What causes stunted cucumber seedlings? Latest prevention measures explained in detail

Many farmers growing cucumbers notice that the seedlings are short and small, with thin, small, yellowing leaves, and few roots when pulled up. What is going on? This is actually a physiological disorder of cucumbers——stunted seedlings. So what causes stunted cucumber seedlings? How can it be prevented? Let's take a look together.

I. Causes of stunted seedlings

1. Soil moisture

Soil that is too wet and has poor permeability will affect the respiration of the underground part of the seedlings and the formation of new roots, thus inhibiting seedling growth; in addition, if the soil is too dry, the soil will not combine well with the seedling roots after transplanting, and new roots will likewise fail to form. When the root-zone soil temperature is below 10 degrees, new roots develop poorly; below 13-14 degrees, the root hairs on lateral roots cannot develop, and absorption capacity is extremely low. In addition, when the pH value is below 4.5 or above 8, root growth and development are also hindered. Also, soil salinization can cause physiological disorders in seedlings, inhibiting root absorption of nutrients and causing stunted seedlings.

2. Unreasonable fertilization

If fertilizer is applied too deep, the roots cannot absorb it in time, but if it is applied too shallow, it cannot fully decompose, and it very easily damages the roots, forming stunted seedlings. When applying base fertilizer, if it has not been fully decomposed, organic fertilizer will release a large amount of heat and harmful gases during decomposition, damaging the roots. During cultivation, applying large amounts of chemical fertilizer and applying organic fertilizer at sowing causes a lack of soil nutrients, forming nutrient-deficiency-type stunted seedlings.

3. Poor seedling quality

During transplanting, seedlings that are too old or too young, as well as root damage during transplanting, can all cause stunted seedlings. Over-hardening the seedlings before planting can cause the stems and leaves to become overly aged, so that after planting they do not grow for a long time and form stunted seedlings.

4. Improper transplanting time

Transplanting at the right time is the key to cultivating strong seedlings. If transplanting is not done at the right time, then improper insulation and moisture retention for the seedlings, as well as improper protection in the early stage after transplanting, can also lead to stunted seedlings. During transplanting, low-temperature chilling injury or sustained high temperatures can also affect the normal growth and development of the seedlings, also resulting in stunted seedlings.

II. Prevention measures

Cultivating seedlings with well-developed roots is the key to cultivating strong seedlings and preventing stunted seedlings. Specifically, this can be done by improving the soil, strengthening nutrient and water management and temperature regulation, as well as moderate hardening of seedlings and timely transplanting, to effectively prevent stunted cucumber seedlings.

  The above is an introduction to the causes of stunted cucumber seedlings and prevention measures. We hope it can help you. If you want to learn more related knowledge, please follow us.