University of Guilan Caspian Journal of Environmental Sciences 1735-3033 20 5 2022 12 01 Effects of nano-chelated micronutrients and seaweed on nutrients uptake and chemical traits of quinoa (Chenopodium quinoa Willd.) 985 989 6052 10.22124/cjes.2022.6052 EN Basim K. Hasan Faculty of Agricultural and Marshlands, University of Thi Qar, Iraq Haider Rezaq Leiby College of Agriculture, Al-Muthanna University, Iraq Nazar Al Ghasheem Faculty of Agricultural and Marshlands, University of Thi Qar, Iraq Journal Article 2022 12 25 The experiment was conducted in the fields of northern Nasiriya City, Iraq, in 2020 to study the effect of adding four concentrations (0, 1, 2, and 3 kg ha^-1) of chelate micronutrients fertilizer manufactured according to nanotechnology containing iron, zinc, manganese and boron with three concentrations (0, 1 and 2 kg ha^-1) of seaweed fertilizer containing 46% organic matter and 4% amino acids on nutrients uptake of NPK and chemical properties of quinoa, <em>Chenopodium quinoa</em> Willd. Randomized complete block design with three replications was used in the experiment. The results showed the best significant response once using the F₃ treatment (nano-chelated fertilizers containing nitrogen, phosphorous and potassium absorbed in the grains) with an increase of 12.86, 127.27 and 98.64% respectively compared to other treatments. In addition, F₃ treatment was recorded highest value (protein 17.01, ash 4.56 and fiber 2.23%), while F₂ exhibited superior values (fat 5.54 % and moisture 8.63%). Moreover, the results showed that S₂ treatment (seaweed) at 3 kg ha^-1 was superior in most of the studied traits except for moisture and carbohydrates which was higher in the control treatment (9.06 and 68.14%) respectively. https://cjes.guilan.ac.ir/article_6052_178dacbb630e2a7e3c64368f26788d77.pdf