Main Article Content
Aims: The objective of this study was to evaluate the best time for planting and nitrogen dose during the dry season that provides better yield to corn crop in the Alagoas Coastal Tablelands region.
Study Design: The experimental design was in randomized blocks, in the split plot scheme with four repetitions.
Place and Duration of Study: The experiment was developed at the Center of Agrarian Sciences of the Federal University of Alagoas in 2016.
Methodology: The plots consisted of 20 lines with seven meters in length and received the four sowing seasons (E1: 28/05/16, E2: 11/06/16, E3: 25/06/16, E4: 22/07/16). The subplots contained 5 lines of 7 meters each and received the nitrogen doses (0, 75, 150 and 225 kg ha-1). The variables analyzed were: Number of grains per ear (NGE), grain mass per ear (GME) and agricultural yield obtained from the weighing of all grains harvested in the useful area of each plot.
Results: The variables agricultural productivity and number of grains per ear of corn adjusted to the quadratic regression model, while for the mass of 1,000 grains the linear was better. Grain mass per cob, number of grains per cob, weight of 1,000 grains and yield are influenced by nitrogen rates. The E1 season was the one that provided the highest grain mass per turn (235 g), number of grains per ear (675) and agricultural yield (9.6 t ha-1). For the mass of 1,000 grains, season E2 obtained the highest result (263 g).
Conclusion: Maximum corn yield can be achieved by applying 209 kg ha-1 of N, which corresponds to a yield of 9.55 t ha-1 if planted until 06/11/16.
Demarchi Mr. Agricultural conjuncture analysis -Safra 2011/12 milho. Department of Agriculture and Supply Department of Rural Economy, Paraná; 2011.
(Accessed 5 Aug 2013)
Faostat - Food and Agriculture Organization of the United Nations Statistics Division; 2016.
(Accessed in 07/11/2016)
Nacional Companhia of Abastecimento - Conab. Brasília. V.5. vintage 2017/18 - N. 12 - Twelfth Crop Survey; 2018.
Silva EC, Buzetti S, Guimareses GL, Lazarini E, SA ME. Doses and timing of nitrogen application in no-tillage maize on Red Latosol. Brazilian Journal of Soil Science, Viçosa, C. 2005;29(3):353-362.
Souza JL, Moura Filho G, Lyra RFF, Teodoro I, Santos EA, Silva Neto J, Silva PRT, Cardim AH, Amorim EC. Precipitation and air temperature analysis in the tabuleiro costeiro de Maceió region. period 1972-2001. Brazilian Journal of Agrometeorology, Santa Maria, RS. 2004;12(1):131-141.
Cruz SCS, Pereira FRS, Bicudo SJ, Albuquerque AW, Santos JR, Machado CG. Nutrition of maize and Brachiaria decumbens intercropped in different tillage. Acta Scientiarum. Agronomy, Maringá, C. 2008;30(05):733-739.
Cruz JC, Filho IAP, Alvarenga PFRC, Neto MMG, Viana JHM, Oliveira MF, Matrangolo WJR, Filho MRA. Corn cultivation. Embrapa Corn and Sorghum Production Systems 2 ISSN 1679- 012X Electronic version - 6ª Edição Set; 2010.
Kunz JH, Bergonci JI, Bergamaschi H, Dalmago GA, Heckler BM, Comiran F. Use of solar radiation by maize under different soil tillage, spacing and water availability. Brazilian Agricultural Research. 2007;42: 1511-1520.
Souza JL, Anjos FA, Moura Filho G, Meira PR. Rainfall characteristic of the coastal board of Alagoas, period 1972-1996. In: Brazilian Congress of Meteorology, 10, 1998, Brasília. Anais. Brazilian Society of Meteorology; 1998.
Coelho to Mr. Nitrogen fertilization management in corn crop. Seven Ponds: Embrapa Corn and Sorgo; 2007. (Technical Circular, 96).
Thorntwaite CW, Mather J. Instructions and tables for computing potencial evapotranspiration and the water balance. Ceterton, NJ: Rexel Institute of Technology-Laboratory. (Publications in Climatogy). 1957;10(3):311.
