Here are some general guidelines for growing Romaine lettuce in hydroponics:
- pH: The pH range for growing Romaine lettuce in hydroponics should be between 5.5 and 6.5.
- TDS: The recommended TDS level for Romaine lettuce is between 800 to 1500 ppm.
The following are the general steps for growing Romaine lettuce in hydroponics:
- Seed Germination: Germinate Romaine lettuce seeds in a separate tray or propagator. Once the seedlings have 2-3 leaves, they can be transplanted to the hydroponic system.
- Hydroponic System: There are different types of hydroponic systems that can be used for growing Romaine lettuce, such as deep water culture, nutrient film technique, or drip irrigation. Choose the system that works best for you.
- Nutrient Solution: Use a balanced nutrient solution that contains all the essential nutrients that Romaine lettuce requires, such as nitrogen, phosphorus, potassium, calcium, and magnesium.
- Lighting: Provide sufficient light to the plants, at least 12-14 hours per day. Romaine lettuce can grow under low to moderate light conditions, but it will grow best under bright, direct light.
- Temperature and Humidity: The ideal temperature for growing Romaine lettuce is between 16°C to 21°C, and the relative humidity should be between 50% to 70%.
- Harvesting: Romaine lettuce can be harvested when the leaves are big enough to be picked. It can take around 5 to 7 weeks from seed to harvest, depending on the specific variety and growing conditions.
As for the requirements for each state in India, it is difficult to give a comprehensive answer as the pH and TDS levels can vary depending on the specific variety of Romaine lettuce, the type of hydroponic system, and other environmental factors. However, the guidelines mentioned above are generally applicable across different regions.