Herbicide Webb is an analogue of Granstar, Granstar About.

Webb

Herbicide Webb is an analogue of Granstar, Granstar About.

Manufacturer Webb - firm best.

Current ingredient -tribenuron-methyl 750 g/kg.

Chemical class - sulfonylureas.

Preparative form is a water - soluble granules.

Culture to apply- winter and spring wheat, winter and spring barley, oats, sunflower seeds (sustainable to tribenuron-methyl 750 g/kg).

Webb - postemergence herbicide of systemic action. Used to control annual and some perennial dicotyledonous weeds in cereal crops. It is also possible to use on the sunflower that is resistant to herbicides on the basis of tribenuron-methyl.

The norm consumption of herbicide Webb

Herbicide Webb applied with a rate of 15-25 g/ha of the drug, the rate of working solution 200-400 l/ha for ground spraying. The wheat used before the advent of flag leaf, on barley - up to exit the tube.

Possible the use of the sunflower that is resistant to herbicides of the group of sulfonyl urea. The application rate of the drug is governed by the firm manufacturer of seeds.

Features applications

Apply as spring and winter crops. Restrictions in the use of varieties no. To most effectively carry out the treatment with herbicide is needed on Webb stage 2-4 leaf annual weeds and at the stage outlet at the long-term. This ways, choosing the timing of spraying, it is necessary to focus on the stage the development of weeds, not crops.

Herbicide Webb may not be used if within 3 hours after the treatment is expected precipitation, and when plants are wet from dew or rain.

Herbicide Webb is not volatile, however, it is important to ensure that during treatment the working the solution is not demolished on adjacent crops.

Also for more effective spraying should pay attention to the density standing of culture and the degree of soiling. If the density of culture and the degree clogging high, use the maximum amount of of the working fluid. If the crops are sparse and there in stock difficult-to-eradicate weeds, and if the weather is hot and dry in this case it is necessary to use a surface-active substance (surfactant). When the wettability of weeds working solution of the drug is improved, which in turn turn affects the enhancement of herbicidal effect.

Oats processed without the addition of surfactants.

Not recommend spraying with the herbicide Webb at temperatures below 12°C and above 25°C and when the humidity is below 50%.

Mechanisms action of the herbicide Webb

· absorbed through the leaves, stems and roots (to a lesser degree) and further easy to move in the weed growth points;

· blocks in sensitive plant enzyme acetolactate synthase, involved in synthesis essential amino acids;

· suppression of the enzyme leads to a rapid arrest of cell division, and then to death plants. Susceptible weeds will stop growing in a few hours after treatment, chlorosis and necrosis appear in a few days, the weeds die within 10-20 days after application. Less sensitive weeds can to survive and stay green, but they are no longer competing with the cultural plants.