Drip Irrigation for Mango

Mango's irrigation requirements

Mango's demand is higher than avocado's across the board — bigger canopy, bigger fruit, and a fruiting window where the water bill peaks. The pattern: moderate steady supply through the year, stepping up around flowering and fruit development (the months that decide the harvest's value), and standing down in the rains. The sensitivities mirror avocado's — waterlogging on the heavy soils damages the roots, and the late-season supply is what fills the fruit — but the volumes are larger, which means the emitters and the runs are sized up.

Mango grows across Kenya's midlands and coastal-influenced zones — Machakos, Makueni, Kitui, Kajiado, Meru, the Rift's warm side, and the coast — which is also where the dry season is longest and driest, and where drip's value is most visible.

The system setup

Typical starting points for common mango spacings (8×8m to 10×10m) — the layout follows your actual spacing and canopy. Method in the orchard irrigation guide.

Two mango-specific design notes: the fruiting peak sets the pump and the runs — the system is sized for the heaviest month, not the average one; and the canopy radius is where the lines go, because the fruiting wood (and its roots) is at the edge, not the trunk.

Scheduling around the fruiting season

• Flowering: even supply — drought stress at flowering is the classic cause of poor set, and over-watering can push vegetative growth that competes with the flowers.
• Fruit development (the peak): the biggest demand window of the year — the runs are longest here, and this is where the source must actually deliver. A mango season is decided in these months.
• Pre-harvest: steady supply until the fruit is done — the final weeks of water are in the fruit's weight and sugar.
• Rainy season: the schedule stands down as with the other orchard crops — supplement, and on the heavy soils, irrigate little or nothing.

Filtration and water source

Mango orchards in the midlands commonly run on boreholes and dams. The borehole route: disc filter with the iron watch (same story as avocado — slow clogs, weekly cleaning). The dam route: sand/media stage first, and the storage check for the fruiting peak — a dam that's full in the rains and low in the fruiting months needs a storage plan, not just a pump. See the filtration guide and the water quantity guide.

Fertigation

Mango is a good fertigation crop, particularly for the fruiting program: the feed demand around flowering and fruit set is exactly when the tree is most responsive, and drip puts it at the active root zone. A two-tank program following the orchard's agronomy plan is the standard on commercial blocks; smaller orchards often run a lighter schedule — base feeding plus a fertigated fruiting push. See the fertigation guide.

Common installation mistakes

• Emitters sized for avocado on a mango canopy — the fruiting peak flow is bigger, and an under-flowed system stretches the runs to impractical lengths.
• Lines at the trunk on a wide-canopy tree — the fruiting wood's roots are at the canopy edge; the wetted area must match it.
• Source sized for the dry average, not the fruiting peak — the mango season is a few long months, and the source's behaviour in those months is what the design must meet.
• Waterlogging on the clay — the same rule as avocado: the schedule flexes with the season, and on the heavy soils the dry-side bias is the default.

Cost considerations

Mango sits in the orchard cost band, with the pump and the dry-season storage carrying a large share in the midlands — the fruiting peak is what sizes both. The line count grows with the canopy over the orchard's life, the same known expansion as avocado. See the cost guide for the general picture; the quote is built from your tree count, spacing and source.

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