EFFECT OF SUPPLEMENTARY IRRIGATION ON CROP WATER STRESS AND SOIL MOISTURE CONTENT UNDER DIFFERENT CONSERVATION METHODS AT NYANKPALA

Abstract

In agriculture, the optimization of water uses while guaranteeing crop production is a key issue, especially in areas where water is scarce. This study investigated the influence of Supplementary irrigation on crop water stress within diverse soil conservation methods at Nyankpala. Focusing on amaranth as a model crop, the study elucidated the effects of irrigation and conservation techniques on the plant performance. Using a split-plot design, the research assessed the impact of Supplementary irrigation regimes on crop water stress, growth and yield. Notably, the findings highlight the positive influence of Supplementary irrigation in conjunction with three specific soil conservation methods: "Raised beds", "Ridge tillage" and “Flats lands". Our findings reveal that Supplementary irrigation at a rate of 70% of Evapotranspiration (ETC), when combined with "Raised beds" and "Ridge tillage" soil preparation methods, has proven highly effective in optimizing water utilization These methods exhibited a noteworthy improvement in soil moisture content, plant water stress, and crop yield. The study also highlighted the importance of better understanding the relationship between irrigation and soil conservation practices. The results offer a practical perspective on maximizing water use efficiency and mitigating water stress in agriculture. In a context of water scarcity, these results have practical implications for more sustainable agricultural practices, enhancing the efficient management of water resources while increasing agricultural productivity. This study underscores the feasibility of combining Supplementary irrigation with targeted soil conservation techniques to enhance crop resilience and optimize water utilization. The principles established in our research can be extended to a variety of crops, promoting agricultural diversification. Furthermore, the implementation of these results can contribute to environmental conservation, healthier soils and economic benefits at both individual and regional levels.