Melo AAB de, Valladares GS, Ceddia MB, Pereira MG, Soares I. Spatial distribution of organic carbon and humic substances in irrigated soils under different management systems in a semi-arid zone in Ceará, Brazil. Semina: Ciênc. Agrár. [Internet]. 2016 Aug. 30 [cited 2026 Jun. 18];37(4):1845-56. Available from: https://www.ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22377