Thiram was originally widely used in seed treatment to prevent and treat seed-borne and soil-borne diseases such as smut and powdery mildew in wheat crops and anthracnose and damping-off in vegetable crops.
Later, the application of thiram was further expanded. It was not only used for soil treatment and leaf disease control, but also widely used in a variety of crops such as fruit trees, vegetables, grain crops, and oil crops. It is often used in combination with other fungicides and insecticides, and has become an indispensable protective fungicide in agricultural production.
Mechanism of action
Thiram, an organic sulfur protective fungicide, mainly works before pathogens infect crops. Its organic compound properties containing sulfur enable it to form a tough protective film on the surface of crops. This protective film effectively prevents the germination and invasion of pathogen spores, providing an additional line of defense for crops.
When pathogen spores come into contact with the leaves of crops treated with thiram, due to the tight barrier of the agent, the spores have difficulty obtaining the necessary water and nutrients to germinate. At the same time, they cannot penetrate the cuticle of the leaves to enter the plant tissue, thus achieving effective prevention of diseases.
Although thiram performs well in early disease prevention and significantly reduces the incidence of diseases, once the pathogen breaks through this layer of protection and enters the plant body, its subsequent growth and reproduction inhibition effect is relatively limited. This is a common challenge for all protective fungicides.
Product Features
(1) Thiram has a broad-spectrum fungicide property and shows good control effects on a variety of diseases of various crops. For example, it can effectively control wheat fusarium head blight, powdery mildew, potato late blight, and downy mildew, powdery mildew, and anthracnose of various vegetables such as cabbage and melons. At the same time, it also has a significant control effect on tomato late blight, early blight, leaf mold, gray mold of vegetables and strawberries, anthracnose and white rot of grapes, and pear black spot. Its wide range of applications makes thiram an indispensable protective fungicide in agricultural production.
(2) The soil permeability of thiram makes it have a long lasting effect in the soil, so that it can continue to exert its fungicide effect and reduce the number of times the pesticide is applied. In addition, thiram can be used in combination with a variety of other fungicidal ingredients such as sulfur and carbendazim, which not only expands its control spectrum and improves the control effect of diseases, but also improves the safety of crops.
(3) The use of thiram is very flexible. It can be used for seed treatment to prevent and control seedling diseases, and can also be used for soil treatment or spraying to prevent and control aboveground diseases. When treating seeds, it can effectively prevent and control damping-off and sudden wilt of various vegetables, grain crops and oil crops. Soil treatment can protect seedlings such as tobacco and sugar beets from disease invasion. The spray method is mainly used to prevent and control downy mildew, powdery mildew and anthracnose of various crops. In addition, when used in high doses, thiram can also repel birds and mice in the field, thereby reducing damage to crops to a certain extent.
Usage
(1) Seed treatment
For 50% Furam WP, the dosage for seed treatment is as follows:
To prevent and control rice blast, sesame leaf spot, corn smut, sorghum anthracnose, etc., 250 grams are needed for every 100 jin of seeds.
To prevent and control millet smut, soybean damping-off, black spot, sesame stem spot blight, etc., 150 grams are needed for every 100 jin of seeds.
To prevent and control rapeseed damping-off and white spot, 125 grams are needed for every 100 jin of seeds.
To prevent and control peanut crown rot, 100 grams are needed for every 100 jin of seeds.
In addition, 50% Furam WP can be used to soak seeds for 2-3 days at 500-1000 times dilution to prevent and control rice blast, sesame leaf spot, rice seedling damping-off and rice seedling blight.
(2) Soil treatment
For the prevention and control of tobacco root rot, 500 grams of 50% thiram wettable powder is required for every 500 kilograms of hotbed soil. For the prevention and control of vegetable, tobacco and sugar beet seedling diseases, 3750-5625 grams of thiram per hectare of soil is required for treatment, and the method of furrow application or hole application is adopted.
(3) Spray control
Spraying with 500-800 times diluted 50% thiram wettable powder can effectively prevent and control diseases of various crops such as wheat fusarium rust and rapeseed downy mildew. Spraying at the early stage of the disease is more effective.
(4) High-dose repellent effect
High-concentration thiram wettable powder (such as 300 times diluted) can be used to repel birds such as sparrows and protect crops such as wheat and millet that are about to mature. In orchards, cloth strips or straw soaked in the agent can protect the ripening fruits from being eaten by birds such as magpies, and the effect can last for 10-15 days. In addition, applying it to the trunks of young fruit trees such as citrus and peaches can also prevent them from being eaten by hares, mice, etc.
Precautions:
(1) Thiram should not be mixed or used closely with copper, mercury and alkaline pesticides, and should be stored in a cool and dry place.
(2) When used on cucumbers, the safe interval is 15 days and can be used up to 3 times per season; attention should be paid to the problem of fruit rust on pear trees.
(3) Thiram has a certain irritating effect on the skin and mucous membranes, so when using it, be sure to wear protective equipment such as gloves and masks to ensure safety. At the same time, the impact of Thiram on bees is relatively small, but please note that it is toxic to fish. During use, the agent should be avoided from polluting water bodies to protect the ecological environment.
