Combating the drought with clever ideas
Biovision is collaborating with smallholder farming families, authorities, and scientists in central Tanzania to test and implement agroecological methods to combat drought and erosion. Trenches, dams, and resilient crop varieties are helping to address drought and irregular rainfall in the Kongwa district.
Initial situation: Harsh climatic conditions
Smallholder families in the arid regions of central Tanzania farm under the most difficult conditions. They grow maize and millet on small, barren plots of land. The area has an extended dry season lasting several months and the farmers have to cope with irregular rainfall. Droughts during the rainy season repeatedly lead to complete crop failures. At the same time, heavy rainfall, especially at the beginning of the growing season when the fields are still bare, washes away fertile soil and freshly planted seeds, destroying the basis for farming.
Goals: Resilient farmland
To sustainably improve agricultural productivity – and with it the income and food security of smallholder families – Biovision is working together with the International Livestock Research Institute (ILRI) and the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), applying community-based, landscape-oriented and participatory approaches. The aim is to enhance the sustainability and drought resilience of smallholder farming systems. The project is now working with around 600 farmers and farmer groups in two districts of central Tanzania.
At a glance
Project name:
Trenches against drought
Beneficiaries: Tanzania
Partner organizations:
International Livestock Research Institute (ILRI)
Project budget in CHF :
430800
Participants: Smallholder farmers
Project Officer:
Project phase: 2024-2026
The project addresses the following SDGs from UN Agenda 2030:
This project is supported by SDC
Region
Topics
"We dig trenches, seedlings grow ... It's a slow process, but I can see how the region is gradually becoming green again."
Peter Ngowi, Icrisat project manager in Kongwa, Tanzania
Effect to date: longer cultivation windows, fertile soils
Tried and tested measures include dams and ditches along the slopes, which help to slow down the flow of water and the associated erosion of the soil. As a result, more rain seeps into the fields and farmers can significantly extend their growing season. The introduction of drought-tolerant mixed crops and trees also helps to restore soil fertility and increase yields. This increases farmers' incomes, diversifies the diet of smallholder families and generally helps to make local agriculture more profitable and resilient.
In addition, the project promotes Farmer Managed Natural Resource Management (FMNR), enabling farmers to protect and regenerate trees and natural vegetation on their land. A new demonstration site is also being established to showcase agroecological practices and foster knowledge exchange between farmers and agricultural institutions.
Facts and figures about the project
Smallholder families in the Kongwa district have increased their income and improved their food security.
Next steps: Involving livestock farming
In future, we want to tackle several issues together with our local partners and farming families:
Firstly, we need to communicate even more about the benefits and achievements of this type of agriculture. The benefits of trenches, drought-resistant mixed crops and cleverly planted trees should receive more attention from the population.
This means that the authorities also need to be more involved in the projects. Farming families should adopt similar measures to cope with irregular rainfall, not just regionally, but increasingly throughout the country.
Secondly, in the next phase, we want to bring this new type of land cultivation into even better harmony with local livestock farming. The farmers' animals should also benefit from the surplus of planted vegetables and thus be able to count on an additional source of feed even in the drier months. This ensures healthier chickens that lay more eggs and cows that ideally even produce milk during periods of drought, thus providing farming families with additional sources of income and a balanced diet.
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