Excel Mera 71: Ammonium Glyphosate 71% SG Guide

Active chemical nature and EPSP synthase inhibition

Mera 71 contains Ammonium salt of Glyphosate 71% SG, an organophosphorus compound delivering complete systemic weed control through foliar absorption.

It works by inhibiting 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase in the shikimate biosynthetic pathway. This halts the synthesis of essential aromatic amino acids (phenylalanine, tyrosine, and tryptophan) required for protein synthesis and plant survival, resulting in complete weed desiccation over 7 to 14 days.

• Active chemical: Ammonium salt of Glyphosate 71% SG (soluble granules).
• HRAC classification: Group 9 (EPSP synthase inhibitor).
• Systemic acropetal and basipetal mobility: Translocates throughout vascular phloem tissues deep into underground rhizomes, tubers, and root systems.
• No soil residual activity: Rapidly binds to soil minerals and degrades microbially, leaving zero harmful soil residues for subsequent crops.

Approved target weed spectrum and application scope

Mera 71 is registered for non-selective vegetation management in tea plantations and non-cropped land according to central statutory directives.

It eliminates hard-to-kill perennial weeds that possess underground rhizomes and tubers that survive mechanical cultivation.

• Perennial grasses: Cynodon dactylon (doob grass), Imperata cylindrica, and Sorghum halepense.
• Broadleaf weeds: Parthenium hysterophorus, Commelina benghalensis, and Amaranthus viridis.
• Difficult sedges: Cyperus rotundus (motha) and Cyperus esculentus.
• Tea plantations: Directed application along drainage channels and plucking lanes avoiding green tea bushes.

Application methodology, spray equipment, and precautions

Because Mera 71 is a non-selective systemic herbicide, extreme care must be exercised to prevent spray droplets from drifting onto green crop foliage.

Apply onto actively growing weeds when they possess green foliage and sufficient leaf surface area for systemic chemical absorption.

Use clean water free of suspended silt or clay, as muddy water rapidly deactivates glyphosate molecules.

• Clean water requirement: Always use clean, clear water; dissolved clay particles bind and inactivate glyphosate.
• Spray nozzle: Use low-pressure knapsack sprayers fitted with flat fan or floodjet nozzles equipped with a protective spray hood.
• Protective measures: Wear protective overalls, rubber gloves, and eye goggles; adhere to statutory regulatory guidelines.

Related on KisanPe

• Crop Protection Guide →
• Pesticide Calculator →
• Ask Sakhi AI →

Common questions

General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.