Email this article Diagramatic scale for quantification of rust severity in teak leaves
Abstract
Teak (Tectona grandis) rust, caused by the fungus Olivea tectonae, has been present in several regions of Brazil in severe cases that lead to the premature fall of the leaves and even the death of the plant. However, there is still no standard method for assessment of disease severity in the field. The objective of this study was to develop and validate a diagrammatic scale to quantify the rust severity in leaves of teak. The diagrammatic scale was developed based on disease severity encompassing 0, 2.5, 5, 10, 20, 40 and 80% of the leaf area with rust symptom. The scale was validated by 10 raters, who analyzed 50 leaves with a range of disease severity, without and with diagrammatic scale as an assessment aid. The raters presented differences in the perception of the severity levels of the disease. With the adoption of the diagrammatic scale all the raters improved the accuracy of the estimates, there was a reduction in the absolute errors and good estimates of repeatability. The proposed diagrammatic scale is suitable for the evaluation of the rust severity in teak leaves, being able to provide accuracy and repeatability of estimates.
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ABRAF, Associação Brasileira de Produtores de Florestas Plantadas. 2013. Anuário estatístico da ABRAF 2013 - Ano base 2012. Disponible en línea: http://www.ipef.br/estatisticas/relatorios/anuario-abraf13-br.pdf (consulta, agosto 2017).
AMATA. 2009. Mercado de bosques plantados. São Paulo, Brasil. Disponible en línea: www.amatabrasil.com.br/download-arquivo?id=588 (consulta, julio 2017).
Angelotti F, Scapin CR, Tessmann DJ, Vida JB, Oliveira RR and Canteri MG. 2008. Diagrammatic scale for assessment of grapevine rust. Tropical Plant Pathology 33:439-443. http://dx.doi.org/10.1590/S1982-56762008000600006
Arguedas-Gamboa M. 2004. La roya de la teca Olivea tectonae (Rac.): consideraciones sobre su presencia en Panamá y Costa Rica. Revista Forestal 1:1-16. Disponible en línea: http://revistas.tec.ac.cr/index.php/kuru/article/view/600/2818
Bergamin Filho A y Amorim L. 1996. Doenças de Plantas Tropicais: Epidemiologia e Controle Econômico. Agronômica Ceres. São Paulo, Brasil. 299p.
Berger RD. 1980. Measuring disease intensity. Pp: 28-31. In: Teng PS and Krupa SV (eds.). Crop Loss Assessment Which Constrain Production and Crop Improvement in Agriculture and Forestry. University of Minnesota Press. St. Paul, USA. 269p.
Cáceres Florestal. 1997. Manual do cultivo da teca. Disponible en línea: http://www.caceresflorestal.com.br/Manual_do_cultivo_da_teca-Caceres_Florestal.pdf (consulta, mayo 2017).
Campbell CL and Madden LV. 1990. Introduction to Plant Disease Epidemiology. Jonh Wiley & Sons. New York, USA. 532p. https://doi.org/10.1017/S0007485300051890
Capucho AS, Zambolim L, Duarte HSS and Vaz GRO. 2011. Development and validation of a standard area diagram set to estimate severity of leaf rust in Coffea arabica and C. canephora. Plant Pathology 60:1144-1150. https://doi.org/10.1111/j.1365-3059.2011.02472.x
Céspedes PB y Yepes MS. 2007. Nuevos registros de royas (uredinales) potencialmente importantes en Colombia. Revista Facultad Nacional de Agronomía de Medellín 60:3645-3655. DOI: 10.15446/rfnam
Del Ponte EM, Pethybridge SJ, Bock CH, Michereff SJ, Machado FJ and Spolti P. 2017. Standard area diagrams for aiding severity estimation: scientometrics, pathosystems and methodological trends in the last 25 years. Phytopathology 107:1161-1174. https://doi.org/10.1094/PHYTO-02-17-0069-FI
EMBRAPA, Empresa Brasileira de Pesquisa Agropecuária. 2007. Sistema de produção de teca para o Estado de Rondônia. Disponible en línea: https://www.infoteca.cnptia.embrapa.br/bitstream/doc/698944/1/spteca.pdf (Consulta, febrero 2016).
