Chikwawa’s dry-season vegetable growers used to burn 4 L of diesel per hour to keep sprinklers running. A 12-farm pilot with 300 W solar pumps and drip tape cut water use by 48% and eliminated fuel costs entirely — with tomatoes reaching market three weeks earlier than the rain-fed control plots.
The biggest surprise wasn’t the pump. It was the mulch. Grass and cassava-leaf mulches kept soil temperature 6-8 °C cooler at midday, and the moisture savings compounded with the drip savings. Total input cost per hectare dropped by 34%.
If you want the equipment list and supplier contacts, see the **Resources → Drip Irrigation Setup** guide.