What causes yellowing leaves in cucumber seedlings?

Cucumber is a plant eaten every day, and during the growing process, leaves often turn yellow due to poor care. What causes yellowing leaves in cucumber seedlings?

1. What causes yellowing leaves in cucumber seedlings

The causes of yellowing leaves in cucumber seedlings include severe water shortage or overwatering, low growing temperature, improper fertilisation, soil compaction or salinisation, lack of trace elements, and damage from pests and diseases.

2. How to solve yellowing leaves in cucumber seedlings

1. Water in a timely and moderate way; do not let the plants become waterlogged or too dry.

2. Cucumber likes warmth and cannot tolerate cold. The suitable growing temperature is 25-30°C during the day and 15-18°C at night. Low temperatures during the seedling stage will affect root growth, which in turn causes the leaves to turn yellow, so the temperature of the seedbed should be raised.

3. Too much fertiliser supply will cause yellow leaves; at this point, water to dilute it. Use seedling fertiliser during the seedling stage, and top-dress only once or twice.

4. Soil compaction, salinisation and acidification or alkalisation will also affect the root system and cause the leaves to turn yellow. At this point, loosen the soil in time and apply some soil-improving organic fertiliser or other fertiliser. For growing cucumbers, it is best to choose fertile soil rich in organic matter, with a pH value of 6.5 being the best.

5. Trace elements such as iron, zinc and boron are very important for the growth and development of cucumber, and a deficiency will cause the leaves to turn yellow. At this point, supplement nutrients for top-dressing.

6. When cucumbers are damaged by pests and diseases, the leaves will show yellow-green mottling. In this case, we should choose appropriate agents for control, and when spraying foliar fertiliser at ordinary times, a fungicide can be appropriately added.

When growing cucumbers, observe carefully. After finding yellowing leaves on cucumber seedlings, combine this with the situation at the time, analyse the causes and effects, and then take corresponding effective measures.