2. All Clear - Chemical Properties
Solubility : Water soluble
• Belong to chemical family of Bipyridylium
Reactivity Profile
• Stable in acidic media, but unstable in alkaline media
• Decomposes photochemically by UV radiation in aqueous
solutions and is rapidly inactivated by soil
• Sensitive to light
• Corrosive to metal and react with strong acids, bases, and
oxidizing agents
• Hydrolyzed by alkali compounds
• Inactivated by inert clays and anionic surfactants
3. What is All Clear
• All clear is a contact, Non- Selective, post emergence herbicide
• All Clear is used as foliar Spray to control broad leaf weeds and grasses
• All Clear control all annual and certain perennial weeds
• Wide usage in terms of crops like Corn, soya, wheat, rice, potatoes, fruit
(oranges, apples, bananas), coffee, tea, cocoa, cotton, oil palm, sugar
beet, sugarcane and rubber
• An ideal herbicide for conservation and no-till systems (only controls the
foliage parts of weeds), thus promoting intact roots and preventing soil
erosion
4. Mode of action
• All Clear inhibits photosynthesis
• All Clear results in rapid disruption of cell membranes and kills rapidly.
• All Clear penetrate into the cytoplasm, form peroxides and free
electrons (light is required) which destroy the cell membranes almost
immediately
• Rapid destruction of cell membranes prevents translocation of energy
to other regions of the plant
• Severe injury is evident in few hours after application, first as water-
soaked areas which later turn yellow or brown
• Maximum control is attained in a week
• Partial spray coverage of a plant results in spotting or partial shoot kill
• It is redistributed within the plant, but does not harm mature bark
5. Importance
• All clear is strongly cationic and relatively toxic herbicide
• It is very fast-acting, results appears with in week time
• It is rain-fast within 15-30 minutes of application
• All clear is also effective under low temperatures when weeds are
making little active growth
• All Clear do not penetrate mature bark, sprayed safely around trees and
beneath bushes
• All clear has no ‘residual’ activity in soil, can be sprayed before crops are
planted or seedlings emerge
• All Clear strongly bind to clay, preventing activity for weed control or
leaching in the soil
• All Clear solution with suspended colloids like muddy water, slurry,
fertilizers etc will cause chemical inactivation.
• All Clear is used for killing shoot in numerous situations like burn down
in conservation tillage systems and pre-harvest desiccation.
6. Dosage
Crop Weed Dosage per ac
Tea Imperata cylindrica, Setaria Spp., Commelina
bengalensis, Boerhavia hispida, Paspalum
conjugatum
1 to 1.75 lt
Potato Chenopodium spp., Anagallis arvensis, Trianthema
Monogyna, Cyperus rotandus
800 ml to 1 lt
Coffee Euphorbia hirta, Digitaria marginata, Eleusine
indica, Boerhavia hispida, Commelina bengalensis
500 ml
Cotton Digera arvensis, Cyperus spp 800 ml
8. Common Name: common lambsquarters, white goosefoot, mealweed, fat
hen
Scientific Name: Chenopodium album L.
Family Name: Chenopodiaceae
life cycle - introduced annual, reproducing by seeds
10. Common Name: Asiatic dayflower
Scientific Name: Commelia communis L.
Family Name: Commelinaceae
life cycle - introduced annual, reproducing by seed
Krishneel
11. Common Name: yellow nutsedge, nut-grass, chufa
Scientific Name: Cyperus esculentus L.
Family Name: Cyperaceae
life cycle - native perennial, reproducing by seed (rare) and tubers (nutlets) at end of
short, scaly rhizomes
12. Common Name: large crabgrass, hairy crabgrass
Scientific Name: Digitaria sanguinalis (L.) Scop.
Family Name: Poaceae (Graminae) - Grass Family
• life cycle - introduced annual, reproducing by seed
Kanki Ghas
Khabal Ghas
13. Common Name: goosegrass, silver crabgrass, crowfoot, yardgrass,
wiregrass
Scientific Name: Eleusine indica (L.) Gaertn.
Family Name: Poaceae (Graminae) - Grass Family
• life cycle - introduced annual, reproducing by seed