Seasonal fluctuation of 'Candidatus Liberibacter asiaticus' titers in citrus trees - Lopes, S. A.; Sousa, M. C.; Frare, G. F.; Barbosa, J. C. [UNESP]; Silva, J. A.; Furtado, Edson Luiz [UNESP] (Amer Phytopathological Soc, 2011)