What is the recommended dose of Metribuzin 70%?

Metribuzin 70% is a popular herbicide used by many farmers in India for controlling both grassy and broadleaf weeds. It is mainly used in crops like potato, tomato, soybean, and sometimes in wheat depending on the variety. Farmers prefer it because it works well on young weeds and keeps the field clean during the early growth stage of the crop. To get the best results and avoid crop damage, it is important to use the correct dose and follow proper spraying practices. Understanding the recommended dose helps farmers save money, protect the crop, and achieve better yield.
The recommended dose of Metribuzin 70% varies depending on the crop, soil type, and stage of application. Generally, the standard dose is 200 to 300 grams per acre when used as a pre-emergence or early post-emergence herbicide. For most situations, 250 grams per acre is considered safe and effective. Farmers should always use clean water for mixing and ensure proper agitation in the spray tank so that the chemical dissolves evenly.
In potato cultivation, Metribuzin 70% is widely used and works very well when applied after planting and before the crop emerges. Most farmers use 200–250 grams per acre as a pre-emergence spray. The soil should have enough moisture, as the herbicide activates better in moist conditions. In sandy soils or soils low in organic matter, the dose should be kept on the lower side to avoid crop injury.
For tomato and soybean, the recommended dose is similar, usually 200–250 grams per acre, applied either before crop emergence or when weeds are still at the early growth stage. Metribuzin is more effective on small, tender weeds rather than mature weeds. Farmers should avoid spraying on very hot days or when the crop leaves are wet, as this increases the risk of leaf burn.
Wheat farmers sometimes use Metribuzin 70% as an early post-emergence herbicide. However, it is not suitable for all wheat varieties. Some wheat varieties are sensitive and may show yellowing or burning symptoms. For wheat, if used, the dose is generally 100–150 grams per acre, depending on variety tolerance. Farmers should check local variety recommendations before using Metribuzin in wheat.
While using Metribuzin, water volume is important. Spraying should be done with 150–200 litres of water per acre for uniform coverage. A flat-fan or flood-jet nozzle gives better distribution compared to a hollow-cone nozzle. Spraying should be done in calm weather so that the herbicide does not drift to neighbouring crops.
Farmers must avoid mixing Metribuzin with fertilizers like urea during spraying, as this can reduce effectiveness and increase the risk of crop injury. It is also important to avoid using Metribuzin in fields where soil erosion, waterlogging, or heavy rainfall is expected soon after spraying.
In simple words, the safe and effective dose of Metribuzin 70% for most crops is 200–300 grams per acre, with 250 grams being the common choice. By using the correct dose, proper water volume, and spraying at the right stage, farmers can control weeds successfully without harming the crop and enjoy better field growth and higher productivity.