Sá Júnior JPM e, Uchôa BF, Skogley EO. Additions to the characterization and mapping of soils deficient in phosphorus and potassium, for corn, in the physiographic region of Northeast Brazil. PAB [Internet]. 2014 Apr. 15 [cited 2026 Aug. 6];5(1):351-7. Available from: https://apct.sede.embrapa.br/pab/article/view/17755