Causes of red rust on Begonia japonica leaves. Symptoms of red rust on Begonia japonica leaves. Prevention and control methods of red rust on Begonia japonica leaves. As a frequent visitor to spring flower beds, Begonia japonica has won many gardening enthusiasts with its gorgeous flowers and elegant attitude. Love. During the maintenance process, the problem of red rust on Begonia japonica leaves often troubles flower friends. This article will introduce in detail the causes, symptoms and effective prevention and control methods of red rust on Begonia japonica leaves. Help flower friends maintain the health of flower lovers. Causes of red rust on Begonia japonica leaves, also known as Begonia japonica rust, is a disease caused by fungi. The main causes include the following: 1. Climate factors: Warm and humid climate conditions are conducive to the reproduction and spread of rust.
2. Improper cultivation management: Such as excessive fertilization, improper watering, and untimely pruning, will reduce the disease resistance of the plant.
3. Source of the pathogen: The fungus mainly comes from diseased bodies, pathogenic bacteria in the soil, and the carriage-bearing leaves of adjacent strains. Symptoms of red rust on Begonia pensi leaves The symptoms of red rust on Begonia pensi leaves are mainly manifested as follows: 1. Red or orange-red spots appear at the beginning of the leaves, and gradually expand into round or irregular spots.
2. The edges of the disease spot are obvious, the center is dark, and there are powdery substances on the surface, namely rust spore piles.
3. When the condition is severe, the disease spots will be contiguous, the leaves will turn yellow, and even the entire plant will die. Prevention and control methods for red rust of Begonia penicola leaves are aimed at red rust of Begonia penicola leaves. The following are some effective prevention and control methods: 1. Clean the horticultural environment: Remove sick bodies in time and reduce the source of bacteria.
2. Strengthen cultivation management: Reasonably fertilize and water, maintain good soil drainage, and enhance the disease resistance of plants.
3. Trim diseased branches: Cut off diseased branches when found in time and burn them or bury them deeply.
4. Chemical control: In the early stage of the disease, 25% Feifening EC 800-1000 times solution, 50% Daimanil 500 times solution and other pesticides can be used for spray control, and sprayed every 7-10 days for 2-3 times in a row.
The red rust on the leaves of Begonia japonica is an important factor affecting plant health. Understanding its causes, symptoms and control methods will help flower lovers better maintain their love of flowers. In actual operation, comprehensive prevention and control should be carried out based on specific conditions. To ensure the healthy growth of Begonia japonica japonica.
References: [1] Zhang Lihua, Wang Lili. Occurrence and control of Malus chinensis rust [J]. Plant Protection, 2018, 44 (2): 1-3.
[2]Li Xiaofeng, Liu Xiaohui, Zhao Yu. Occurrence regularity and control measures of Malus chinensis rust [J]. Plant Protection, 2017, 43 (1): 1-3.