Columbus by BHARAT (Orthosulfamuron 50% WG)
Herbicide · Detailed usage and dosage information for different crops
Slightly toxic — green label triangle (Caution)
Columbus dosage by crop
Pre-harvest interval (PHI): 65 days depending on crop. Do not harvest before the waiting period is complete.
| Crop | Pest / disease | Method | a.i. per ha | Formulation per ha | Water (L/ha) | Waiting period (days) |
|---|---|---|---|---|---|---|
| Paddy | Barnyard Grass · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
| Paddy | Fimbristylis Spp · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
| Paddy | Hoora Grass · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
| Paddy | Nut Grass · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
| Paddy | Rotala Spp · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
| Paddy | Scirpus Spp · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
| Paddy | Watercress · Weeds | Spray | 60-75 | 150 3 DAT | 500 | 65 |
Read the label. Doses above are the registered label claims (Central Insecticides Board & Registration Committee) for information only. Always follow the product label and your local agriculture officer's advice, wear protective equipment, and observe the waiting period before harvest. Found an error? Report it. See our terms of use.
Product Label & Registration
Columbus by BHARAT is registered under India's Insecticides Act 1968. The product label specifies the exact active ingredient concentration (Orthosulfamuron 50% WG), approved crops, application method, safety precautions, and the pre-harvest waiting period.
Always purchase from a licensed dealer and verify the registration on the official CIB&RC database before use.
Agri Input Dealers
Find licensed seed, fertilizer and pesticide dealers near you.
Weather & Crop Advisories
District-level agromet advisories combining IMD 5-day weather forecasts with crop-specific pest, disease and irrigation recommendations.
Government Schemes for Farmers
Subsidies, crop insurance, loans and input support — check eligibility and apply online.
Agri Finance & Credit
Loans, crop insurance and investment norms — NABARD unit costs, PMFBY rates and KCC interest.
Source: Central Insecticides Board & Registration Committee (CIB&RC), India - official registered label data · View source →. Updated: updated annually or when label claims change · Report an error
Frequently Asked Questions
What crops is Columbus registered for?
Columbus (Orthosulfamuron 50% WG) is registered for use in Paddy as per CIB&RC label claims.
What is the dosage of Columbus?
Dosage of Columbus varies by crop and pest. Always follow the CIB&RC registered label dose for each crop.
Is Columbus safe to use near water bodies?
Always follow the Columbus label instructions regarding buffer zones near water bodies, drainage channels, or ponds. Do not spray during windy conditions or when rain is forecast within 4 hours. Dispose of empty containers as directed on the label — never near water sources.
Where can I buy Columbus by BHARAT in India?
Columbus is available from licensed pesticide dealers across India. Use the NaPanta app to find verified dealers near you who stock BHARAT products. Always purchase pesticides from licensed dealers and insist on a bill to ensure authenticity.
What precautions should I take when using Columbus?
Wear personal protective equipment (PPE) — gloves, mask, eye protection, and full-sleeved clothing — when mixing and applying Columbus. Do not eat, drink, or smoke during application. Wash thoroughly after use. Keep children and animals away from the treated area until the spray dries. Observe the pre-harvest waiting period listed on the label.