PRODUCTION AND PROFITABILITY OF LANDRACE BLUE MAIZE UNDER DIFFERENT PLANT DENSITIES AND WATER REGIMENS

Reyna Armendariz-Beltran, Eleazar Lugo-Cruz, Rafael Ruíz-Hernández, Francisco Zavala-García, Nelly Cristina Ramírez-Grimaldo

Abstract


Background: It is necessary to increase maize production due to the increase in global food demand. Producers in Mexico prefer to grow native varieties of maize, which have a wide genetic diversity that has not been fully studied. These native maize are being lost due in part to their low yields, as well as their low or no profitability. Despite this, in this germplasm it is possible the presence of genotypes that show high grain production and economic gains. Increasing plant density can be a viable strategy that contributes to improving the production systems of these native maize. Objective: To analyze the agronomic behavior and profitability of blue native maize genotypes in two population densities and two water regimes. Methodology: The study was carried out in the spring summer 2022 cycle in Nuevo León, Mexico (24°19'11.4"N, 99°56'34.8"W, 1980 m.a.s.l.). The treatments were the combination of four genotypes (Mimbres, Ascensión, Siberia and a Hybrid as a control), two water regimes (irrigated and rainfed) and two population densities (62,500 and 83,333 plants ha-1), which were distributed in a random complete block design with split-split plot design. Analysis of variance, Pearson correlation and principal components were carried out to understand the behavior and relationship between variables. Results: Grain yield was 38% higher in irrigation compared to rainfed. Increasing the density to 83,333 plants ha-1 also contributed to increasing grain yield and economic profitability, only in native maize. The number of grains per m2 and grain weight per ear were the components that were mostly associated with the benefit-cost ratio and grain yield. Implications: The native maize studied are important genetic resources with a favorable response to high plant density, therefore, increasing the density to 83,333 plants ha-1 is a strategy that could be explored to increase grain production and profitability of native maize, in addition, this proposal could be more easily adopted by producers, since it would not significantly affect their production cost. Conclusions: It was feasible to cultivate native maize at a density of 83,333 plants ha-1 both under irrigation and rainfed conditions, since only with this density and such maize genotypes was it possible to obtain the highest grain yield and economic gains.

Keywords


pigmented native maize; grain yield and its components; cost-benefit ratio.

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References


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URN: http://www.revista.ccba.uady.mx/urn:ISSN:1870-0462-tsaes.v27i3.56455

DOI: http://dx.doi.org/10.56369/tsaes.5645

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Copyright (c) 2024 Reyna Armendariz-Beltran, Eleazar Lugo-Cruz, Rafael Ruíz-Hernández, Francisco Zavala-García, Nelly Cristina Ramírez-Grimaldo

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