Reasons for yellowing of hydroponic green leaves
Environmental Mutual
Generally, the newly purchased green radish has a adaptation period of about 1 month to the new environment. The bottom yellow leaves are normal, but remember: yellow leaves or dead leaves should not be directly peeled off. Cut off from the middle of the petiole to avoid excessive water loss caused by direct peeling. And increase the wound; thus causing the upper leaves to yellow.
Light temperature is not suitable for
It has a high temperature, wet and semi-yin environment, and it is not resistant to cold. The winter temperature is not lower than 10 °C. It is sensitive to temperature reaction, avoid direct sunlight in summer, and it is easy to fall off the leaves under strong light. In winter, it grows well under bright scattered light indoors, and requires high moisture during growth.
Poor water quality
Hydroponic green radish may also be due to bacteria in the water. If it is tap water, it may be due to the high content of bleaching powder in the water. Green radish itself is not resistant to low temperature. If it is cold for a long time and the water is large, it will lead to rotten roots, resulting in insufficient water supply to the roots. Finally, the root leaves begin to yellow and the top leaves lose their luster.
Hydroponics green radish leaves yellow solution
Sunshine
It should be placed where the scattered light is sufficient, and water is often sprayed onto the foliage during growth. Spray 0.2% potassium dihydrogen phosphate to restore the fringe of the leaves. Use a larger (surface) culture vessel whenever possible, and oxygenate the water if available.
Fertilizer
Spraying 1% of urea is also possible. Any creature has a life cycle. It may still be aging. Everything goes with the flow. Only when he is yellow, will he send new leaves. There is no need to worry.
Diligently change water
Then, the water is changed once a week in hydroponics. If there are conditions to put some stone or small stones, it will effectively reduce the yellow leaf phenomenon. When changing the water, the roots are well washed and the roots of the lesions are cut off. Don't put too much water, no roots. When cultivating water, it is recommended to wrap the roots of the green radish with the soil and the sawdust together in the water.
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