Common name: diuron
Cas no. 330-54-1
Molecular formula: c9h10cl2n2o
Activity: herbicide
Ingredient: 97% tc
Formulation: 80% wp/wdg/sc
Application:
Systemic herbicide, absorbed principally by the roots, with translocation acropetally in the xylem.
Diuron is a substituted urea herbicide used to control a wide variety of annual and perennial broadleaf and grassy weeds. It is used to control weeds and mosses on non-crop areas and among many agricultural crops such as fruit, cotton, sugar cane and legumes. Diuron works by inhibiting photosynthesis.
Tribenuron-methy - voltage
Cas no.101200-48-0
Molecular formula: c15h17n5o6s
Ai content: 95% tc
Formulation type: 10%wp, 20%sp, 75% wdg, 75%df
Application:
Selective, post emergence herbicide, acting primarily through foliar uptake, with little or no soil activity.
It is rapidly absorbed by the foliage and roots and translocated throuhgout the plant. Susceptible plants cease growth almost immediately after post-emergence treatment and are killed within 7 â?? 21 days.
It is used to control of broad-leaved weeds in cereal crops, including wheat, barley, oats, rye and triticale, at 7.5-30 g/ha.
Paraquat - weedfast
Common name: paraquat
Cas no.: 1910-42-5
Molecular formula: c12h14n2.2cl
Activity: herbicide
Ingredient: 42% tc
Formulation: 20% sl
Mode of action:
Non-selective and quick-acting herbicide which kills a wide range of annual grasses and broad-leaved weeds and the tops of established perennial weeds.
It is redistributed within the plant, but does not harm mature bark. It becomes biologically inactive upon contact with soil.
It is also used as a defoliant on crops, like cotton, prior to harvest.
Nicosulfuron
Common name: nicosulfuron
Cas no. 111991-09-4
Molecular formula: c15h18n6o6s
Activity: herbicide
Ingredient: 95% tc
Formulation: 4% sc, 75% wdg
Application:
Nicosulfuron
Selective post-emergence control in maize of annual grass weeds, broad-leaved weeds and perennials grass weeds.
Nicosulfuron is absorbed by the leaves of treated plants and translocated to the meristematic tissue causing growth inhibition, discoloration, necrosis and, eventually, plant death. The product is most effective against grasses when applied between emergence and tillering.
Broadleaf weeds are most effectively controlled when treated at the 2-3-leaf stage. Split applications can improve the efficacy of the product. Nicosulfuron is rainfast within six hours. Dupont recommends the use of adjuvants such as non-ionic surfactants or crop oil concentrates to enhance the activity of its granular product. Nicosulfuron has no residual activity, being quickly metabolised by plants.
Nicosulfuron shows high selectivity to maize, but treatment of maize crops with some soil insecticides sensitises the crop to nicosulfuron, resulting in crop damage. Dupont and isk report that nicosulfuron is safe to soybeans planted in rotation with maize.
Common name: atrazine
Cas no. 1912-24-9
Molecular formula: c8h14cln5
Activity: herbicide
Ingredient: 97% tc
Formulation: 50%wp/sc, 80%wp, 90% wdg
Application:
Selective systemic herbicide, absorbed principally through the roots, but also through the foliage, with translocation acropetally in the xylem and accumulation in the apical meristems and leaves.
Uses pre- and post-emergence control of annual broad-leaved weeds and annual grasses in maize, sorghum, sugar cane, pineapples, chemical fallow, grassland, macadamia nuts, conifers, industrial weed control.
In europe, use is concentrated in maize and sorghum at 1.5 kg/ha.
Used also in combinations with many other herbicides.
Phytotoxicity phytotoxic to many crops, including most vegetables, potatoes, soya beans, and peanuts.
2 4 d amine salt
Common name: 2 4 d amine salt
Cas no. 94-75-7
Molecular formula: c8h6cl2o3
Activity: herbicide
Ingredient: 98% tc
Formulation: 720g/l sl, 860g/l sl
Mode of action:
Selective, systematic, post emergent herbicide.
It primarily kills most terrestrial and aquatic broadleaf weeds by causing uncontrolled growth in them, but leaves most grasses such as cereals, lawn turf, and grassland relatively unaffected.
2, 4-d is used to control broadleaf weeds in many places including:
-a variety of field, fruit and vegetable crops, and
-turf, lawns, rights-of-way, aquatic sites and forestry sites.
Pyridaben (NC-129, BAS 3001) is widely used as an acaricide with a long residual action and as an insecticide mainly against sucking insects. Trade names include Nexter, Oracle, Poseidon, Pyramite, Sanmite, and Starling.
Herbicides are substances used to control unwanted plants, commonly known as weeds. They play a crucial role in agriculture by preventing weeds from competing with crops for nutrients, water, and sunlight. There are two main types of herbicides:
Selective herbicides: Target specific weed species while leaving crops unharmed.
Non-selective herbicides: Kill all plants they come into contact with.
Historically, weed control involved manual methods like tilling and altering soil conditions. The first major breakthrough in chemical herbicides came during World War II with the development of 2,4-D, which allowed for selective weed control in cereal crops.
Modern herbicides are widely used in agriculture, forestry, and even urban landscaping to maintain clear spaces and prevent invasive plant species from spreading. However, their use must be carefully managed to avoid environmental damage and resistance in weeds.
