Intercropping systems of corn and forage grasses with application of low mesotrione herbicide rates

Núbia Maria Correia; Ramon Americano do Brazil  Lenza

doi:10.1590/1983-21252024v3712520rc

Authors

Núbia Maria Correia Brazilian Agricultural Research Corporation, Embrapa Cerrados, Brasília, DF, Brazil https://orcid.org/0000-0002-5045-9798
Ramon Americano do Brazil Lenza Universidade de Brasília, Brasília, DF, Brazil https://orcid.org/0009-0005-7414-6058

DOI:

https://doi.org/10.1590/1983-21252024v3712520rc

Keywords:

Congo grass. BRS Tamani. BRS Zuri. Green cover. Weed management.

Abstract

Sowing forage grass species of the genera Urochloa and Panicum simultaneously with corn can hinder crop grain yield, requiring the application of low herbicide rates for suppressing their growth and preventing potential competition with corn plants. Therefore, the objective of this study was to evaluate the use of low rates of the herbicide mesotrione for inhibiting the growth of forage grass species (Urochloa ruziziensis and Panicum maximum, cultivars BRS Tamani and BRS Zuri) sown simultaneously with corn crop, as well as the recovery capacity of these grasses. Two experiments were installed, as first and second crop seasons, in a randomized experimental block design with four replications, using a 3×4 factorial arrangement and three control treatments with corn alone. Each of the three forage grasses was sown simultaneously with corn and subjected to post-emergence application of four mesotrione rates (0, 48, 96, and 144 g ha^-1) with atrazine (1.25 kg ha^-1). Weeds, forage grasses, and corn plants were evaluated. BRS Tamani was the most tolerant forage to mesotrione, while BRS Zuri was the most sensitive. The application of mesotrione + atrazine in the corn-forage grass intercropping system contributed to weed control. The tested forage grasses did not affect corn grain yield in the first or second crop season, even with no herbicide application.

Downloads

Download data is not yet available.

References

ALMEIDA, R. E. M. et al. Corn yield, forage production and quality affected by methods of intercropping corn and Panicum maximum. Pesquisa Agropecuária Brasileira, 52: 170-176, 2017.

ADAMI, P. F. et al. Plantas de cobertura nas entressafras soja-trigo e soja-soja. Brazilian Journal of Development, 6: 16551-16567, 2020.

CARDOSO, M. R.; MARCUZZO, F. F.; BARROS, J. R. Classificação climática de Köppen-Geiger para o estado de Goiás e Distrito Federal. Acta Geográfica, 8: 40-55, 2014.

CHAHAL, P. S.; JUGULAM, M.; JHALA, A. J. Basis of atrazine and mesotrione synergism for controlling atrazine- and HPPD inhibitor-resistant Palmer Amaranth. Agronomy Journal, 111: 3265-3273, 2019.

CHHOKAR, R. S. et al. Mesotrione and atrazine combination to control diverse weed flora in corn. Indian Journal of Weed Science, 51: 145-150, 2019.

CORREIA, N. M. Chemical and cultural management strategies for glyphosate resistant sourgrass in central Brazil. Pesquisa Agropecuária Brasileira, 58: e02900, 2023.

CRUVINEL, A. G. et al. Effects of herbicide underdoses on the vegetative development of Panicum maximum cultivars. Científica, 49: 121-127, 2021.

DAN, H. A. et al. Supressão imposta pelo mesotrione a Brachiaria brizantha em sistemas de integração lavoura-pecuária. Planta Daninha, 29: 861-867, 2011.

DIAS, M. B. D. E. C. et al. Brachiaria and Panicum maximum in an integrated crop-livestock system and a second-crop corn system in succession with soybean. The Journal of Agricultural Science, 158: 206-217, 2020.

GARCIA, C. M. P. et al. Desempenho agronômico da cultura do milho e espécies forrageiras em sistema de Integração Lavoura-Pecuária no Cerrado. Ciência Rural, 43: 589-595, 2013.

GHENO, E. A. et al. Herbicides to ruzigrass suppression in intercropping with corn. Weed Control Journal, 20: e202100736, 2021.

JAKELAITIS, A. et al. Manejo de plantas daninhas no consórcio de milho com capim-braquiária (Brachiaria decumbens). Planta Daninha, 22: 553-560, 2004.

MARTINS, D. A. et al. Intercropping between corn and Urochloa brizantha managed with mesotrione underdoses. Planta Daninha, 37: e019186923, 2019.

MATIAS, M. L. et al. Uso de subdoses de glyphosate na supressão de espécies forrageiras consorciadas com milho. Científica, 47: 380-387, 2019.

MATTE, W. D. et al. Eficácia de [Atrazine + Mesotrione] para o controle de plantas daninhas na cultura do milho. Revista Brasileira de Herbicidas, 17: e587, 2018.

OGLIARI, J. et al. Análise do perfil eletroforético de proteínas citoplasmáticas para verificação do processo de desintoxicação do herbicida mesotrione em plantas de Zea mays. Planta Daninha, 32: 161-172, 2014.

OLIVEIRA NETO, A. M. et al. Modalidades de aplicação e associações de herbicidas no controle de plantas daninhas em milho em espaçamento convencional e reduzido. Semina: Ciências Agrárias, 32: 81-92, 2011.

PITELLI, R. A.; PITELLI, R. L. C. M. Biologia e ecofisiologia das plantas daninhas. In: VARGAS, L.; ROMAN, E. S. (Eds.). Manual de manejo e controle de plantas daninhas. Passo Fundo, RS: Embrapa Trigo, 2008. v.1, cap.1, p. 11-38.

RODRIGUES, B. N.; ALMEIDA, F. L. S. Guia de herbicidas. 7. ed. Londrina, PR: Edição dos autores, 2018. 764 p.

SANTOS, H. G. et al. Brazilian Soil Classification System. 5. ed. Brasília, DF: Embrapa Solos, 2018. 356 p.

SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas. Procedimentos para instalação, avaliação e análise de experimentos com herbicidas. Londrina, PR: SBCPD. 1995. 42 p.

SILVA, C. H. L. et al. Use of glyphosate in the management of Panicum maximum cv. BRS Zuri intercropped with corn. Revista Brasileira Engenharia Agrícola Ambiental, 27: 795-802, 2023.

SOUZA, S. S. de et al. Consorciação com Crotalaria spectabilis e Urochloa ruziziensis reduzem o desempenho agronômico de milho? Pesquisa Agropecuária Tropical, 52: e70513, 2022.