Causes for the blackening and charred of new banyan leaves. Prevention and control measures for the blackening and charred of new banyan leaves In southern my country, banyan trees are deeply loved for their beautiful tree shape and luxuriant branches. They have become evergreen ornamental plants in many courtyards and parks. Recently, many banyan trees owners have discovered that the newly grown leaves have become blackened and charred, which not only affects the appearance of the banyan tree, but may also seriously affect the growth of the banyan tree. This paper will provide a detailed analysis of the reasons for blackening and scorching new leaves of banyan trees and the prevention and control measures. Reasons why new leaves of banyan trees are blackened and charred 1. Disease infection of new leaves of banyan trees may be caused by infection with pathogenic bacteria. Common pathogens include anthracnose, leaf spot, etc. Under appropriate environmental conditions, these pathogens invade the leaves of banyan trees, causing the leaves to be blackened and scorched.
2. During the growth of malnourished banyan trees, if the soil lacks necessary nutrients, such as nitrogen, phosphorus, potassium, etc., it will also cause new leaves to be black and scorched. Improper or excessive fertilization may also cause leaf problems of the banyan trees.
3. Improper water management Water management is the key to the maintenance of banyan trees. If you water too much or too little, it may cause the new leaves of banyan trees to turn black and scorch. Too much water will cause hypoxia in the roots and affect the absorption of nutrients by the roots; Too little water will cause the leaves to lose water and cause the leaves to turn black.
4. Environmental factors Environmental factors such as high temperature, high humidity, and strong light may also cause the new leaves of banyan trees to be blackened and scorched. In the high temperature season in summer, the leaves of banyan trees are easily exposed to strong light, causing burns to the leaves; while in the low temperature season in winter, the leaves of banyan trees are susceptible to freezing injury. Prevention and control measures for blackening and charred new leaves of banyan trees 1. Strengthen disease prevention and control (1) Remove diseased leaves in time to reduce the transmission routes of pathogenic bacteria;(2) Spray fungicides, such as mancozeb, carbendazim, etc., every 7-10 Days spray, and spray 2-3 times continuously;(3) Pay attention to ventilation and light transmission, reduce humidity, and avoid the breeding of pathogenic bacteria.
2. Optimize fertilization management (1) Reasonably fertilize fertilizer according to the growth needs of banyan trees to maintain balance of soil nutrients;(2) Pay attention to applying organic fertilizers and compound fertilizers when fertilizing to avoid using single fertilizers;(3) Water timely after fertilizing to ensure that the fertilizer is fully dissolved and absorbed by the roots.
3. Strict water management (1) Water reasonably according to the growth habits of banyan trees to avoid too much or too little watering;(2) During the high temperature season in summer, appropriately increase the number of watering times to keep the soil moist;(3) During the low temperature season in winter, reduce the number of watering times to avoid freezing damage.
4. Improve environmental conditions: (1) During the high temperature season in summer, properly cover shade and reduce strong light exposure;(2) During the low temperature season in winter, pay attention to keep warm and avoid freezing damage;(3) Maintain ventilation and light transmission, and reduce humidity.
There are many reasons why new leaves of banyan trees are blackened and scorched, and prevention measures need to be comprehensively applied. By strengthening disease prevention and control, optimizing fertilization management, strict water management and improving environmental conditions, the problem of blackening and scorched new leaves of banyan trees can be effectively solved and the healthy growth of banyan trees can be ensured. In this process, we also need to pay attention to authoritative industry reports, data and third-party comments, in order to better understand banyan tree maintenance knowledge and provide scientific and reasonable maintenance for banyan trees.