Chemical profile and systemic mode of action
- Active ingredient: Ammonium Salt of Glyphosate 71% SG (amino acid synthesis inhibitor, HRAC Group 9).
- Mode of action: Inhibits the EPSP synthase enzyme in the shikimic acid pathway, cutting off the synthesis of essential aromatic amino acids (phenylalanine, tyrosine, tryptophan).
- Basipetal translocation: Readily absorbed by lush green foliage and translocates down into rhizomes, roots, and underground storage structures.
- Soil safety: Inactivates rapidly upon contact with mineral soil and clay particles, preventing residual uptake through roots.
Target weeds and approved operational areas
- Perennial grasses: Controls Cynodon dactylon (doob grass), Cyperus rotundus (motha), and Sorghum halepense (Johnson grass).
- Non-crop land: Ideal for maintaining weed-free farm bunds, water drainage channels, fence lines, and field borders.
- Plantation crops: Used in tea and orchard inter-rows with directed spray wands fitted with protective drift hoods.
- Optimum timing: Spray when target weeds are actively growing with ample foliage and before weed flowering.
Government notifications, water quality, and application safety
- Regulatory compliance: Comply with Central and State Government notifications regarding glyphosate usage through certified Pest Control Operators (PCOs) where stipulated.
- Clean water requirement: Always mix in clear, non-turbid water; suspended silt particles bind to glyphosate and negate herbicide activity.
- Spray drift prevention: Use a protective hood around the nozzle to prevent fine spray droplets from contacting cultivated crops.
- Personal protective equipment: Wear protective rubber boots, gloves, goggles, and an approved chemical mask during handling.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the technical ingredient in Meera 71 herbicide?
Meera 71 contains Ammonium Salt of Glyphosate 71% SG in soluble granule form.
How does Meera 71 prevent weed regrowth?
It translocates systemically down to the underground rhizomes and roots, destroying the weed's regenerative structures.
Can Meera 71 be sprayed directly over standing crops?
No, it is a non-selective herbicide that kills cultivated crops if spray droplets land on their leaves.
Why is soft, clean water necessary for mixing Meera 71?
Suspended clay and soil particles in muddy water deactivate glyphosate molecules, drastically lowering weed kill.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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