Divisi
When to plant Yam in Domoni
Anjouan (Ndzouani), Comores
Yam is a climbing vine that grows one big food tuber underground over a long 7-11 month season.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 18 Sep 2026 – 27 Nov 2026 open now | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | about 17.1 t/ha | about 9.2 t/ha |
| Harvest | From 17 Mar 2027 to 23 Oct 2027, depending on the planting date | |
| Ready to harvest | 180–330 days after planting | |
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 18 Oct 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Domoni is close to normal, so these dates match the pattern the area usually follows.
Planting after 27 Nov 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Domoni
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 45% |
For yam in Domoni, the lie of the land is the tightest of the three at 45%. 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 Domoni
| When the rains are expected | September 2026 to August 2027 |
|---|---|
| Rain in a typical year | About 1,705 mm |
| This season's rain | Rain close to usual — plan around about 1,705 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +1.0 °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 a long crop, or two in a year, warm all year, so nothing but rain ends the season |
| Ground this covers | 4 kinds of ground. The season below is the largest that farms — about 50% of this area. |
| 50% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 311 growing days · about 1,670 mm · September to July |
|---|---|
| 29% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 259 growing days · about 1,460 mm · October to June |
| 14% | enough rain for a long crop, or two in a year; warm all year, so nothing but rain ends the season 288 growing days · about 1,550 mm · September to July |
| 7% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 264 growing days · about 1,500 mm · September to July |
last updated 17 September 2026
Sloping ground holds back about 35% of yield here.
What yam needs to grow here
| Soil it likes | well-drained sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.5 and 7.0 |
| Spacing | 100 cm between rows, 100 cm between plants |
| Feed it most with | nitrogen and potassium |
What it takes to grow yam in Domoni
| Planting material | About 10,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 64 kg per hectare |
| Phosphate (P₂O₅) | About 19 kg per hectare |
| Potash (K₂O) | About 98 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. |
These are the nutrients a yam 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 Yam with a plan, not a guess
Everything above describes Domoni 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.
Yam in nearby districts
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 yam grow well in Domoni?
Domoni rates as favourable for yam.
When should I plant yam in Domoni?
Typically 18 Sep 2026 to 27 Nov 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Domoni, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
