The upland rice is grown in most Brazilian
states. However, in many of them the yield obtained is low. The choice of
cultivar more suited to a particular environment can contribute to increased
productivity of this crop. This research aimed to evaluate the performance of a
hybrid cultivar of upland rice (Ecco) and five conventional cultivars (BRS Monarca,
BRS Primavera, AN Cambará, BRS Sertaneja and BRS MG Curinga) in two
environments (Vilhena and Cerejeiras). The tests were conducted in the
agricultural year 2010/2011. We evaluated the following characteristics:
tillering, panicle number per unit area, number of filled grains per panicle
sterile, mass of grains per panicle, 1000 grain weight, grain yield (kg·ha-1) and whole grain yield. There was no cultivar
x environment interaction for all traits. Greater tillering, higher panicle
number per area, higher productivity and yield of whole grains in the
municipality of Cerejeiras were observed, while the highest number of sterile
grains per panicle was obtained in Vilhena. The hybrid Ecco highlighted in relation to all other cultivars is in
relation to tillering, panicle number per area and grain yield. The
municipality of Cerejeiras is the most suitable for the cultivation of upland
Cite this paper
Soares, E. , Fernandes, R. , Londero, L. , dos Santos, D. , Sampaio Corrêa, S. , Sampaio Corrêa, E. , dos Santos, R. , Gomes, A. , Galon, L. , Pires, F. and Gonçalves, R. (2014) Agronomic Performance of Cultivars of Upland Rice in the Southern of the Region of Rondônia, Brazil. Agricultural Sciences
, 513-518. doi: 10.4236/as.2014.56053
 Kennedy, A.C. and Smith, K.L. (1995) Soil Microbial Diversity and the Sustainability of Agricultural Soils. Plant and Soil, 170, 75-86. http://dx.doi.org/10.1007/BF02183056
 Barberena, D.S., Medeiros, R.D. and Barbosa, G.F. (2011) Growth and Productivity of Irrigated Rice in Response to Different Doses of Phosphorus and Potassium in Lowland Soil of First Year in the State of Roraima. Science and Agrotechnology, 35, 462-470. http://dx.doi.org/10.1590/S1413-70542011000300004
 Barreto, J.H.B., Soares, I., Pereira, J.A., Bezerra, A.M.E. and Deus, J.A.L. (2012) Yield Performance of Upland Rice Cultivars at Different Rates and Times of Nitrogen Application. Brazilian Journal of Soil Science, 36, 475-483. http://dx.doi.org/10.1590/S0100-06832012000200017
 CONAB—National Supply Company (2013) Brasilian Crop Assessment: Grains, Twelfth Assessment, September. http://www.conab.gov.br/OlalaCMS/uploads/arquivos/13_10_16_14_32_01_boletim_ingles_-_setembro_2013.pdf
 Guimarães, C.M. (2006) Rice Cultivation in Brazil. 2nd Edition. Embrapa Arroz e Feijão, Santo Antônio de Goiás.
 Gitti, D.C., Arf, O., Portugal, J.R., Corsini, D.C.D.C., Rodrigues, R.A.F. and Kaneko, H. (2013) Cover Crops, Nitrogen Rates and Seeds Inoculation with Azospirillum Brasilense in Upland Rice under No-Tillage. Bragantia, 71, 509-517. http://dx.doi.org/10.1590/S0006-87052013005000002
 Menezes, V.G. and Ramirez, H.B. (2003) Management Strategies Aimed at Increasing the Competitiveness and Sustainability in Irrigated Rice Production. In: National Congress of Rice Production Chain/VII Meeting of Rice Crop Research, EMBRAPA, Santo Antônio de Goiás, 2003, 280 p.
 Pires, L.P.M., Peluzio, J.M., Cancellier, L.L., Ribeiro, G.R., Colombo, G.A. and AfFerri, R.S. (2012) Performance of Soybean Genotypes in Central-South Region on Tocantins State, Crop Season 2009/2010. Bioscience Journal, 28, 214-223.
 Regitano Neto, A., Ramos Júnior, E.U., Gallo, P.B., Freitas, J.G. and Azzini, L.E. (2013) Behavior of Upland Rice Genotypes in the State of São Paulo, Brazil. Agronomic Science Magazine, 44, 512-519. http://dx.doi.org/10.1590/S1806-66902013000300013
 Furlan, D.N., Nunes, D.D., da Silva, J.M., Lobato, L.C.H., Lima, T.R., de Assunção, A.G. and Pinto, G.C. (2010) Climate and Soybean Yields in the Municipalities of Cherry and Vilhena Located in the Southern Cone of Rondônia. http://www.cbmet.com/cbm-files/14-9e178324fe343881898c4f98651b1a7d.pdf
 Pimentel-Gomes, F. (2009) Statistics Course Experimental. 15th Edition. FEALQ, Piracicaba.
 Yuan, L., Yang, Z. and Yang, J. (1994) Hybrid Rice in China. In: Virmani, S.S., Ed., Hybrid Rice Technology: New Developments and Future Prospects, International Rice Research Institute, Los Baños, Philippines, 143-147.
 Silva, V.A.C., Silva, E.F. and Tabosa, J.N. (2010) Performance of Upland Rice Genotypes in “Zona da Mata” of Pernambuco State. Brazilian Journal of Agricultural and Environmental Engineering, 14, 1030-1037. http://dx.doi.org/10.1590/S1415-43662010001000002
 YOSHIDA, S. (1981) Fundamentals of Rice Crop Science. IRRI, Los Baños.
 Lopes, A.S. and Guimarães Guilherme, L.R. (2004) Interpretation of Analysis of Soil. Concepts and Applications, National Association for Diffusion of Fertilizers (ANDA). http://www.anda.org.br/multimidia/boletim_02.pdf
 Raij, B.V., Cantarella, H., Quaggio, J.A. and Furlani, A.M.C. (1997) Lime and Fertilizer Recommendations for the State of São Paulo. 2nd Edition, Instituto Agronômico, Campinas.
 CONAB—National Supply Company (2011) Brasilian Crop Assessment: Grains, Twelfth Assessment, June. http://www.conab.gov.br/OlalaCMS/uploads/arquivos/11_07_15_11_03_18_boletim_julho_-_2011..pdf
 Soares, E.R., Baseggio, E.A., Londrero, L.S., Correa, S.C.S., Rossini, V.P., Zo-linger, I.T., Klahold, C.A. and Galon, L. (2010) Production and Productivity Components of Hybrid Rice Dry Compared to Conventional Three Cultivars. Agricultural Act, 59, 435-441.
 Vieira, N.R.A. and Carvalho, J.L.V. (1999 Technological Quality. In: Veira, N.R.A., Santos, A.B. and Santana, E.P., Eds., Rice Cultivation in Brazil, Embrapa Arroz e Feijão, Santo Antonio de Goiás, 582-598.