How many sensors does a field need?

Two or three probes per management block is usually enough: one in the driest corner, one in the wettest, and one where the crop is most typical. Adding more probes refines the picture but the pattern shows up quickly.

What happens where there is no mobile signal?

Probes store readings locally and the handset app works offline. When a connection appears — at the shed, in the village, or on the road home — everything syncs and the dashboard fills in the gap.

Does Patjol control the pumps and valves?

Not on its own. Patjol proposes a schedule and records what you decide. Where a grower already has controllable valves, runs can be triggered from the schedule, but nothing opens without a person approving it.

Who owns the field data?

The grower does. Data can be exported at any time, and a cooperative only sees a member's field data when that member shares it.

Can a cooperative manage several members from one account?

Yes. A cooperative view groups member fields, shows which blocks are under moisture target, and lets an agronomist compare blocks growing the same crop without opening each account separately.

Agricultural technology

Grow smarter with every season.

Patjol combines field sensors, weather data and agronomic knowhow into one simple dashboard so growers can water less, waste less and harvest more.

Field sensors, every 15 minutes
Irrigation plans you can adjust
Agronomy notes in plain language

A grower in a straw hat standing in a green paddy field, reading field data on a rugged tablet

Sample field reading

31% soil moisture

Block Selatan, 20 cm depth. Illustrative data.

Soil and moisture sensing

Readings from probes at root depth show what the surface cannot: where moisture is holding and where it is draining away.

Irrigation planning

Turn readings and forecast rain into a run schedule for each block, then adjust it by hand whenever the field says otherwise.

Yield and input tracking

Record what went on the land and what came off it, season after season, so comparisons are based on your own records.

Works offline in the field

Log readings and notes without signal. Everything syncs when the handset next finds a connection.

Live field dashboard demo

One screen for moisture, weather and water

Switch between three sample fields. Skip or keep an irrigation run and the water counter updates with it.

Demo data

Paddy rice · 4.2 ha · target 34% moisture

Soil moisture, last seven days

% volumetric

Illustrative readings for Sawah Utara. Solid line is root depth, dashed line is surface.

Water saved this week

26,000litres

2 of 3 runs kept · 69,000 litres scheduled

Estimate based on demo sensor and forecast data.

Seven day weather

Mo30°10%
Tu28°70%
We27°80%
Th30°20%
Fr32°5%
Sa33°0%
Su29°40%

Daily high in °C and chance of rain. Sample forecast.

Irrigation schedule

Toggle a run off to skip it. Your choice is recorded, not overridden.

Tue
Bund 1–3 · 05:30–06:15
Heavy rain forecast — skipping is likely enough
26,000 L
Skipped
Thu
Bund 4–6 · 05:30–06:30
Top-up after the rain passes
31,000 L
Run
Sat
Bund 1–6 · 05:00–06:30
Hottest day of the week
38,000 L
Run

Demo only — this dashboard is not connected to live equipment. Volumes are illustrative and days are shown as Mon to Sun.

How it works

Four steps, no change to how you farm

Patjol is built around the way growers already work. It measures, it suggests, and it leaves the judgement with the person who knows the ground.

Place the sensors

Two or three probes per block, set at root depth where the crop actually draws water. Installation takes an afternoon and no trenching.

Connect the field to the forecast

Patjol pairs each probe with local weather data, so a reading is always read alongside the rain that is coming.

Get a plan you can argue with

The dashboard suggests irrigation runs. You keep, shift or skip them. Your decision is the one that gets recorded.

Compare season to season

Water, inputs and harvest sit in one record, so next year's plan starts from what your own land did last year.

Sprinkler irrigation running across a field at sunrise

Close up of dark crumbly cultivated soil held in a farmer's cupped hands

Example scenarios

Who this is for

Illustrative examples of how Patjol would be used. These are scenarios we designed the product around, not accounts of existing customers.

A smallholder with three paddy plots

Rain came early last week and the pump still ran. With probes in each plot, the schedule proposes skipping the run before the rain, and the plot record shows how much water that decision kept.

A cooperative sharing one set of sensors

Twenty members, one sensor pool. The kit moves between blocks each cycle and the cooperative view shows which member's field is furthest below moisture target this week.

An agronomist covering a wide district

Instead of driving to every farm to take readings, the agronomist opens the dashboard, sees which blocks moved, and spends the day where the numbers say attention is needed.

For growers, for cooperatives

The same field data, read two ways

An individual grower wants tomorrow's decision. A cooperative wants to see the pattern across every member. Patjol serves both from one set of readings.

For individual growers

Set up in an afternoon, one block at a time
Moisture, rain and irrigation on a single screen
Notes and photos logged offline, synced later
Season records you can compare without a spreadsheet

For cooperatives and agronomists

Member fields grouped in one view
Blocks below moisture target flagged for the agronomist
Shared sensor pool moved between members between cycles
Aggregate water and input reporting for the whole group

Sensors

The kit in the ground

Patjol Probe

Soil moisture and temperature at two depths

Buried at root depth, reads every 15 minutes, battery rated for two seasons.

Patjol Relay

Long-range field gateway

Collects up to 30 probes across roughly 3 km of open ground and stores readings when offline.

Patjol Flow

Inline pump and channel meter

Measures what actually reaches the block, so plans are checked against delivery.

Patjol Hub

Shed unit with local dashboard

Runs the dashboard on the farm network whether or not the internet is up.

ROI illustration

A rough sense of the water in play

Enter an area and a crop to see an illustrative range for water and cost that better scheduling could keep in the channel. These are worked examples for discussion, not a forecast or a guarantee of results on your land.

Area under irrigation (hectares)

Crop type

Illustrative seasonal range

Water kept in the channel: 3,720–6,900m³
Pumping and water cost avoided: €20–30

Based on 6 ha and sample water and energy rates. Illustration only.

About the name

Why Patjol

Patjol is a historical Indonesian spelling of the word for an agricultural hoe: the tool that breaks ground, shapes a bund and clears a channel. It is a name about cultivation and practical work rather than about software.

We chose it because that is the standard we hold the product to. A hoe is simple, repairable and used by the person who understands the plot. A dashboard should be no different — plain readings, honest suggestions, and a grower's judgement at the end of it.

The mark is a hoe seen side on, its blade cut from a leaf — knowhow and growth in one shape.

Water-filled terraced rice paddies stepping down a green hillside in the morning haze

FAQ

Questions growers ask first

Straight answers about kit, connectivity and who decides what.

Contact

Tell us about your fields

Send a short note about your crops, your blocks and how you irrigate now. We will reply with what a first season with Patjol would look like.

Enquiries: info@exergist.com
Best time to talk: We keep calls to the shoulders of the day — early morning or after the field work is done.
Languages: English and Bahasa Indonesia.