Conclusion
Climate change is increasing uncertainty in agricultural water management, while soil degradation can reduce the capacity of soils to receive, store, transmit and supply water. Agricultural automation offers opportunities for more precise monitoring and irrigation control, but its effectiveness depends partly on the hydraulic condition of the soil. This chapter has therefore positioned organic and mineral amendments as potential enablers of soil-intelligent agricultural automation rather than as automation technologies themselves.
Poultry manure, rice husk ash and other amendments can modify bulk density, aggregate stability, pore architecture, infiltration, saturated hydraulic conductivity and water retention. However, their effects depend on amendment characteristics, application rate, initial soil condition, parent material and time after incorporation. Effective soil-water management must therefore seek an appropriate balance between water entry, transmission, storage and drainage rather than maximize any single hydraulic property.
The chapter proposes a conceptual pathway linking soil diagnosis and targeted amendment application with hydraulic modification, sensing, predictive modelling and automated water management. Within this framework, sensors monitor soil-water conditions, pedotransfer functions and machine-learning models support the interpretation and prediction of hydraulic behaviour, and automated systems use this information to guide irrigation decisions. Accounting for spatial and temporal soil variability is essential to making these decisions responsive to actual soil–crop conditions.
Despite these opportunities, the complete integration of amendment management, sensing, modelling and automated irrigation remains insufficiently tested, particularly in tropical African soils. Its potential to improve water-use efficiency, yield stability, economic performance and climate resilience therefore requires integrated field validation. Ultimately, amendment-enabled agricultural automation offers a promising framework for climate-smart soil-water management, but its contribution to food security will depend on demonstrated agronomic benefits, environmental sustainability and practical accessibility.
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jaerem Akan, P.O.
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