Koronivia grass (Urochloa humidicola) interference on nutrient content and accumulation of maize aerial part
DOI:
https://doi.org/10.33448/rsd-v14i8.49362Keywords:
Urochloa humidicola, Weed, Interference, Nutrients, Zea mays.Abstract
The maize-Urochloa intercropping is used to recovery degraded pastures and straw formation and soil cover in a no-tillage system, providing financial and environmental benefits. However, the forage can negatively impact the crop through competition for nutrients and can impair corn crop performance, thus compromising the success of the intercrop. Thus, the objective was to estimate the interference of koronivia grass (Urochloa humidicola), BRS Tupi, in maize (Zea mays), BRS Saracura, by quantifying the maize aerial dry mass matter (MADMM) and the nutrient (nitrogen, phosphorus, potassium, calcium, magnesium and sulfur) contents and accumulations in the MADMM. The experiment was conducted in a greenhouse in a completely randomized design with four replicates, with treatments consisting of five different infestation densities of koronivia grass: zero, one, two, three, and four plants/pot. Increasing infestation density significantly reduced MADMM, nitrogen, potassium, magnesium, and sulfur contents, and all macronutrientes accumulation. Phosphorus and calcium levels in MADMM were not affected by koronivia grass interference.
References
Almeida, M. O. et al. (2015). Interação entre volume de vaso e competição com plantas daninhas sobre o crescimento da soja. Revista Ceres, 62, 524-530.
Cardoso, J. A.; Jiménez, J. C. & Rao, I. M. (2014). Waterlogging-induced changes in root architecture of germplasm accessions of the tropical forage grass Brachiaria humidicola. AoB PLANTS, 6.
Carvalho, F. P. et al. (2011). Alocação de matéria seca e capacidade competitiva de cultivares de milho com plantas daninhas. Planta Daninha, 29, 373-382.
Cohn, A. S. et al. (2014). Cattle ranching intesification in Brazil can reduce global greenhouse gas emissions by sparing land from deforestation. PNAS, 111, 7236-7241.
Concenço, G. et al. (2012). Weeds infestation in corn intercropped with forages at different planting densities. Planta Daninha, 30, 721-728.
Cortner, O. et al. (2019). Perceptions of integrated crop-livestock systems for sustainable intensification in the brazilian Amazon. Land Use Policy, 82, 841-853.
Cruz, C. D. (2006). Programa Genes: estatística experimental e matrizes. 285 p.
Embrapa. Empresa Brasileira de Pesquisa Agropecuária. (2009). Manual de análises químicas de solo, plantas e fertilizantes. 2 ed. 627p.
Faria, R. M., Barros, R. E., & Tuffi Santos, L. D. (2014). Weed interference on growth and yield of transgenic maize. Planta Daninha, 32, 515-520.
Feitoza, R. B. B. et al. (2020). Evaluation of the phytotoxicity of Urochloa humidicola roots by bioassays and microscopic analysis. Characterization of new compounds. Journal of Agricultural and Food Chemistry, 68. 4851-4864.
Feller, A. A. (2023). Produtividade da Urochloa humidicola em diferentes doses de nitrogênio e potássio na região do Vale do Jamari, Rondônia. Research, Society and Development, 12, e18812842993-e18812842993.
Frandoloso, F. et al. (2019). Competition of maize hybrids with alexandergrass (Urochloa plantaginea). Australian Journal of Crop Science, 13, 1447-1455.
Freitas, M. A. M. et al. (2015). Levels of nutrients and grain yield of maize intercropped with signalgrass (Brachiaria) in different arrangements of plants. Planta Daninha, 33, 49-56.
Freitas, M. A. M. et al. (2018). Biological attributes of soil cultivated with corn intercropped with Urochloa brizantha in different plant arrangements with and without herbicide application. Agriculture, Ecosystems & Environment, 254, 35-40.
Guarnieri, A. et al. (2019). Agronomic and productive characteristics of maize and Paiguas palisadegrass in integrated production systems. Semina: Ciências Agrárias, 40, 1185-1198.
Jiménez, J. D. L. C. et al. (2021). The barrier to radial oxygen loss impedes the apoplastic entry of iron into the roots of Urochloa humidicola. Journal of Experimental Botany, 72, 3279-3293.
Martins, C. D. M. et al. (2013). Consumo de forragem e desempenho animal em cultivares de Urochloa humidicola sob lotação contínua. Pesquisa Agropecuária Brasileira, 48, 1402-1409.
Mingotte, F. L. C. et al. (2020). Impact of crop management and no-tillage system on grain and straw yield of maize crop. Cereal Research Communications, 48, 399-407.
Pereira, F. J. et al (2008). Evolução da anatomia radicular do milho 'Saracura' em ciclos de seleção sucessivos. Pesquisa Agropecuária Brasileira, 43, 1649-1656.
Pereira A. S. et al. (2018). Metodologia da pesquisa científica. [free e-book]. Santa Maria/RS. Ed. UAB/NTE/UFSM.
Piano, J. T. et al. (2019). Decomposition and nutrients cycling of residual biomass from integrated crop-livestock system. Australian Journal of Crop Science, 13, 739-745.
Queiroz, R. F. et al. (2016). Maize intercropped with Urochloa ruziziensis under no-tillage system. Pesquisa Agropecuária Tropical, 46, 238-244.
Salton, J. C. et al (2014). Integrated crop-livestock system in tropical Brazil: toward a sustainable production system. Agriculture, Ecosystems & Environment, 190, 70-79.
Saraiva, F. M. et al. (2014). Root development and soil carbon stocks of tropical pastures managed under different grazzing intensities. Tropical Grasslands, 2, 254-261.
Sardana, V. et al. (2017). Role of competition in managing weeds: an introduction to the special issue. Crop Protection, 95, 1-7.
Schuster, M. Z. et al. (2016). Grazing intensities affect weed seedling emergence and the seed bank in a integrated crop-livestock system. Agriculture, Ecosystems & Environment, 232, 232-239.
Silva, D. V. et al. (2015). Produtividade e teor de nutrientes do milho em consórcio com braquiária. Ciência Rural, 45, 1394-1400.
Souza Filho, A. P. D. S.; Pereira, A. A. G. & Bayma, J. D. C. (2005). Aleloquímico produzido pela gramínea forrageira Brachiaria humidicola. Planta daninha, 23, 25-32.
Souza, V. S. et al. (2025). Maize-Urochloa grass intercropping: an option for improving sustainable agriculture in the brazilian savannah. Experimental Agriculture, 61, e17.
Swanton, C. J.; Nkoa, R.; Blackshaw, R. E. (2015). Experimental methods for crop-weed competition studies. Weed Science, 63, 2-11.
Villegas, D. M. et al. (2023). Phenotyping of Urochloa humidicola grass hybrids for agronomic and environmental performance in the Piedmont region of the Orinoquian savannas of Colombia. Grass and Forage Science, 78, 119-128.
Downloads
Published
Issue
Section
License
Copyright (c) 2025 José Roberto Antoniol Fontes, André Luiz Atroch, Ronaldo Ribeiro de Morais
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
1) Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
2) Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
3) Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
