Resumo

GARCIA JUAREZ, Hugo Daniel et al. Effectiveness of three doses of nitrogen in two sowing densities of starchy corn (Zea mays L.). Rev. Inv. Cs. Agro. y Vet. [online]. 2024, vol.8, n.24, pp.691-706.  Epub 20-Set-2024. ISSN 2664-0902.  https://doi.org/10.33996/revistaalfa.v8i24.295.

Adequate nitrogen (N) fertilization allows a better economic return that is evident in crop quality and production. Corn farmers need to adjust N doses to planting densities to obtain the highest crop productivity and less adverse effects to the environment; therefore, the objective of this research was to determine the effectiveness of three N doses in two planting densities of starchy corn (Zea mays L.), in Cieneguillo Centro Sullana, Piura region, Peru. An evaluative research was carried out with an experimental design of Randomized Complete Blocks (DBCA) with a factorial arrangement of 3x2, with four replications, for a total of 24 treatments. The independent variables or factors were constituted by the concentration of nitrogen in the form of urea (N1:100, N2:150 and N3:200 kg/ha) and planting density, D1: 75,000 and D2: 9,3750 corn plants per hectare (p/ha). The dependent variable or response was crop productivity, which was measured through the characteristics of crop yield: ear length and diameter, weight of 100 grains and plant height. It can be highlighted as a result that the combination of nitrogen concentration factors of 200kg/ha and density of 93750 p/ha obtained the highest yield in terms of ear length and diameter, 100-grain weight and plant height.

Palavras-chave : Seeding density; Nitrogen dosage; Starchy corn; Zea mays crop productivity; Zea mays crop yield.

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