Times of Application of Boron in Irrigated Rice Genotypes in Tropical Varzeas
Abstract
Boron is an important micronutrient for all vegetables, being part of several metabolic functions within cells. Rice stands out as a staple food for more than half the world’s population and requires small amounts of boron. The objective of this study was to evaluate the effect of boron application at different times in the culture of irrigated rice in the conditions of the floodplains in the Southwest of the State of Tocantins. The experiment was installed at Fazenda Santa Rita, municipality of Lagoa da Confusão-TO in the 2015/2016 harvest, in bands, with a randomized block design, in a 4 x 4 factorial scheme, with 4 repetitions. The dose of 3.0 kg ha −1 of boron was applied, in the form of borax, via leaf, in four seasons. WereFour lowland rice cultivars (IRGA-424, IRGA-424 RI, IRGA-425, and IRGA-426) were used. The characteristics evaluated were: plant height, number of panicles, spikelet sterility, the mass of one hundred grains, grain yield, whole grains, and grain yield. Boron resulted in higher productivity. The highest yields were achieved with borate fertilization at 60 and 75 days after emergence. The genotypes IRGA-424 RI and IRGA-425 proved to be more efficient in the use of boron, is recommended at any time of application of the micronutrient.References
. CORCIOLI, G.; BORGES, J.D.; JESUS, R.P. Deficiência de macro e micronutrientes em mudas maduras de Khaya ivorensis estudadas em viveiro. Cerne, v. 22, n. 1, p. 121-128, 2016. http://dx.doi.org/10.1590/01047760201622012085.
. XAVIER, C.V.; NATALE, W. Influência do boro no teor, acúmulo e eficiência nutricional em porta-enxertos de caramboleira. Revista Brasileira de Ciências Agrárias, v. 12, n. 1, p. 6-13, 2017. http://dx.doi.org/ 10.5039/agraria.v12i1a5409
. LEITE, R.F.C.; SCHUCH, L.O.B.; AMARAL, A.S.; TAVARES, L.S. Rendimento e qualidade de sementes de arroz irrigado em função da adubação com boro. Revista brasileira de sementes, v. 33, n. 4, p. 785-791, 2011. http://dx.doi.org/10.1590/S0101-31222011000400021
. PAVINATO, P.S.; AGUIAR, A.; CASTRO, G.S.A.; CRUSCIOL, C.A.C. Boro em arroz de terras altas cultivado em solução nutritiva. Bragantia, v. 68, n. 3, p. 743-751, 2009. http://dx.doi.org/10.1590/S0006-87052009000300022.
. BORDIN, L.C.; CASA, R.T.; MARCUZZO, L.L.; BOGO, A.; ZANCAM, R.L. Efeito da aplicação de fungicidas no controle de doenças foliares de arroz irrigado e sua relação com o rendimento industrial. Summa Phytopathologica, v. 42, n. 1, p. 85-88, 2016. http://dx.doi.org/10.1590/0100-5405/2012.
. LOPES, M.B.S.; SILVA, F.R.; ZELLMER, V.A.; ALVES, P.M.; FIDELIS, R.R. Adubação potássica na cultura do arroz em solos arenosos de várzea tropical. Brazilian Journal of Applied Technology for Agricultural Science, v. 9, n. 3, p. 27-33, 2016. 10.5935/PAeT.V9.N3.03
. CONAB - Companhia Nacional de Abastecimento. Acompanhamento da safra brasileira de grãos 2017/18, décimo levantamento. Disponível em: <https://www.conab.gov.br/info-agro/safras/graos/boletim-da-safra-de-graos/item/download/21088_8ca248b277426bb3974f74efa00abab6>. Acesso em: 09 ago 2018.
. BRUNES, A.P.; MENDONÇA, A.O.; OLIVEIRA, S.; LEMES, E.S.; LEITZKE, I.D.; VILLELA, F.A. Produção, qualidade e expressão isoenzimática de semente de trigo produzidas sob diferentes doses de boro. Revista Brasileira de Biociências, v.14, n.3, p. 137-144, 2016.
. FERREIRA, D.F. SISVAR: um programa para análises e ensino de estatística. Revista Symposium, v. 6, n. 2, p. 36-41, 2008.
. WALTER, L.C.; STRECK, N.A.; ROSA, H.T.; FERRAZ, S.E.T.; CERA, J.C. Mudanças climáticas e seus efeitos no rendimento de arroz irrigado no Rio Grande do Sul. Pesquisa Agropecuária Brasileira, v. 49, n. 12, p. 915-924, 2014. http://dx.doi.org/10.1590/S0100-204X2014001200001.
. REHMAN, A.U.; FAROOQ, M.; RASHID, A.; NADEEM, F.; STUERZ, S.; ASCH, F.; BELL, R.W.; SIDDIQUE, K.H.M. Boron nutrition of rice in different production systems. A review. Agronomy for Sustainable Development, v. 38, n. 3, p. 1-24, 2018. https://doi.org/10.1007/s13593-018-0504-8
. PERIN, A.; GONÇALVES, É.L.; FERREIRA, A.C.; SALIB, G.C.; RIBEIRO, J.M.M.; ANDRADE, E.P.; SALIB, N.C. Uso de promotores de crescimento no tratamento de sementes de feijão carioca. Global Science and Technology, v. 9, n. 3, p. 98-105, 2016.
. LONDERO, G.P.; MARCHESAN, E.; PARISOTTO, E.; COELHO, L.L.; ARAMBURU, B.B.; FLORES, C.S.; SILVA, A.L. Qualidade industrial de grãos de arroz decorrente da supressão da irrigação e umidade de colheita. Irriga, v. 20, n. 3, p. 587-601, 2015. https://doi.org/10.15809/irriga.2015v20n3p587
. GARCIA, N.F.S.; ARF, O.; PORTUGAL, J.R.; RODRIGUES, M.; PENTEADO, M.S. Rendimento e qualidade de grãos de arroz de terras altas em função de doses e modos de inoculação com Azospirillum brasilense. Enciclopédia Biosfera, v. 11, n. 21, p. 1653-1651, 2015.
. OLIANI, D.; TEIXEIRA, C.M.; BONILHA, M.A.F.M.; CASSIA, M.T. Adubação foliar com boro e manganês na cultura do feijão. FAZU em Revista, n.8, p. 9-14. 2011.
. LEMISKA, A.; PAULETTI, V.; CUQUEL, F.L.; ZAWADNEAK, M.A.C. Produção e qualidade da fruta do morangueiro sob influÊncia da aplicação do boro. Ciência Rural, v.44, n.4, p. 622-628, 2014. http://dx.doi.org/10.1590/S0103-84782014000400008.
. LIMA, M.L.; CARDOSO, F.R.; GALANTE, A.H.A.; TEIXEIRA, G.C.S.; TEIXEIRA, I.R.; ALVES, S.M.F. Fontes e doses de boro na qualidade de sementes de feijão-comum e mamona sob consórcio. Revista Caatinga, v. 26, n. 4, p. 31-38, 2013.
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