Divisi
When to plant Fonio in Bir Dheheb
Tebessa, Algeria
Fonio (Digitaria exilis) — also called acha, hungry rice, findi or fundi — is West Africa's ancient small grain and the fastest cereal in the world: early types give grain in about 70 to 85 days, some in as little as 6 to 8 weeks.
| Fit | Favourable |
|---|---|
| When to plant | 1 May 2027 – 30 Jun 2027 opens in 30 weeks |
| Expected harvest | about 1.5 t/ha |
| Harvest | From 30 Jun 2027 to 28 Oct 2027, depending on the planting date |
| Ready to harvest | 60–120 days after planting |
| Work it takes | 82–175 days per hectare, by hand |
Rain-fed. These dates are worked out from each place's own rainfall, for a field watered by the season — with irrigation a window can open earlier, close later, or come round more than once a year. Check your own field under What grows, or get the Divisi app for a calendar dated to your farm.
If you only get one chance to plant, aim for around 1 May 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Bir Dheheb is close to normal, so these dates match the pattern the area usually follows.
Planting after 30 Jun 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Bir Dheheb
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 88% |
For fonio in Bir Dheheb, the lie of the land is the tightest of the three at 88%. You cannot flatten it, but you can farm it: plant along the contour rather than up and down, ridge or tie ridges to hold water on the slope, and expect shallower rooting than the crop would manage on flat ground.
The 2026/27 season in Bir Dheheb
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | October 2026 to March 2027 |
| Rain in a typical year | About 353 mm |
| This season's rain | Rain close to usual — plan around about 353 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.4 °C over the growing months. Heat makes the same rain do less, so a dry spell bites sooner: do not plant late, and shade or mulch what you can. |
| What that supports | enough rain for one short crop, and only if timed to it, warm, with a cool spell that slows winter growth |
| Ground this covers | 4 kinds of ground. The season below is the largest that farms — about 52% of this area. |
| 52% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 159 growing days · about 380 mm · October to April |
|---|---|
| 28% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 122 growing days · about 340 mm |
| 7% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 122 growing days · about 330 mm |
| 7% | enough rain for one full main crop; warm, with a cool spell that slows winter growth 196 growing days · about 430 mm · October to May |
last updated 18 September 2026
What fonio needs to grow here
| Soil it likes | well-drained sand or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Feed it most with | nitrogen and phosphorus |
What it takes to grow fonio in Bir Dheheb
| Nitrogen (N) | About 30 kg per hectare |
|---|---|
| Phosphate (P₂O₅) | About 9 kg per hectare |
| Potash (K₂O) | About 30 kg per hectare |
| In the shops | A basal compound at planting — Compound D, or an NPK blend — covers the phosphate and potash. A nitrogen top dressing — urea or AN — goes on once the crop is established. |
| Hand work | 82–175 days per hectare, by hand |
These are the nutrients a fonio crop of that size carries off the field. What you actually apply depends on what your soil already holds — which is what a soil test, or the app's field records, tell you.
What to watch for
Grow Fonio with a plan, not a guess
Everything above describes Bir Dheheb as a whole — your own soil, slope and rainfall will shift the dates. The Divisi app works them out for your field, and dates each job that follows.
This calendar moves
Planting windows shift with the forecast. Leave your email and we'll send what changed, and a note when planting time nears — a couple of emails a month at most.
Frequently asked questions
Will fonio grow well in Bir Dheheb?
Bir Dheheb rates as favourable for fonio.
When should I plant fonio in Bir Dheheb?
Typically 1 May 2027 to 30 Jun 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Bir Dheheb, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
