johnautomate · Spraying systems

Calibrated droplets, audit-grade logs.

The johnautomate spraying kit is the wet half of the system: tanks, pumps, nozzles, valves and flow meters.

System anatomy

Four parts. Two pumps. One audit trail.

Every JA-series drone carries the same modular spray stack — designed so any technician at any dealer can swap a part in the field without recalibration.

Tank capacity

10 / 16 / 22 / 30 L

Pump type

Twin diaphragm, 4 bar

Flow rate

1.6 – 6.0 L/min

Nozzles per arm

1 (pressure) or 2 (centrifugal)

Droplet range

90 – 400 µm

Swath width

3 – 7 m programmable

Flow meter accuracy

± 1.5% (audit-grade)

Chemical compatibility

pH 4 – 11, granules ≤ 2 mm

Three nozzle systems

Pick by chemical, not by guess.

Droplet size, not flow rate, determines coverage and drift. Three nozzle modules — all hot-swappable.

Centrifugal

JA-Cent 250

100–250 µm. Best for herbicides & contact insecticides. Lowest drift.

Flow

1.6–3.2 L/min

Best for

Paddy, wheat

Pressure flat-fan

JA-Press 350

200–400 µm. Heavier droplets for systemic fungicides & oily formulations.

Flow

2.4–6.0 L/min

Best for

Cotton, soybean

Granule

JA-Gran Spread

Solid spreader unit. Urea, DAP, seed broadcast. JA-22 Pro and JA-30 Hex only.

Capacity

12 kg / hopper

Best for

Fertilizer, seed

Tool

Spray coverage calculator

Plan a spray job in seconds. Adjust acreage, crop, drone and dose — see time, water, chemical and ₹ cost update live.

Field size (acres)

Crop

Drone

Chemical cost (₹ / L)

₹850

Estimated job

Total area25 ac

Spray time8h 24m

Water needed505 L

Chemical cost₹21,463

Battery swaps8

Vs. manual labour−₹14,500

₹26,213 totalAll-in incl. drone amortization. ~₹1,050 / acre.

Safety & compliance

Made for India's spray rules — and your neighbours' fields.

	johnautomate	Manual / tractor	Notes
Droplet drift	< 2.5 m	8 – 15 m	Centrifugal + altitude control
Applicator exposure	Minimal	High	Pilot stands 50 m+ away
Water used per acre	8 – 12 L	180 – 220 L	~95% reduction
Audit trail per job	Per-row JSON	Handwritten	Accepted by APEDA & FPO
DGCA compliance	Built-in	N/A	UIN, RPC, geofencing pre-loaded