A survey of irrigation water and soil quality that likely impacts paddy rice yields in Kilimanjaro, Tanzania

Abstract In this study, the impacts of irrigation water quality and soil characteristics on paddy rice yields were investigated. Standard spectroscopy spectrometry methods used to analyze irrigated samples. The had sodium adsorption ratio (SAR) values ranging from 0 3. corresponding electrical conductivity (EC) between 0.2 0.7 dS/m accounted for 14% all samples—posing slight moderate infiltration problem. Neither Na + nor Cl − levels high enough cause toxicity problems in water. For B, 54% samples found have whereas ~ indicated severe B bicarbonate, about 86 slight-to-moderate potential detrimental effect plant growth, respectively. All trace elements too low any harmful effect. Although EC, organic carbon (OC), pH favorable level, there standard deviation ( SD ) Fe Zn. mean value soils was 19.8 mg/kg, indicating signs Fe-deficiency. High also total N (TN) content studied soils. Furthermore, a K observed analyzed Appropriate fertilizer application improving nutrient deficiencies study area is highly recommended. on-farm management practices need be guided by scientific findings present as well other studies.