Broadcast Spraying Herbicide Pesticide
15ha/hr = 50x labour, 30% chem save
Mission briefing
Broadcast Spraying Herbicide Pesticide sits in the treatment stage of the crop cycle. It runs on a agras t40/t50 carrying sprayer 40l 8 nozzles, and in Bihar the window is 20-60 das at a frequency of 2-3 sprays per season. Expect roughly 15ha/hr per sortie, and stand the drone down outside the wind <5m/s, temp <35c, humidity >50%, 6-10am or 4-7pm envelope — flying past it wastes chemical and risks drift onto neighbouring plots. Readings are interpreted through NA, so the payload has to output those bands rather than plain RGB. 15ha/hr = 50x labour, 30% chem save On a easy-difficulty mission like this, the cost driver is not the drone — it is the number of return trips and the pilot hours around them, which is what the payback maths on the economics page turns on.
What you need
- Payload
- Sprayer 40L 8 nozzles
- Drone class
- Agras T40/T50
- Vegetation indices
- NA
When to fly (Bihar)
- Timing
- 20-60 DAS
- Frequency
- 2-3 sprays per season
- Coverage
- 15ha/hr
- Weather envelope
- Wind <5m/s, Temp <35C, Humidity >50%, 6-10am or 4-7pm
Drones that run this mission
Chemicals commonly loaded
High-frequency CIBRC-approved products in Bihar — check PHI and re-entry before you schedule this pass.
| Product | Target | Dose/ha | PHI |
|---|---|---|---|
| Chlorantraniliprole 18.4% SC | Stem borer, Leaf folder, Fruit borer, Bollworm, Fall armyworm, Pod borer, Tobacco caterpillar | 150-200 ml/ha | 7d |
| Emamectin Benzoate 5% SG | Bollworm, Diamondback moth, Fruit borer, Shoot borer, Pod borer, Thrips | 150-250 g/ha | 3d |
| Imidacloprid 17.8% SL | Hopper, Aphid, Whitefly, Jassid, Thrips, Scale insect | 250-500 ml/ha | 14d |
| Bispyribac Sodium 10% SC | Barnyard grass, Echinochloa, Sedges, Broadleaf weeds, Purple nutsedge | 250-400 ml/ha | 75d |
| Metsulfuron Methyl 20% WP | Bathua, Senji, Broadleaf weeds, Sedges, Parthenium, Motha | 20-30 g/ha | 60d |