrical conductivity of the solution in 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 lighting and temperature.
* Treatment with biofungicides. To protect plants from powdery mildew and other leaf infections, it is recommended to carry out 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 insert cassettes and packaged in individual bags.

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5. Preparing the greenhouse for the new cycle

Длительность этапа:14 дней

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

6. Storage after harvest

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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