Resumo

AGUILAR-CARPIO, Cid; ESCALANTE-ESTRADA, José Alberto Salvador; AGUILAR-MARISCAL, Immer  e  PEREZ-RAMIREZ, Adriana. Growth, performance and profitability of VS-535 corn based on biofertilizer and nitrogen. Ecosistemas y recur. agropecuarios [online]. 2017, vol.4, n.12, pp.475-483. ISSN 2007-901X.  https://doi.org/10.19136/era.a4n12.1000.

The objective of the study was to determine the effect of biofertilizer and nitrogen on the synthetic variety of VS-535 corn, on the occurrence of phenological phases, growth analysis, performance, components, wáter use effciency, nitrogen content and profitability. The sowing was performed on July 10, 2012, the treatments were the inoculation of biofertilizer and the application of 0, 80, and 160 kg ha-1 of nitrogen. The number of leaves and leaf area were counted, calculating the index (LAI) and leaf area duration (TLAD). The dry matter (DM) content was also determined, as well as the crop growth rate and the net assimilation rate was also evaluated. On physiological maturity, the dry matter (DM) content (DM) and grain performance (GP) were evaluated; the effciency in the use of water and nitrogen was calculated, and an economic analysis was performed. It had the highest LAI and TLAD with 160 kg ha-1 of nitrogen.For DM, EUA, EAN, , while the older were with biofertilizer and nitrogen at 80 and 160 kg ha-1.For GP, the highest response was found with biofertilizer and nitrogen at 160 kg ha-1, which generated the highest profitability of the crop.

Palavras-chave : Leaf area; phenology; grain; nutrition; synthetic variety.

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