Clomazone is a popular herbicide used to control grasses and broadleaf weeds in major crops such as rice, soybean, oilseed rape, cotton, sugarcane and maize.
Originally developed by FMC in 1986 as a pre-plant incorporated (PPI) or pre-emergence herbicide, Clomazone has since become one of the most effective weed controls on the market.
Registered for use in over 40 countries worldwide and with global sales of $249m and $247m in 2020 and 2021 respectively, it comes as no surprise that Clomazone remains popular among both agricultural and non-agricultural users alike.
Its effectiveness when applied to young actively growing plants, as well as its ability to be combined with other herbicides such as metolachlor makes it an ideal choice for weed control solutions.
Graph 1: The global sales of clomazone by 2021
Identification of Clomazone
Clomazone is a herbicide of the chloroacetanilide class. It is used to control annual grasses and broadleaf weeds in a variety of crops. Clomazone is often used in combination with other herbicides to improve efficacy. The mechanism of action of clomazone is not fully understood, but it is believed to work by inhibiting photosynthesis.
Clomazone is a white to off-white solid with a melting point of 122-124℃. It is insoluble in water but soluble in most organic solvents.
Clomazone is commercially available as a emulsifiable concentrate (EC), wettable powder (WP), aqueous capsule suspension (CS).
Main identification information as follows:
♦ Common name: clomazone
♦ IUPAC name:
♦ Chemical Abstracts name:
♦ CAS RN: [81777-89-1]
Usage Methods for Clomazone
Clomazone is available in a variety of formulations, including liquids, Granules, and tablets. It can be applied using a variety of methods, including broadcast spraying, spot spraying, and soil incorporation.
The choice of formulation and application method depends on various factors such as the type of crop, the stage of crop growth, target pests, environmental conditions, and equipment availability.
Liquid formulations of clomazone are mixed with water and sprayed onto crops using backpack sprayers, boom sprayers, or air-assisted sprayers. They are used for pre-emergence or early post-emergence weed control in various crops such as soybeans, cotton, peanuts, potatoes, corn, rice, and vegetables.
Granular formulations of clomazone are applied to the soil using mechanical seed planters or granular applicators. They are used for pre-emergence weed control in crops such as soybeans, cotton, and peanuts.
Tablet formulations of clomazone are inserted into the soil using specialized equipment, such as a cone seeder or tube seeder. They are used for pre-emergence weed control in row crops such as corn, soybeans, and cotton.
Soil incorporation of clomazone involves mixing the herbicide into the soil before planting seeds. This method ensures that the herbicide is in direct contact with the weed seeds or seedlings, resulting in better weed control. Soil incorporation can be achieved using tillage equipment such as plows, disks, or cultivators.
It has a good control effect on broad-leaved and grass weeds, such as Digitaria sanguinalis, Eleusine indica, Commenlina benghalensis, Portulaca oleracea, Echinochloa crus-galli, bermudagrass, etc.
The application in detail is showed as below:
|Main Rice Herbicides: Weed Control and Timing|
At the one and half leaves stage of Echinochloa crus-galli, Clomazone 48% EC with a dosage of 375-450 ml per hectare should be applied to paddy fields by means of any suitable medium to high volume applicator. Weeding is recommended within three to five days after transplanting. This herbicide is effective against a broad range of weeds and safe for use on rice crops.
|Main Soybean Herbicides: Weed Control and Timing|
During the pre-plant or pre-emergence period, Clomazone 48% EC with a dosage of 1-1.2kg a.i. per hectare should be applied to soybean by means of any suitable medium to high volume applicator.
Furthermore, it could also be mixed with acetochlor 50% EC (1.5L per hectare) or Metribuzin 70% WP (450g per hectare) at the dosage of 0.75-1L per hectare for soybean weed control.
It should be noted that suitable soil moisture is good for the absorption of pesticides. It could be mixed with soil at the shallow depth in the dry conditions.
|Main Sugarcane Herbicides: Weed Control and Timing|
During the pre-emergence period of sugarcane after planting, Clomazone 48% EC with a dosage of 1-1L per hectare should be applied to control weed such as bermudagrass. It is efficient and has a lower cost.
A temporal whitening of the sugarcane foliage might occur when clomazone is applied in post-emergence, but this symptom will disappear 30 and 60 days after the application and does not reflect on crop productivity.
To Sum up
Clomazone is a high efficiency grass and weed killer.
We have product lines caring an annual production capacity of 4000 tons of Clomazone technical. We can also provide various types of Clomazone formulations.
If you’re looking for the best Clomazone products or any other agrochemical needs, Heben is a good choice. Give us a call at (86) 0577 55882935 or email us at firstname.lastname@example.org!