Short communication : Phosphorus and nitrogen fertilization in sweet corn (Zea mays L. var. saccharata Bailey)

Abstract

To evaluate the effect of combining different levels of P and N fertilisation on yield and uniformity of a sweet corncrop hybrid Freshy, a factorial trial combining three levels of N (0, 100 and 200 kg of N ha-1) and three levels of P (0,40 and 80 kg of P2O5 ha-1) was carried out. Total leaf number, height up to ear insertion, leaf width and length, leaf area,plant height, stem diameter, biomass production, shoot dry matter content, harvest index and yield with and withouthusk, husk proportion and ear diameter were measured. Significant differences in leaf width and length, leaf area, plantheight, ear diameter, biomass production and yield with and without husk were observed with N fertilisation. On theother hand, significant differences in leaf length, unit leaf area, ear diameter and biomass production were observedwith P fertilisation. A N x P interaction was only observed for shoot dry matter content