Abstract

PACHECO-SANGERMAN, Fresia; PRADO-HERNANDEZ, Víctor; MALDONADO-TORRES, Ranferi  and  ROBLEDO-SANTOYO, Edmundo. Soil and foliar nutritional diagnosis in corn cultivation. Rev. Mex. Cienc. Agríc [online]. 2022, vol.13, n.6, pp.1079-1090.  Epub Feb 24, 2023. ISSN 2007-0934.  https://doi.org/10.29312/remexca.v13i6.2691.

It is important to define optimal fertilization doses for proper management of crop nutrition and significant improvement of harvest yield and quality. The present work was carried out in 2019 in the municipality of Texcoco, Estado de México. With the aim of evaluating five doses of fertilization based on the diagnosis of soil fertility so that through three foliar diagnostic methodologies determine the nutritional balance. The treatments evaluated were (T0: absolute control, T1: producer dose, T2: 0.5 of the optimal dose, T3: optimal dose, T4: 1+0.5 of the optimal dose) in two varieties of corn (Estrella and Celeste). The results obtained showed that the soil is clayey, with a neutral pH, very low in Cu, low in Fe and Mn and medium in N, Zn and CEC, high in organic matter and very high in P, K, Ca, Mg and B. The diagnosis made with the three interpretation methodologies showed that nutrients N and Zn were the most deficient, while Ca and B were present at high levels. The concentration of soil nutrients and the Kenworthy foliar diagnosis showed a direct correlation for the elements Cu and Mn, while P, K, Ca, Mg and B were determined as medium and high in both the soil and the plant. For the DRIS diagnosis, medium or sufficient to high levels of Ca, Mg and B were determined both in the soil and in the plant. Finally, the concentration of Cu in the soil and plant was low, while that of B was high.

Keywords : grain yield; nutritional diagnosis; plant nutrition.

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