A study was carried out from November to May in the cropping season of 2016E.C to evaluate the performance of Temsa small scale irrigation scheme. Both internal and external indicators were considered for evaluation. The internal indicator efficiencies such as conveyance, application, storage, distribution uniformity, and deep percolation ratio and the external indicators such as agricultural output, water supply, water delivery capacity, physical, and economic and financial indicators were evaluated. The result reveals that, the average conveyance efficiency of the main, secondary, and tertiary canals were 79.6%, 85.6%, and 84.7%, respectively. The scheme has on average application efficiency (Ea), storage efficiency, deep percolation ratio, and distribution uniformity of 40.87%, 78.04%, 59.70%, and 93.33%, respectively. The poor Ea and low conveyance efficiency of the canal affected the overall scheme performance. The result reveals that, the overall efficiency of the scheme was 23.19%. The four basic agricultural output indicators of the scheme such as output per unit irrigated area, output per unit command area, output per unit irrigation diverted, and output per unit water consumed were 4,738.58 US$/ha, 1,176.08 US$/ha, 1.16 US$/m³, and 0.89 US$/m³, respectively. This shows that, the command area was beneficial and was giving a revenue for the farmers at the cropping season. The relative irrigation supply and the water delivery capacity of the canal were 2.37 m³ and 83%, respectively. In the current study, the irrigation ratio and the sustainability of the irrigated area were 0.25 and 0.43, respectively. The irrigation ratio was low due to the designing problem. Availability of water throughout the year and market accessibility near the scheme were the advantage of the scheme that encourage the farmers. However, the input costs were affecting the return obtained from the product. Hence it is better to provide access to credit for the sustainable production and improve the farmers income.

Groundwater is an invaluable natural resource that sustains human life and supports the economic development of nations. However, its unsustainable utilization has emerged as a critical issue, particularly in developing countries. This study investigates the groundwater potential of the Chemoga watershed to address these challenges. Conventional groundwater assessments have typically relied on labor-intensive and time-consuming field surveys, which are resource-demanding and often fail to provide accurate estimates due to the inherent complexity of groundwater systems. In response, this research utilizes geospatial and analytic hierarchy process (AHP) techniques to assess groundwater potential in the Chemoga Watershed, aiming to overcome these challenges. Eight critical biophysical and environmental factors: geology, slope, rainfall, land use/land cover (LULC), soil type, elevation, lineament density, and drainage density were selected for analysis using Saaty’s AHP methodology. Data was gathered from satellite imagery, existing thematic maps, local water offices, and national meteorological agencies. The integration of these thematic maps was performed through a weighted overlay analysis using ArcGIS 10.8, which resulted in the delineation of groundwater potential zones (GWPZ). The model was validated by cross-referencing the generated GWPZ with existing data from dug wells and boreholes. The results reveal five groundwater potential zones: very high (0.73%), high (24.39%), moderate (43.38%), poor (31.25%), and very poor (0.25%). The most suitable zones are in the south, southeast, and southwest of the watershed, particularly near Debre Markos Town. These high-potential zones were validated with a significant 81.5% match to ground truth data from shallow wells. The findings of this study provide crucial insights for decision-makers, enabling the formulation of more effective groundwater management strategies. By identifying cost-effective and suitable well sites, this research contributes to ensuring a sustainable water supply for Debre Markos Town.

Monitoring soil erosion is crucial for soil conservation policies, especially in tropical regions that are prone to water erosion. A 2-year field study was conducted to assess the impact of simple engineering approaches and poultry manure application on soil loss, soil physical properties, maize yield, and economic benefit in Southwest Nigeria. The experiment was a 4 × 2 factorial arrangement with three replications. The treatments included four engineering approaches (surface mat, silt fencing, furrow dike, and no approach [control]) and two poultry manure application rates at 0 and 20 t ha⁻¹. Annual soil loss was higher under the control (6.22–8.01 Mg ha⁻¹ year⁻¹). The combination of engineering approaches with poultry manure at 20 t ha⁻¹ significantly (p ⩽ .05) reduced soil loss by 9.7% to 85.4% compared to control. Engineering approaches and poultry manure application did not significantly improve soil physical properties; however, saturated hydraulic conductivity was highest under surface mat combined with poultry manure at 20 t ha⁻¹ in both years. Maize yield increased by 27.7% under surface mat compared to control, while an additional grain yield of 0.14 Mg ha⁻¹ was obtained for 20 t ha⁻¹ poultry manure over 0 t ha⁻¹. Soil loss was negatively and significantly correlated with grain yield. The results suggest that integrating surface mats with poultry manure can be effective in controlling soil loss, enhancing soil properties, and improving maize yield.

Rapid population growth and increased use of agricultural technology have exacerbated agrarian problems. While mechanization has improved agricultural production, the use of heavy machinery for planting, irrigation, and harvesting has resulted in soil compaction. Soil compaction reduces pore space and increases soil bulk density, which hinders plant growth. Globally, automated agriculture has reduced crop production by more than 50%. In developing countries, grazing animals in crop fields increases soil compaction. Soil compaction hinders root penetration, nutrient absorption, and water infiltration, increasing the risk of soil erosion and runoff. The study investigates novel ways to reduce soil compaction, namely the utilization of nanoparticles (NPs) and nanotechnology (NT). NPs have unique qualities that can improve the mechanical properties of soil, increase its strength, and minimize compaction. Some of the NPs such as Carbon nanotubes, nanolites, nanosilica, and nanoclay have been demonstrated to increase soil fertility, water retention, and structural stability. NPs can reduce environmental pollutants while improving soil quality. However, questions about their long-term biodegradability, ecological toxicity, and health effects require further investigation. The study also addressed how NPs affect the environment and human health. Their small size raises concerns about potential exposure and toxicity to individuals and ecosystems. The paper also briefly discusses the economic and regulatory considerations related to the production, use, and disposal of NPs, emphasizing the need for comprehensive legislation, environmental impact studies, and stakeholder involvement in decision-making. Although NPs offer promise for sustainable agriculture practices, more research is necessary to optimize their use and ensure long-term safety, as well as to gain a better understanding of their unique interactions with soil physics.

Graphical Abstract

(Some icons created in BioRender. Alkhaza’leh, H. (2024) https://BioRender.com/b61r626).