Optimizing maize planting density for enhanced economic returns.

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dc.contributorJOAO DE MENDONCA NAIME, CNPDIA; EDUARDO ANTONIO SPERANZA, CNPTIA; IVANI DE OLIVEIRA NEGRAO LOPES, CNPSO; CARLOS MANOEL PEDRO VAZ, CNPDIA; RICARDO YASSUSHI INAMASU, CNPDIA; AGROEVOX; JULIO CEZAR FRANCHINI DOS SANTOS, CNPSO.
dc.creatorNAIME, J. de M.
dc.creatorSPERANZA, E. A.
dc.creatorLOPES, I. de O. N.
dc.creatorVAZ, C. M. P.
dc.creatorINAMASU, R. Y.
dc.creatorNOGARA NETO, F.
dc.creatorFRANCHINI, J. C.
dc.date2026-05-18T13:49:18Z
dc.date2026-05-18T13:49:18Z
dc.date2026-05-14
dc.date2025
dc.date.accessioned2026-07-07T04:29:56Z
dc.descriptionAbstract: Variable rate seeding (VRS) can enhance profitability, but its adoption by small and medium-sized producers is limited. This work presents a practical on-farm methodology to determine economically optimal corn seeding rates, designed for direct use by farm managers. The methodology was applied in two commercial fields in Paraná State, Brazil. In Field A, four seeding rates were tested on two corn hybrids using a planter with a mechanical drive. In Field B, four management zones (MZs) were delineated using multiple data layers, and variable seeding rates were applied to assess spatially-differentiated responses. Results showed distinct responses between hybrids and MZs. In Field A, increasing the seeding rate by approximately 10% boosted yield by 7.9% for one hybrid but was detrimental to the other. In Field B, an economic analysis revealed that the profit-maximizing seeding rate varied by MZ: a 20% rate increase was optimal in MZ2 (+2.44% profit), while a 10% increase was optimal in MZ4 (+2.57% profit). The study demonstrates that this accessible, on-farm experimental approach allows growers to effectively customize seeding rates, optimizing resource use and profitability without requiring significant investment in specialized technology or expertise.
dc.descriptionEditores: Paulo Sergio de Paula Herrmann Junior, Henriette Monteiro Cordeiro de Azeredo, Maria Fernanda Berlingieri Durigan, Luís Henrique Bassoi. SIAGRO 2025.
dc.identifierIn: SIMPÓSIO NACIONAL DE INSTRUMENTAÇÃO AGROPECUÁRIA, 5., 2025, São Carlos. Anais [...]. São Carlos: Embrapa Instrumentação, 2025. p. 577-581.
dc.identifier2358-9132
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1186876
dc.identifier.urihttp://hdl.handle.net/123456789/463221
dc.languageeng
dc.rightsopenAccess
dc.subjectDensidade de plantio de milho
dc.subjectExperimentação on-farm
dc.subjectPopulação de sementes
dc.subjectSemeadura à taxa variada
dc.subjectOn-farm experimentation
dc.subjectSeed population
dc.subjectVariable rate seeding
dc.subjectMilho
dc.subjectAgricultura de Precisão
dc.subjectPrecision agriculture
dc.titleOptimizing maize planting density for enhanced economic returns.
dc.typeArtigo em anais e proceedings

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