_____________________________________________________________________________________________________ *Corresponding author: E-mail: lucarneiromaciel@gmail.com; Annual Research & Review in Biology 35(6): 99-108, 2020; Article no.ARRB.58902 ISSN: 2347-565X, NLM ID: 101632869 Agronomic Performance of Corn Cultivars as a Function of Phosphorus Use Lucas Carneiro Maciel 1* , Weder Ferreira dos Santos 2 , Joênes Mucci Peluzio 3 , Osvaldo José Ferreira Junior 3 , Adriano Silveira Barbosa 3 , Rafael Marcelino da Silva 1 , Layanni Ferreira Sodré 1 and Magno De Oliveira 4 1 Department of Agronomy, Federal University of Tocantins, Gurupi, Tocantins, Brazil. 2 Department of Bioprocess Engineering and Biotechnology, Federal University of Tocantins, Gurupi, Tocantins, Brazil. 3 Department of Plant Production, Federal University of Tocantins, Gurupi, Tocantins, Brazil. 4 Department of Biotechnology, University of Vale do Taquari, Lajeado, Rio Grande do Sul, Brazil. Authors’ contributions This work was carried out in collaboration with all authors. Authors LCM, WFS and JMP designed the study and performed the analysis. Authors OJFJ, ASB, RMS and LFS managed the study and helped in the interpretation of the results. Author MO managed the literature searches. All authors read and approved the final manuscript. Article Information DOI: 10.9734/ARRB/2020/v35i630241 Editor(s): (1) Dr. Paola Angelini, University of Perugia, Italy. Reviewers: (1) D. V. Naveen, College of Sericulture Chintamani, India. (2) Ratnakar M. Shet, College of Horticulture, Sirsi. University of Horticultural Sciences, India. Complete Peer review History: http://www.sdiarticle4.com/review-history/58902 Received 02 May 2020 Accepted 08 July 2020 Published 24 July 2020 ABSTRACT Aims: The research was carried out to evaluate the agronomic performance of corn cultivars in contrasting phosphorus environments in the state of Pará, Brazil. Study Design: The experimental design was randomized blocks with ten treatments and three replications. The treatments were composed of ten cultivars: AG 1051, AG 8088PRO2, BR 206, BRS 3046, PR 27D28, 2B655PW, AL BANDEIRANTE, ANHEMBI, CATIVERDE 02 and ORION Place and Duration of Study: In the 2017/18 crop, two competition trials of corn cultivars were carried out at Sítio Vitória, municipality of Santa Maria das Barreiras, state Pará, Brazil. Methodology: Two competition trials of corn (Zea mays L.) cultivars were carried out under contracting conditions of phosphorus: high P (100 kg ha -1 of P 2 O 5 ) and low P (50 kg ha -1 of P 2 O 5 ), using simple superphosphate (18% P 2 O 5 ) as the source. The agronomic efficiency of phosphorus Original Research Article