What are the control methods for Cladosporium leaf mold on Anthurium?

Cladosporium leaf mold on Anthurium is caused by fungi of the class Deuteromycetes. The pathogen overwinters as mycelium or conidia in diseased parts or on the soil surface along with diseased plant debris. It is a weak parasite, mostly a secondary parasite or saprophyte, and often appears on senescent leaves. It spreads relatively quickly in the later stages of plant growth, producing large spots. In production, the initial amount of inoculum and the temperature and humidity conditions are often the decisive factors for the occurrence of this disease. When the air in the greenhouse is stagnant and humid air lingers for a long time, the disease is severe.

Symptoms: Large gray spots form on the leaf surface, irregular in shape, with distinctly brown edges, spreading along the leaf margin, measuring 13 by 4 cm. The underside of the leaf is grayish brown, and the edge is dark brown, relatively wide, with a slight yellow halo. On it develop dark green mold masses and mold tufts, which are the pathogen's conidiophores and conidia. The disease usually spreads gradually from the lower part of the plant upward, and sometimes causes relatively severe damage.

Control methods: (1) In late autumn and early winter, thoroughly remove fallen diseased leaves and burn them in a centralized manner. (2) During the growing season, pay attention to ventilation and light transmission, and strictly prevent humid air from lingering. (3) In the early stage of the disease, spray 50% Duomeiling wettable powder at 900 times dilution, or 65% Jiameiling wettable powder at 1000 times dilution, or 50% Sumilex wettable powder at 1500 times dilution. When the outbreak is severe, apply continuous control 2 times.

Control methods for Anthurium leaf mold

Anthurium is a flower that many people like. It was once regarded by Europeans and Americans as a symbol of "passion" and "boldness". Anthurium has good growth habits and is easy to cultivate, but if managed improperly, it is prone to diseases. A common disease of Anthurium is leaf mold. How to control Anthurium leaf mold? Today, the editor will discuss it with you.

Anthurium leaf mold is mostly caused by large amounts of diseased plant debris and many diseased leaves in the planting greenhouse, as well as poor ventilation and high humidity, which favor the occurrence of Anthurium leaf mold. This disease causes large spots to form on the leaf surface of Anthurium, and in severe cases causes leaves to wither and die.

I. Symptoms and damage of Anthurium leaf mold control

The spots mostly occur on the leaf margins of Anthurium. The spots are brown and irregular in shape, with a yellow halo around the outside of the spots; in the later stage of the disease, the center of the spot is light brown, and the spot margin is brown. Under humid conditions, dark green mold dots grow on the spots.

II. Disease occurrence characteristics of Anthurium leaf mold control

This disease is a fungal disease caused by Cladosporium cladosporioides (Fres.) de Vries. The pathogen overwinters on diseased leaves and fallen diseased leaves; it spreads through airflow, wind and rain. Large amounts of diseased plant debris and many diseased leaves in the planting greenhouse, as well as poor ventilation and high humidity, favor the occurrence of this disease.

III. Control methods for Anthurium leaf mold

(1) Disease prevention through cultivation techniques: Thoroughly remove diseased plant debris and promptly remove senescent leaves; control temperature and humidity well during the growing season; do not spray water directly onto the plant clump, and to cool down, spray water onto the ground and ventilate frequently.

(2) Chemical control: In the early stage of the disease, spray 50% iprodione wettable powder or 65% Jiameiling wettable powder at 1000 times dilution, or 40% carbendazim thermal fogging agent at 1500 times dilution, or 50% carbendazim · procymidone wettable powder at 1000 times dilution, etc. About once every 10 days.

That is a brief introduction to the control of Anthurium leaf mold. Anthurium likes a humid climate and a warm environment. When cultivated indoors, to prevent leaf mold, the room should be kept cool, with good ventilation, and the soil should not be too poor. At the same time, the temperature for Anthurium should not be too high; the optimum temperature is 18°C---28°C.

Control techniques for Anthurium leaf mold

Large amounts of diseased plant debris and many diseased leaves in the planting greenhouse, as well as poor ventilation and high humidity, favorAnthuriumleaf mold occurrence. Control methods include thoroughly removing diseased plant debris, controlling temperature and humidity well, ventilating frequently, and chemical control. This disease causes large spots to form on the leaf surface, and in severe cases causes leaves to wither and die.

I. Symptoms and damage:

The spots mostly occur on the leaf margins. The spots are brown and irregular in shape, with a yellow halo around the outside of the spots; in the later stage of the disease, the center of the spot is light brown, and the spot margin is brown. Under humid conditions, dark green mold dots grow on the spots.

II. Disease occurrence characteristics:

This disease is a fungal disease caused by Cladosporium cladosporioides (Fres.) de Vries. The pathogen overwinters on diseased leaves and fallen diseased leaves; it spreads through airflow, wind and rain.PlantingLarge amounts of diseased plant debris and many diseased leaves in the greenhouse, as well as poor ventilation and high humidity, favor the occurrence of this disease.

III. Control methods:

(1) Disease prevention through cultivation techniques:Thoroughly remove diseased plant debris and promptly remove senescent leaves; control temperature and humidity well during the growing season; do not spray water directly onto the plant clump, and to cool down, spray water onto the ground and ventilate frequently.

(2) Chemical control:In the early stage of the disease, spray 50% iprodione wettable powder or 65% Jiameiling wettable powder at 1000 times dilution, or 40% carbendazim thermal fogging agent at 1500 times dilution, or 50% carbendazim · procymidone wettable powder at 1000 times dilution, etc. About once every 10 days.