Effect of Silicon in Control of Leaf Blast of the Rice in Northern Mato Grosso

Autores

  • S. M. Bonaldo Federal University of Mato Grosso - Campus Sinop/PPGCAM
  • O. Socreppa Junior Federal University of Mato Grosso - Campus Sinop

DOI:

https://doi.org/10.36560/40201344

Palavras-chave:

Oryza sativa, alternative control, diseases, Mato Grosso

Resumo

The  application  of  silicon  in  rice  has  shown  effectiveness  in  controlling  diseases  such  as  leaf blastl.  Therefore  this  study  evaluated  the  application  of  foliar  silicon  in  rice  under  the  growthconditions in the state of Mato Grosso, for leaf blast control. The experiment conducted in the field, Socreppa  Munhoz farm, municipality  of Porto  the Gaúchos/MT. The  experimental design was randomized, three treatments with ten replications each. The treatments consisted of foliar application of potassium silicate (Sili-k®, with 171 g Si L-1 and 210 g L-1K2O) dose of 3.0 kg ha-1with an application, two applications, and an untreated control. Evaluation of leaf blast was realized in the four upper  leaves  in the main tillers of the plant on 10 tillers randomly collected in the four central rows of each plot. The severity of leaf blast was determined using a scale of 10 degrees (0; 0.5; 1.0; 2.0; 4.0; 8.0; 16.0; 32.0; 64.0 and 82.0% leaf area affected). Thr ee assessments were made  at  intervals  of  0,  19  and  34  days  after  application  for  calculating  the  area  under  the disease  progress  curve  (AUDPC).  The  best  results  in  reducing  the  AUDPC  were  with  an application of potassium silicate. Flag leaf with two applications resulted in less severity leaf blast.

Referências

BUCK, GUILHERME BOSSI. Silicato de potássio via foliar e o controle da brusone do arroz. 2006. 66p. Dissertação (Mestrado em Agronomia/Solos). Universidade Federal de Uberlandia, 2006.

BRESEGHELLO, F.; STONE L.F. Tecnologia para o arroz de terras altas. v.1, p.01-03, 1998.

CAMPBELL, C.L.; MADDEN, L.V. Introduction to Plant Disease Epidemiology. New York. John Wiley & Sons. 1990.

FILIPPI, M.C.; PRABHU, A.S. Doenças do arroz e seu controle. In: BRESEGHELLO, F.; STONE, L.F. Tecnologia para o arroz de terras altas. v.1, p.139-157, 1998.

KORNDÖRFER, G.H.; DATNOFF, L.E. Adubação com silício: uma alternativa no controle de doenças da cana-de-açúcar e do arroz. Informações Agronômicas , n.70, p.1-5, 1995.

MENZIES, J.; BOWEN, P.; EHRET, D.; GLASS, A. D. M. Foliar applications of potassium silicate reduce severity of powdery mildew on cucumber, muskmelon, and zucchini squash. American Society For Horticultural

Science, Alexandria, v.117, n.6, p.902 -905, 1992.

NOTTEGHEM, J. L. Cooperative experiment on horizontal resistance to rice blast. In: INTERNATIONAL RICE RESEARCH INSTITUTE (Los Baños, Philippines). Blast and upland rice: report and recommendations from the

meeting for international collaboration in upland rice improvement. Los Baños, 1981. p. 43-51.

PRABHU, A.S.; GRANCÊS L. A.; FAUSTINA C.; BERNI R. F. Estimativa de danos causados pela brusone na produtividade de arroz de terras altas. Pesquisa agropecuária Brasileira. v.38, n.9, p.1045-1051, 2003.

PRABHU, A.S.; ARAÚJO, L.G.; SILVA, G.B. Doenças e métodos de controle. Embrapa arroz e feijão: sistemas de produção, 2003. Disponível em: http://sistemasdeproducao.cnptia.embrap

a.br/FontesHTML/Arroz/ArrozTerrasAltas/doencas.htm. Acesso em: 09 out. 2008.

RAFI, M. M.; EPSTEIN, E.; FALK, R. H. Silicon deprivation causes physical abnormalities in wheat (Triticum aestivum L.). Journal of plant Physiology, Rockville, v151, p.497-501, 1997.

RODRIGUES, F.A.; DATNOFF, L.E. Silicon and Rice Disease Management. Fitopatologia Brasileira, n.30, p.457-469, 2005.

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Publicado

2013-11-20

Como Citar

Bonaldo, S. M., & Socreppa Junior, O. (2013). Effect of Silicon in Control of Leaf Blast of the Rice in Northern Mato Grosso. Scientific Electronic Archives, 4, 59–63. https://doi.org/10.36560/40201344

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Ciências Agrárias

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