It Is Time To Aggressively Protect Arable Land In Kenya If We Are To Protect Our Food Security

In the heart of East Africa, the reality of arable land disappearing under urban sprawl and informal settlement is beginning to cripple more than just the soil—it is slowly starving the nation’s future. In Kenya, agriculture contributes approximately 22.4 % of gross domestic product and employs over 60 % of the workforce, yet less than 20 % of the land is classified as high-potential agricultural terrain.  This imbalance is not by accident: it is the product of decades of land-use policy neglect, rapid population growth, and uncoordinated development that treats arable land and vital “water tower” regions as disposable real estate. The consequences ripple through food systems, poverty metrics, and national sovereignty.

The arithmetic is stark. While national cereal imports grow, yields stagnate. The farming high-rainfall zone—roughly 10 % of Kenya’s arable land—produces about 70 % of the country’s commercial agricultural output.  Yet overall productivity remains low due to fragmented land parcels, smallholder constraints, inadequate mechanisation, and loss of fertile ground to real-estate conversion. Meanwhile, the population continues its upward climb, pressuring the margins of arable land and reducing per-capita soil availability. According to one land-use change study, only about 20 % of Kenya’s land is arable, and the five major water-tower regions fall within this arable belt, while roughly 75 % of the population clusters there.

One key diagram illustrates this destructive tension: as land becomes available for large-scale, high-yield agriculture contracts, and as development encroaches on water-tower ecosystems, food security deteriorates. Estimates show that in sample agrarian zones, only 22.6 % of households were food secure, while 39.5 % experienced severe food insecurity.  These are not isolated statistics but symptomatic of a deeper structural failure—one in which arable soil is treated as expendable, rather than indispensable.

Efforts to boost agriculture through irrigation and productivity gains are welcome—but they cannot compensate for the rapid destruction of the very land that underpins food sovereignty. Kenya’s water-resource profile shows that 75 % of surface water originates from a handful of catchments in the central highlands and the west.  When those catchments are compromised by land-use change, deforestation, and building, the impact is twofold: reduced water availability for irrigation and downstream households, and degraded ecosystem resilience precisely when climate variation is intensifying.

Consider the poverty dimension: agriculture remains the mainstay for the bulk of Kenya’s poor. According to FAO and national data, the agrarian sector provides 75 % of raw materials for industry, 25 % of GDP, and employs 70 % of labour in some rural zones.  Yet as arable land declines, the capacity of rural households to participate in viable farming diminishes, increasing vulnerability to shocks and heightening reliance on food imports or urban-migration coping strategies.

Import dependency is rising. Projections suggest that if current trends hold, the gap between agricultural production and consumption will widen dramatically. One estimate indicated that by 2040, Kenya might need to import more than 20 million metric tonnes of agricultural goods—or roughly 25 % of demand.  This looming import burden is not simply an economic cost but a national security vulnerability, exposing Kenya to global price shocks, supply chain disruption, and climate-driven volatility.

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The conversion of arable land into buildings, infrastructure, and speculative real estate is often done without accounting for long-term societal cost. In prime high-potential zones and forest-rich water-catchment sites, land parcels are fragmented, sold for subdivisions and emergent housing—often bypassing strategic agricultural zoning. Without legal prohibition of building on prime arable land and water-tower catchments, the logic of short-term gain overrides generational food security. One recent national audit of water-tower conservation exposed significant neglect and encroachment.

Food security is intrinsically linked to land tenure and an enabling policy environment. But in Kenya, land tenure complexity, informal settlement proliferation, and weak enforcement of zoning regulations have allowed arable land to erode. The 2024–25 Agriculture Census aims to capture more comprehensive d