Red leaf heather in the landscaping because of the new shoots and young leaves bright red and favored, often do hedges, arbors and glasses embellishment, in the spring and summer of each year, red leaf heather often encounters a series of pests and diseases, resulting in a variety of spots on the leaves, yellowing, lack of carving and other problems, the causes and solutions are shared as follows!
1] spots: leaf spot, anthracnose and other leaf diseases often lead to such phenomena, the disease occurs when it leads to a variety of brown or whorle-like spots on the leaves, when severe, the spots can be connected into a block, and even the whole plant dies, generally speaking, in the high temperature and humidity, poor ventilation environmental conditions are more likely to occur, the daily maintenance process needs to pay attention to water and fertilizer management, scientific pruning and other measures to reduce the probability of disease, the early stage of the disease combined with chemical agents (such as Qi Lin Tianjun + plant Da Zhuang) spraying prevention and control!
2] Yellowing: heather is mainly iron deficiency yellowing, manifested as the loss of green between the veins of the upper leaves, generally speaking, the soil is barren and lack of fertilizer, salinity and other phenomena can easily lead to the solidification of iron in the soil, and the plant can not absorb enough iron normally to cause yellowing.
It is difficult for plants to absorb iron, and yellowing is aggravated under low temperature and droughtPlants have poor root systems or are harmed by root diseases and pests, and have limited ability to absorb nutrients;Branches are affected by multiple factors such as borer pests and obstruction of nutrient transmission, which will aggravate the occurrence of the disease
3] Missing carving: This kind of phenomenon is caused by typical leaf-eating pests such as leaf beetles, stinging moths, etc., and often forms different missing carvings, holes and other phenomena during the occurrence period, which generally occur more in the summer and autumn of each year
4] loss of green: green loss and yellowing are different, yellowing is a common occurrence between leaf veins, and green loss is mainly caused by stinging and sucking pests, common stinging and sucking pests on red leaf heather are aphids, scale insects, whiteflies, etc., when occurring can be used Qilin Zhiru, Qifa, Guangzheng and other spraying control!