Godoy CV, Carneiro SMTPG, Iamauti MT, Pria MD, Amorim L, Berger RD and Bergamin Filho A. 1997. Diagrammatic scales for bean diseases: development and validation. Journal of Plant Disease and Protection 104:336-345. https://pdfs.semanticscholar.org/525b/8b3e232bd5781f9b4f670c98e5f376779d2e.pdf
Godoy CV, Koga LJ and Canteri MG. 2006. Diagrammatic scale for assessment of soybean rust severity. Fitopatologia Brasileira 31:63-68. http://dx.doi.org/10.1590/S0100-41582006000100011
Klosowski AC, Ruaro L, Bespalhok Filho JC y May De Mio LL. 2013. Proposta e validação de escala para a ferrugem alaranjada da cana-de-açúcar. Tropical Plant Pathology 38:166-171. http://dx.doi.org/10.1590/S1982-56762013000200012
Kranz J. 1988. Measuring plant disease. Pp: 35-50. In: Kranz J and Rotem J. (eds.). Experimental Techniques in Plant Disease Epidemiology. Springer-Verlag. Heidelberg: Germany. 299p.
Leite RMVBC y Amorim L. 2002. Elaboração e validação de escala diagramática para mancha de Alternaria em girassol. Summa Phytopathologica 28:14-19.
Horsfall JC and Barratt RW. 1945. An improved grading system for measuring plant diseases. Phytopathology 35:665.
NAPPO, North American Plant Protection Organization. 2005. Pest Alert - Detección de la roya de la teca (Olivea tectonae), (Rac.) Thirum. Chaconiaceae, en el município de Las Choapas, Veracruz, México. Disponible en línea: http://www.pestalert.org/espanol/oprDetail.cfm?oprID=142&keyword=Olivea%20tectonae (consulta, Febrero 2016).
Nutter Jr. FW, Esker PD and Coelho Netto RA. 2006. Disease assessment concepts and the advancements made in improving the accuracy and precision of plant disease data. European Journal of Plant Pathology 115:95-103. https://doi.org/10.1007/s10658-005-1230-z
Nutter Jr. FW and Schultz PM. 1995. Improving the accuracy and precision of disease assessments: selection of methods and use of computer-aided training programs. Canadian Journal of Plant Pathology 17:174-184. https://doi.org/10.1080/07060669509500709
Nutter Jr. FW, Gleason ML, Jenco JH and Christians NC. 1993. Assessing the accuracy, intra-rater repeatability, and inter-rater reliability of disease assessment systems. Phytopathology 83:806-812. DOI: 10.1094/Phyto-83-806
Pérez M, López MO and Marti O. 2008. Olivea tectonae, leaf rust of teak, occurs in Cuba. New Diseases Reports 17:32. Disponible en línea: http://www.ndrs.org.uk/article.php?id=017032
Pieri C, Passador MM, Furtado EL y Carvalho Júnior AA. 2011. Ferrugem da teca (Olivea neotectonae): novas ocorrências no Brasil e revisão do nome específico. Summa Phytopathologica 37:199-201. http://dx.doi.org/10.1590/S0100-54052011000400006
Shokes FM, Berger RD, Smith DH, Rasp JM. 1987. Reliability of disease assessment procedures: a case study with late leafspot of peanut. Oléagineux 42:245-251.
Stonehouse J. 1994. Assessment of Andean bean diseases using visual keys. Plant Pathology 43:519-527. https://doi.org/10.1111/j.1365-3059.1994.tb01586.x
DOI: http://dx.doi.org/10.18781/R.MEX.FIT.1708-5
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