Divisi
When to plant Cowpea in Mansoa
Oio, Guinea-Bissau
Cowpea (nyemba, kunde, niébé, black-eyed pea) is a tough, drought-beating legume for warm country.
| Measure | Rain-fed | With irrigation |
|---|---|---|
| Fit | Favourable | |
| When to plant | 23 May 2026 – 20 Sep 2026 closed for this season | 21 Jan 2026 – 1 Jan 2027 |
| Expected harvest | about 1.8 t/ha | about 2.5 t/ha |
| Harvest | From 22 Jul 2026 to 18 Jan 2027, depending on the planting date | |
| Ready to harvest | 60–120 days after planting | |
| Work it takes | 50–105 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 2 Jun 2026. That is the point in the window where the rains are most reliably established.
This season's rainfall outlook for Mansoa is close to normal, so these dates match the pattern the area usually follows.
Planting after 20 Sep 2026 leaves the crop short of season: it runs into the dry months before it has finished filling.
What decides this in Mansoa
| Rain and temperature | 96% |
|---|---|
| The soil | 96% |
| The lie of the land | 88% |
For cowpea in Mansoa, 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 season in Mansoa
| Rainy seasons | One each year — one chance to plant, so timing carries it |
|---|---|
| When the rains are expected | May 2026 to November 2026 |
| Rain in a typical year | About 1,434 mm |
| This season's rain | Rain close to usual — plan around about 1,434 mm falling roughly when it always does |
| This season's heat | Hotter than usual — about +0.9 °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 full main crop, warm all year, so nothing but rain ends the season |
| Ground this covers | 2 kinds of ground. The season below is the largest that farms — about 87% of this area. |
| 87% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 182 growing days · about 1,490 mm · May to November |
|---|---|
| 12% | enough rain for one full main crop; warm all year, so nothing but rain ends the season 182 growing days · about 1,560 mm · May to November |
last updated 16 September 2026
Frost and pest pressure hold back about 15% of yield here.
What cowpea needs to grow here
| Soil it likes | well-drained sand, sandy loam or loam soil |
|---|---|
| Soil sourness (pH) | Happiest between pH 5.5 and 6.5 |
| Spacing | 75 cm between rows, 25 cm between plants |
| Feed it most with | phosphorus and potassium |
What it takes to grow cowpea in Mansoa
| Planting material | About 90,000 plants per hectare |
|---|---|
| Nitrogen (N) | About 108 kg per hectare — the crop fixes most of this itself; inoculated seed matters more than a bag |
| Phosphate (P₂O₅) | About 22 kg per hectare |
| Potash (K₂O) | About 40 kg per hectare |
| In the shops | A basal compound at planting — Compound D, or an NPK blend — covers the phosphate and potash. Skip the nitrogen top dressing; inoculated seed does that job. |
| Hand work | 50–105 days per hectare, by hand |
These are the nutrients a cowpea 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 Cowpea with a plan, not a guess
Everything above describes Mansoa 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.
Cowpea 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 cowpea grow well in Mansoa?
Mansoa rates as favourable for cowpea.
When should I plant cowpea in Mansoa?
Typically 23 May 2026 to 20 Sep 2026, forecast-adjusted.
Is this exact for my own field?
No — these are readings taken across Mansoa, not on your field. Soil, slope and rainfall change from one farm to the next. Check your own location to see your own numbers.
