Mechanism of action
It penetrates plants through aboveground organs, mainly leaves, and moves along the plant towards growing points, that is why MCPA is often referred to as a herbicide of growth-affecting action.
Protective period
The preparation protects plantings from the treatment moment until 2nd
wave of weeds.
Speed of action
First signs of herbicidal effect, such as withering, drying, and twisting of sensitive weeds, appear in 3 to 7 days with their death in two or three weeks after treatment depending on current weather conditions. The fastest herbicidal effect is achieved by treatment at earlier growth stages of annual bilobate seeds and at rosette stage of perennial creeping-rooted weeds, and during favorable weather conditions: optimal humidity and temperature. In arid weather, the herbicidal effect may weaken, as penetration of the active ingredient into the plant becomes slower due to general reduction of assimilate outflow from leaves.
Range of inhibited weeds
Annual dicotyledonous weeds, and harmful and poisonous dicotyledonous weeds.
Sensitive species: ragweed, bluebottle, charlock, tansy mustard, sheep bur, spring groundsel, common orach, copper rose (species), field scorpion grass, dandelion (species), caseweed, hemp nettle (species), wild radish, sandweed, amaranth (species), , day-nettle, dish mustard, clubroot, water plantain.
Moderately sensitive species: Canadian thistle, speedwell (species), vetch, sheepbine, pepper plant (species), common fumitory, velvetleaf, milkweed, sow thistle (species), field chamomile, mayweed, bladder campion.
Feebly sensitive species: satin flower, houndsberry, catch weed, green ginger, green pansy.
Compatibility
To enhance the spectrum of action on bilobate weeds, it is feasible to combine the preparation with sulfonylureas. It may also be combined with insecticides, fungicides and fertilizers provided their application periods coincide. Before use, check for physical and chemical compatibility of preparations to be commingled.
