What to do when winter melon does not grow new roots? Causes and control measures
Winter melon is not only eaten as a vegetable, but can also be made into many candies and snacks, the most common of which is winter melon candy. Moreover, winter melon has strong adaptability, so it is grown in all major regions of our country. During the process of growing winter melon, the situation of not growing new roots often occurs, which makes many growers worry themselves sick. So what causes winter melon not to grow new roots? Are there control measures? Let's take a look together with Qinong Web.
1. Temperature too low
Although winter melon has the word "winter" in its name, it is not a vegetable planted in winter. It is actually a warmth-loving, heat-tolerant vegetable that grows well under high temperatures, while in low-temperature and insufficient-light environments it is prone to freezing and poor growth. The suitable growth temperature is 25-30 degrees. If the growth temperature is lower than 12 degrees, then its root differentiation will be seriously affected, emergence will be difficult, and it will not grow new roots. If it is in a low-temperature environment for a long time, it may lead to seedling death.
Control measures: When the temperature is relatively low, the temperature needs to be raised, the duration of light should be increased, and root differentiation and growth should be promoted. If there is cloudy and rainy weather, artificial heating and supplementary lighting can be carried out.
2. Improper fertilization
When fertilizing, applying undecomposed fertilizer releases a large amount of heat during the fertilizer decomposition process, causing seedling root burn and seedling burn. When fertilizing, applying a large amount of chemical fertilizer will increase soil concentration, causing a large amount of water loss from the winter melon root system and resulting in no new root growth.
Control measures: When fertilizing, pay attention to whether the fertilizer is fully decomposed. When fertilizing, it should not be too close to the root system. For fertilization, apply organic fertilizer and farmyard manure as much as possible, and apply less chemical fertilizer. After fertilizing, water in time to reduce concentration.
3. Improper watering
Winter melon likes a moist environment, but it fears waterlogging. If too much water is applied during planting or if there is long-term cloudy and rainy weather, the soil will absorb too much water, making the soil more clayey and causing compaction, resulting in poor permeability, affecting the respiration of the winter melon root system, hindering the root system's absorption of nutrients, affecting normal root growth, and causing the phenomenon of not growing new roots.
Control measures: Water frequently and in small amounts. Each watering should not be too much. During cloudy and rainy weather, drain water in time. Carry out regular intertillage to loosen the soil and enhance permeability.
4. Pests and diseases
Winter melon root-knot nematode disease is also a cause of not growing new roots. After the root system is infested by root-knot nematodes, they bite through the root tissue and secrete saliva that chemically reacts with the root tissue, causing the root system to form nodular root galls, making the root system unable to absorb water and nutrients and affecting normal growth.
Control measures: Before sowing, disinfect the seeds and soil, remove diseased and residual roots in time, and when the disease occurs, use chemicals to drench the roots and kill the root-knot nematodes.
The above are the causes of winter melon not growing new roots and the control measures brought to you by Qinong Web. We hope it can help you after reading it. For more agricultural knowledge, please pay attention to Qinong Web.