HERBICIDE DEFENDA BETAGARD

Mechanism of Action

Well-chosen active ingredients of such herbicide as BETAGARD lead to destructive and irrespective processes in the weed plants: disturbance of photosynthesis, lipid synthesis, protein exchange, growth retardation, and division of cells, preventing the formation of wax plaque. BETAGARD preparation has a combined mechanism of action on weeds - through a leaf apparatus and soil. Fenmedipham and desmedipham are mobile photosynthesis inhibitors - after penetration into leaves they are concentrated in chloroplasts and cause blocking of the photosynthesis apparatus. Ethofumezate (a seedling inhibitor) is absorbed by various parts of plants - dicotyledons absorb a substance by their roots, penetrates in a monocotyledon through coleoptile during germination. Visual signs of the preparation’s action, such as: clarifying the colour of the leaves and, in the future, chlorosis, appear in 2-7 days after treatment with a herbicide. Complete destruction of weeds occurs in 2-3 weeks.

Coverage

Most sensitive weeds:

ragweed, common nipplewort (Lampsana communis), veronica (species), common bugloss (Anchusa officinalis), small-flower galinsoga (Galinsoga parviflora), buckwheat, field mustard (Sinapis arvensis, Brassica arvensis), white deadly, blindweed (Capsella bursa pastoris), thorn apple (Datura stramonium L.), dawny hemp nettle (Galeopsis tetrahit), common groundsel (Senecio vulgaris), chickweed satin flower (common chickweed) (Stellaria media), field daisy (Leucanthemum vulgare), annual nettle (Urtica urens), common Russian thistle (Salsola ruthenica), red chickweed (Anagallis arvensis), common arache (Atriplex patulum), red/field/corn poppy (Papaver rhoeas), field scorpion grass (Myosotis arvensis), black nightshade (Solanum nigrum L.), catchweed bedstraw (Galium aparine), common purslane (Portulaca oleracea), annual snowdrop (Galanthus nivalis L.), wild radish (Raphanus raphanistrum), common fumitory (Fumaria officinalis), field pennycress (Thlaspi arvense), common spurrey (Spergula vulgaris), field violet (Viola arvensis), pigweed (Chenopodium album) and amaranth (various species of both).

Middle-sensitive weeds:

China jute (Abutilon theophrasti), fool's parsley, common chamomile, dog’s field chamomile, rape and sunflower (dead beans of both).

Low--sensitive weeds:

barnyard grass (Echinochloa crusgalli), black foxtail (Alopecurus myosuroides), loose silky bent (Apera spica-venti), bentgrass (Agrostis), green foxtail grass (Setaria viridis), common couch grass (Agropyron repens), hairy crabgrass (Digitaria sanguinalis), green valley grass (Sorghum halepense), scutch grass (Agropyron repens), Aleppo grass (Sorghum halepense).

Preparation Properties

One of the active substances of the preparation - etofumezate - is absorbed by young weeds when they come in contact with an aqueous solution of ethofumezate in the soil. Therefore, the high humidity of the soil contributes to increasing the efficiency of etofumezate, and drought and high content in the soil of organic matter, on the contrary, reduce it.