What causes honeysuckle leaf drop
Honeysuckle, also called Japanese honeysuckle, is widely used in our daily lives, and its planting area is spread across the whole country. Previously, many honeysuckle growers consulted online, saying that their planted honeysuckle showed abnormal leaf drop. Why is that? Is the honeysuckle sick, or what is causing it? The editor specifically analyzed this issue and gathered the relevant information. If you need it, you can carefully read the content below.
1. Unsuitable soil
When leaf drop occurs in honeysuckle planting, the first thing we should consider is the issue of the planting soil. Although honeysuckle has strong adaptability, that does not mean all soils are suitable for growing honeysuckle. If the planting soil is unsuitable, it will also cause honeysuckle leaf drop. Secondly, there may be no problem with the planting site itself, but later soil loosening, hilling and other work were not done properly, causing changes in soil structure, which will also cause honeysuckle leaf drop. If it is caused by a soil problem, then we need to change the planting site or disinfect and manage the soil before planting again.
2. Improper water and fertilizer management
Improper water and fertilizer management is mainly shown in four aspects: water yellowing, drought yellowing, fertilizer yellowing and starvation yellowing. Water yellowing is caused by excessive watering; drought yellowing is caused by lack of water or failure to water in time when watering is needed; fertilizer yellowing is caused by too much, too frequent or too heavy fertilization, or an improper type of fertilizer; starvation yellowing is caused by insufficient nutrients without timely topdressing, leading to poor growth and development and other problems. So what we need to do is fertilize scientifically according to the fertilizer requirements of honeysuckle, and reasonably use nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, micronutrient fertilizer, foliar fertilizer, as well as organic fertilizer and farmyard manure. After each fertilization, it is best to water once to dilute the concentration and promote nutrient absorption. In hot and dry seasons, water actively, and in the rainy season, drain promptly.
3. Inadequate pest and disease control
Of course, the abnormal leaf drop of honeysuckle may also be caused by pests and diseases. The diseases that cause honeysuckle leaf drop are generally powdery mildew, brown spot and root rot. Powdery mildew and brown spot occur mostly around August each year, so what we need to do is strengthen field management, reasonably adjust branches and leaves, and maintain air circulation between plants. Secondly, in June, chemical prevention can be carried out, and Syngenta's Aimiao 3000-fold solution can be used for prevention. After the disease occurs, triadimefon can be used for control. For root rot, a fungicide mixed with an insecticide can be used for root drenching control. The insect pests that cause honeysuckle leaf drop are generally underground pests, such as white grubs and cutworms, so we can use isofenphos-methyl granules for poisoning and killing.
4. Light conditions
Abnormal leaf drop in honeysuckle may also be caused by light. Honeysuckle is a light-loving plant with a relatively large demand for light. If there is insufficient light, honeysuckle cannot carry out photosynthesis normally, so leaf drop will also occur. When this situation occurs, we need to strengthen the light for honeysuckle, reasonably adjust the sunlight at the planting site so that honeysuckle can carry out photosynthesis normally, or change the planting site to promote the growth of honeysuckle plants.
Generally, when honeysuckle shows abnormal leaf drop, it is basically caused by these reasons. Of course, special situations are not ruled out. If you encounter abnormal leaf drop and cannot solve it using the above methods, you can also consult us.