Acessado EM 26/12/2016 Yates, R.A.The Environment for Sugarcane. Roma, FAO.
Pereira TOR. Simplifying the water balance of thornthwaite-mather agro-meteorology. Bragantia, Campinas. 2005;64(2):311-313.
Allen RG, Pereira LS, Raes D, Smuth M. Crop evapotranspiration: Guidelines for computing crop water requirements. Rome: FAO. Irrigation and Drainage Paper 56. 1998;301.
Magalhes PC, Durations FO Mr. Corn production physiology. Sete Lagoas: EMBRAPA-CNPS. (Embrapa-CNPMS, Circular Técnica, 76). 2006;10. Maldaner LJ, Horing K, Schneider JF, Frigo JP, Azevedo KD, Grzesiuck AE. Agroclimatic expression of cultural culture (Zea mays L.). Revista Brasileira de Energias Renováveis. 2014;3:13-23.
Oliveira AB, Gomes-Filho E. Germination and vigor of forage sorghum seeds under water and saline stress. Brazilian Journal of Seeds. 2009;31(3):048-056.
Khajeh-Hosseini M, Powell A, Bingham IJ. Interaction between salinity stress and seed vigor during germination of soybean seeds. Seed Science and Technology. 2003;31(3):715-725.
Maldaner J, Horing K, Schneider JF, Frigo JP, Azevedo KD, Grzesiuck AE. Agroclimatic requirement of maize crop (Zea mays L.). Brazilian Journal of Renewable Energy. 2014;3:13-23.
Claassen M, Shaw R. Water deficits effects on corn. II: Grain components. Agronomy Journal, Madison. 1970;62:652-655.
Ferreira HA, Souza A dos S, Sub ADA de, Souza A dos S, Maracajá PB. Components of produção and yield of maize subjected to nitrogen doses in semiarid Paraiban. Green Magazine, Mossoró – RN. 2010;5(4):90-96.
Soares MAS. Corn cultivation under different irrigation depths and nitrogen rates in Rio Largo, Alagoas. Master Thesis (Master Plant Production). Federal Universidade of Alagoas; 2019.
Souza JA, Buzetti S, Teixeira Filho MCM, Andreotti M, Sám E, Arf O. Nitrogen fertilization in the crop of irrigated off-season corn. Bragantia, Campinas. 2011;70(2):447-454.
Raasch H, Schoninger EL, Noetzold R, Vaz DC, Silva JD. Doses of nitrogen cover in second crop corn in Nova Mutum - MT. Cultivating Magazine to Know. 2016;9(4): 517-529.
Pavinato PS, Ceretta CA, Girotto E, Moreira ICL. Nitrogen and potassium in irrigated corn: Technical and economic analysis of fertilization. Rural Science, Santa Maria. 2008;38(2):358-364.
Amaral Filho JPR, Fornasieri Filho D, Farinelli R, Barbosa JC. Spacing, population density and nitrogen fertilization in corn crop. Brazilian Journal of Soil Science, Viçosa. 2005;29(3):467-473.
Barbosa WSS. Corn grown under different irrigation depths and nitrogen fertilization. Master Thesis (Master Plant Production). Federal Universidade of Alagoas; 2017.
Veloso ME da C, Duarte SN, Dourado Neto D, Miranda JH, Silva EC, Souza VF. Doses of nitrogen in maize crop in lowland soils under underground drainage system. Brazilian Journal of Corn and Sorghum. 2006;5(3):382-394.
Schussler JR, Westgate E. Maize Kernal set at low water potential. I. Sensitivity to reduced assimilates during early Kernal growth. Crop Science, Madison. 1991;31: 1189-1195.
Jensen ME. Summary and challengers. In: Conference Irrigation Scheduling. Chicago. Proceedings. St. Joseph: ASAE. 1981; 225.
Farinelli R, Lemos LB. Covered nitrogen in corn crop in conventional preparation and consolidated direct planting. Goiânia. 2012;42(1)6:3-70.
Lyra GB, Rocha AEQ, Lyra GB, Souza JL, Teodoro I. Maize growth and yield, submitted in doses of nitrogen in Alagoas Coastal Trays. Ceres Magazine, Viçosa. 2014;61(4):578-586.