L. F. Zica and P. E. Sonnenberg, “INFLUENCE OF AMMONIACAL FERTILIZERS IN THE MAIN ROOT BRANCHING OF CARROT (Daucus carota L.)”, Pesq. Agropec. Trop., vol. 1, no. 1, pp. 22–26, Sep. 2007, doi: 10.5216/pat.v1i1.1657.