Detailed Explanation of Hydroponic Methods and Care Management Key Points for Calla Lily
1. Hydroponic varieties
Hydroponic calla lilies usually use the relatively short and compact white-stem type, red-flowered calla lily, and silver-flowered calla lily.
Calla lily: calla lily bonsai care management
2. Hydroponic solution
The hydroponic nutrient solution for calla lily can use the following nutrient solution formula: calcium nitrate 800g, monopotassium phosphate 210g, magnesium sulfate 250g, potassium nitrate 500g, ammonium nitrate 30g, ethylenediaminetetraacetic acid iron salt 10g, manganese sulfate 2g, zinc sulfate 1g, boric acid 1.3g, copper sulfate 0.15g, ammonium molybdate 0.1g. In the early growth stage of calla lily, the nutrient solution concentration can be controlled at 1.2 ms/cm; in the middle and late growth stages, it can be appropriately increased to 1.5 ms/cm. Throughout the entire growth period, control the pH value of the nutrient solution between 5.6-6.5. The amount of nutrient solution supplied mainly depends on the weather conditions and the size of the plant. Usually, supply the solution 2-3 times a day to ensure that the cultivation substrate layer is moist and there is a shallow water layer at the bottom of the trough.
3. Hydroponic management and pest and disease control
Calla lily plant management is relatively simple, mainly removing yellow leaves and some outer leaves. The purpose of removing outer leaves is to avoid crowding of leaves affecting light and ventilation, and to allow the flower stalks to extend out. The main pests and diseases of calla lily include bacterial soft rot, aphids, red spiders, etc. Bacterial soft rot can damage leaves, petioles, and tubers, and is mainly spread by bacteria carried on tubers. At the initial stage of the disease, Bordeaux mixture can be sprayed at 500 times dilution for control.
4. Key points of hydroponics
Hydroponic calla lily is essentially oxygen-deficient cultivation, so zero pollution must be achieved. This is because if the nutrient solution is contaminated by organic matter, under the action of microorganisms, oxidizing these organic pollutants requires consuming dissolved oxygen in the water. When the pollution is relatively serious and oxidation proceeds quickly, while the nutrient solution cannot absorb enough oxygen from the air to replenish the oxygen consumed, the dissolved oxygen in the water will gradually decrease, and may even approach zero. At this time, anaerobic bacteria multiply and become active, causing the organic pollutants in the water to undergo anaerobic putrefactive decomposition. This decomposition produces harmful gases such as hydrogen sulfide and ammonia and gives off a foul odor. Therefore, always maintaining the nutrient solution in a clean state and inorganic in nature, so as to maintain the necessary dissolved oxygen level in the solution, is the key to hydroponic calla lily.
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