Mapas de zonas de risco de epidemias e zoneamento agroclimático para o Cancro Cítrico no Estado de São Paulo

Abstract

Th e c i t ru s ca n k er, c a us ed by t h e b a ct eri um X a n t ho mo n a s axonopodis pv. citri Valterin et alii 1995, is a known disease world-wide known and it is always a serious threat for the brazilian citriculture. The objective of the present study was to analyze t he c li m at ic cond it i on s of th e S ta te of S ão Pa ulo i n ord er t o develop zone maps of great risk for citrus canker epidemics. metheorological station showed problems in the data series, these had been surpassed of the nearest station. After the accounting of the indexes had been calculated the percentages of days favorable to the occurrence of the disease in the period of one year. From this information, the thematic maps of the state of São Paulo had been generated, with the space distribution of the percentage of days favorable to the occurrence of citrus canker. The region the n ort h wes t regi on of t h e s t a t e wa s t h e on e t h a t p res en t ed t h e greatest percentage of days favorable to the occurrence of the disease.

A system to map the risk of infection by <i>Puccinia kuehnii</i> in Brazil

“…Various studies mapping risk areas have been developed for other crops. Lopes, Barreto, Scaloppi, Barbosa, and Brunini (2008) developed maps for citrus canker in São Paulo State using meteorological data from 2002 to 2005, and reported that the northwest region presented the highest number of days with favorable climatic conditions for the disease. Hamada, Ghini, Rossi, Pedro Junior, and Fernandes (2008) developed maps for grape downy mildew in São Paulo State using climatic data recorded from September to April, the period during which the disease can affect grapevines under development.…”

“…There are particular features on each map created by Lopes et al (2008), Hamada et al (2008), Garcia et al (2008), Moraes et al (2011), andSentelhas et al (2016) in terms of the methodology, meteorological data, climatic data and mathematical models used, mainly due to differences in favorability among the maps for different diseases and crops, as different environmental and genetic factors influence the pathogen-host relationship and determine the complexity of each different pathosystem. The development and dissemination of these maps on a monthly or weekly basis could contribute toward monitoring and epidemiological studies of orange rust occurrence in sugarcane, as well as to the evaluation of the necessity for disease control, including methods such as avoiding planting susceptible varieties in zones favorable to the disease and promoting the use of chemical control in locations and during time periods of high favorability.…”

Mapeamento de áreas de risco para ocorrência da ferrugem do eucalipto no Espírito Santo e extremo sul da Bahia

“…No caso de doenças de plantas, os mapas de zonas de risco, acoplados aos modelos de simulação, são úteis para indicar áreas geográficas ou até mesmo, épocas do ano mais favoráveis à ocorrência de epidemias (13). O uso do Sistema de Informações Geográficas (SIG) permite realizar análises complexas ao integrar informações de diversas fontes e criar bancos de dados georreferenciados.…”

Aspectos epidemiológicos da ferrugem alaranjada da cana-de-açúcar

“…Mapeamentos de zonas de risco de epidemia provenientes de dados epidemiológicos também foram realizados para outras doenças, entre elas, pinta preta e podridão floral dos citros(LOPES, 2007), cancro cítrico(LOPES et al, 2008) e ferrugens do milho(HAMADA et al, 2009).Para a ferrugem alaranjada da cana-de-açúcar, que é de recente importância econômica mundial, estão sendo iniciados trabalhos que relacionam a doença e o clima. Experimentos de germinação de urediniósporos in vitro em diferentes temperaturas e umidades relativas foram elaborados por Magarey; Neilsen e Magnani(2004).…”