Divisi
When to plant Irish potato in Ain Djasser
These figures also cover Ouled Sellam, where the engine returns the same answer.
Batna, Algeria
The Irish potato (mbatatisi, ikirayi, viazi mviringo) is a cool-weather crop grown for the tubers that swell underground — it is not a grain, and it is not the same plant as sweet potato.
| Fit | Favourable |
|---|---|
| When to plant | 9 Aug 2027 – 29 Aug 2027 opens in 45 weeks |
| Expected harvest | about 41.5 t/ha |
| Harvest | From 18 Oct 2027 to 6 Jan 2028, depending on the planting date |
| Ready to harvest | 70–130 days after planting |
| Work it takes | 110–185 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 9 Aug 2027. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Ain Djasser is close to normal, so these dates match the pattern the area usually follows.
Planting after 29 Aug 2027 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Ain Djasser
| Rain and temperature | 88% |
|---|---|
| The soil | 76% |
| The lie of the land | 88% |
For irish potato in Ain Djasser, the soil is the tightest of the three at 76%. This is the one you can actually move. Lime raises a sour soil, manure and compost lift what it holds, and both work within a season or two — money spent here changes the answer.
The 2026/27 season in Ain Djasser
| When the rains are expected | October 2026 to March 2027 |
|---|---|
| Rain in a typical year | About 327 mm |
| This season's rain | Rain close to usual — plan around about 327 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 | 2 kinds of ground. The season below is the largest that farms — about 94% of this area. |
| 94% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 162 growing days · about 340 mm · October to March |
|---|---|
| 6% | enough rain for one short crop, and only if timed to it; warm, with a cool spell that slows winter growth 157 growing days · about 340 mm · October to March |
last updated 18 September 2026
Frost and pest pressure hold back about 15% of yield here.
What irish potato needs to grow here
| Soil it likes | well-drained loam or sandy loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.0 and 6.5 |
| Spacing | 75 cm between rows, 28 cm between plants |
| Feed it most with | potassium and magnesium |
What it takes to grow irish potato in Ain Djasser
| Planting material | About 47,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 137 kg per hectare |
| Phosphate (P₂O₅) | About 42 kg per hectare |
| Potash (K₂O) | About 241 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 | 110–185 days per hectare, by hand |
These are the nutrients a irish potato 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 Irish potato with a plan, not a guess
Everything above describes Ain Djasser 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 irish potato grow well in Ain Djasser?
Ain Djasser rates as favourable for irish potato.
When should I plant irish potato in Ain Djasser?
Typically 9 Aug 2027 to 29 Aug 2027, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Ain Djasser, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
