Promethazine herbicide usage instructions

Promethazine is a triazine systemic herbicide , which is mainly absorbed through the weed roots and can also be absorbed through the stems and leaves, inhibiting the photosynthesis of weeds, causing them to lose green color and die. It can be used to control weeds in orchards, non-arable land, railways, both sides of roads and farmland. So what are the specific instructions for use? Let’s learn more about it below.

What weeds does the promethazine herbicide mainly control?

Promethazine herbicide has the characteristics of high efficiency, broad spectrum and low toxicity. It has good prevention and control effects on a variety of annual and perennial grass weeds, broad-leaved weeds and sedge weeds. It is a highly effective herbicide that can control "grass, broad-leaved weeds and sedge weeds". The targets of prevention and control include foxtail grass, crabgrass, barnyard grass, oatstraw, goosegrass , purslane , duckweed, and cow hair felt.

How to use promethazine herbicide

1. Usage time

Promethazine should be used during the weed seed germination period to achieve the desired effect. For rice fields, it is best to apply the pesticide 5-7 days after transplanting.

2. Usage

The pesticide can be applied by spraying or broadcasting. When spraying, first add a small amount of water to the Procaojing to make it into a paste, and then add water to dilute it. When spreading, mix the agent with fine soil evenly and then spread it.

3. Dosage

(1) Wheat: When wheat seedlings are at the 2-3 leaf stage and weeds are at the 1-2 leaf stage, apply 75-100 g of 50% wettable powder per mu, mixed with 30-50 kg of water, and spray on the stems and leaves.

(2) Peanuts and soybeans: Before sowing or before germination, apply 100-150 g of 50% wettable powder per mu, mixed with 30 kg of water, and spray evenly on the soil surface.

(3) Cotton: Use 100-150 g of 50% wettable powder per mu or mix 100 ml of 48% trifluralin emulsifiable concentrate with 100 g of 50% promethazine wettable powder per mu, and spray evenly on the ground with 30 kg of water.

(4) Garlic, onion, leek and other Allium plants: generally use 100-125g of 50% Promethazine suspension and 30-40kg of water per mu for spraying. When using the medicine, the soil moisture content must be good and the spray must be even. The amount of medicine used should not be increased at will.

(5) Orchards and tea gardens : In the early stage of mass germination of one-year-old weeds, when the soil is moist, use 250-300 g of 50% wettable powder per mu, either alone or mixed with lathol, butachlor, etc., and spray evenly on the soil surface with water.



In general, the herbicide Promethazine has many advantages and a long lasting effect, making it a very practical herbicide in agricultural production. However, when using it, the correct usage and precautions should be followed to ensure that weeds are effectively controlled while reducing the impact on the environment.