Active ingredient and systemic mode of action
Glyphosate inhibits the EPSPS enzyme in the shikimate biosynthetic pathway (HRAC Group 9), blocking the synthesis of essential aromatic amino acids. Absorbed through green foliage, it moves symplastically via the phloem downward into underground roots and rhizomes, eradicating stubborn perennial root systems.
- Active constituent: Ammonium salt of Glyphosate 71% SG (soluble granules)
- Chemical family: Glycine derivative (HRAC Group 9)
- Systemic translocation: Kills both aerial foliage and deep subterranean rhizomes
Target weeds and approved application areas
- Target weeds: Cynodon dactylon (doob grass), Cyperus rotundus (motha), Sorghum halepense, and woody broadleaf weeds.
- Approved zones: Tea plantations and non-cropped land (bunds, canal banks, industrial grounds).
- Land preparation: Fallow field clearing before land shaping and plowing.
Statutory rules and protective spraying
In India, Central Government notifications restrict glyphosate use strictly to tea crops and non-cropped land, requiring application by licensed Pest Control Operators. Use specialized drift guards to prevent drift onto non-target crops, wear chemical-resistant gloves and masks, and never spray in windy weather.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in Excel Mera 71?
It contains the ammonium salt of glyphosate 71% SG in water-soluble granule form.
Why is Mera 71 effective against perennial grasses like Cynodon dactylon?
Its systemic phloem translocation carries the active chemical deep into underground rhizomes and stolons, killing the entire root network.
What are the legal restrictions on glyphosate in India?
Central regulations restrict commercial glyphosate application strictly to tea plantations and non-cropped areas through authorized operators.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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