In the semi-arid areas, maize production is limited by low soil moisture availability, unreliable rains and deteriorating soil fertility. Potential solutions involve the use of technologies that can enhance the ability to capture water, hold moisture and provide nutrients in what are known as an integrated soil and water conservation technology. The study assessed the impact of the Soil and Water Conservation (SWC) technologies implemented in combination on soil moisture, maize growth and yield in the OND 2025 and MAM 2026 seasons in Mbooni Sub-County of Makueni County, Kenya. A total of 18 treatment combinations of Zai pits, Jembe holes; mulch; farmyard manure (FYM); and diammonium phosphate (DAP) were tested. Analysis of variance was used to analyze soil moisture content; growth parameters of maize and yield and treatment means were separated at 5% significance level. The integrated treatments affected soil water availability and maize growth, with different effects on different growth parameters and seasons. Overall, the most complete treatment (Zai + mulch + hydrogel + FYM + DAP, T09) consistently recorded the highest yield of 6.03 t ha⁻¹ in OND 2025 and 6.13 t ha⁻¹ in MAM 2026 seasons. Overall, treatment performance was highly related between both seasons (r = 0.826, P < 0.001), suggesting consistency in the relative effectiveness of the integrated technologies for the different seasons. Results show that the integration of water-harvesting structures, moisture-retention practices and fertility inputs are more beneficial for maize production than less integrated approaches. The study identifies the potential of integrated Zai pit-based technologies to enhance maize productivity and the resilience of rain-fed farming systems in semi-arid.