What to Do When Dragon Fruit Branches Turn Yellow? Cause Analysis and Remedial Measures
Dragon fruit branches can directly reflect the growth condition of the dragon fruit plant, and sturdy, lush green branches are what every dragon fruit grower hopes to see. However, some growers often encounter the phenomenon of branches suddenly turning yellow during cultivation. So what causes dragon fruit branches to turn yellow? Let's take a look.
1. Root rot
Yellowing of dragon fruit branches is very likely caused by root rot. The causes of root rot are: first, overwatering, which prevents the roots from absorbing nutrients and causes suffocation and root rot; second, root diseases. When root diseases occur, the dragon fruit's absorption of nutrients and water drops sharply, and the branches will also show yellowing or symptoms of water deficiency due to lack of nutrients, appearing shriveled and wilted.
Remedial measures: For root rot caused by watering, pay attention to the amount and frequency of watering afterward. For root diseases, copper hydroxide, thiophanate-methyl, and propiconazole EC can be used alternately for spray control, spraying once every half month until normal growth resumes.
2. Water deficiency
The dragon fruit root system is relatively shallow and dislikes waterlogging, but it likes fertilizer and water. Therefore, sufficient water should be provided throughout the entire growth period of dragon fruit. If the soil is dry for a long time or not watered, the moisture lost through plant transpiration cannot be maintained, and over time, branches will turn yellow and become shriveled and wilted.
Remedial measures: Water regularly to keep the soil moist, but avoid waterlogging. When there is no rainfall for a long time, appropriately increase the frequency of watering, especially in high-temperature seasons when plant transpiration consumes more water, so timely replenishment is needed.
3. Iron deficiency
Although dragon fruit plants have a relatively low demand for trace elements, none of them are dispensable. Once the plant lacks iron, yellowing of the leaf surface will occur.
Remedial measures: For affected plants, spray a low-concentration ferrous sulfate solution before sprouting, or a mixture of copper sulfate, ferrous sulfate, and lime. This can effectively control iron deficiency.
4. Improper fertilization
Excessive topdressing or the use of raw fertilizer that has not been fully fermented and decomposed can burn the dragon fruit root system, affecting the roots' absorption of nutrients and causing branches to turn yellow. In addition, insufficient fertilizer use cannot timely supply what the plant needs for growth, especially when the fruit load is large. During cultivation, the phenomenon of fruit-bearing or branches suddenly turning yellow is often seen because fruit growth and branches compete for nutrients.
Remedial measures: Fertilization must be carried out according to the actual condition of the plant. If there is too much, reduce it; if there is too little, replenish it in time. At the same time, note that only fully decomposed organic fertilizer can be applied.
The above is an introduction to the causes and remedial measures for yellowing dragon fruit branches. We hope it can help you. For more related knowledge, please stay tuned to us.