wajenzi.

Advice, sensors and data

Services built on one network of soil sensors and one phone line to every farmer, so farmers, buyers and lenders all work from the same ground truth.

Northern Ghana5 services · 1 network

From soil to phone

Measure

Sensors on the plot read soil moisture and nutrients at the root zone.

Combine

Radar and ECMWF forecasts are fused with the readings from the ground.

Decide

The engine checks the soil against what the crop needs to germinate.

Deliver

One instruction goes out by USSD or voice, in the farmer’s language.

Built for smallholders

  • Any phone, no data

    USSD and voice calls work on every basic phone, with no smartphone and no data plan.

  • In the farmer’s language

    Advice is recorded by native speakers, starting with Twi and Dagbani, so farmers who cannot read still hear it.

  • Checked against local soils

    Before a sensor's nutrient readings shape advice, they are checked against lab tests for the soil it sits in.

  • Paid for by those who gain

    We aim for lenders, insurers and programmes that lower their risk to carry the cost of the network, not the farmer.

Questions about services

Who are these services for?

Farmer groups and cooperatives, district agriculture offices, input dealers, and the lenders and insurers who serve smallholders.

Does the farmer pay for advice?

Our aim is no. Smallholder margins are too thin for subscriptions, so we expect lenders, insurers and programmes that gain from lower risk to fund the network. Pricing will be set during the pilot.

How many sensors does an area need?

It depends on soils and terrain. A cooperative network might use around 100 sensors and two gateways, with satellite radar covering the ground in between.

What does a network cost to run?

Over five years, a 100-sensor network with two gateways can pass €55,000 once installation, maintenance and software are counted. The sensors themselves are the smaller part.

Who owns the data from a plot?

The farmer. We ask for consent before sharing plot data with any lender or insurer, and we do not sell it.