ANÁLISIS EPIDEMIOLÓGICO DEL VIRUS DE LA MANCHA ANULAR DEL PAPAYO BAJO DIFERENTES DENSIDADES, APLICACIÓN DE EXTRACTOS ACUOSOS DE SEMILLAS DE NIM (Azadirachta indica A. Juss.) Y ELIMINACIÓN DE PLANTAS ENFERMAS DEL cv. MARADOL ROJA

• DOI: 10.5154/r.rchsh.2001.02.011
• Publication Date: 2017-03-18T03:00:15Z
• Authors: E. Hernández-Castro; D. Riestra-Díaz; J.A. Villanueva-J...; R Mosqueda-Vázquez
• Keywords: Azadirachta

Forty-eight epidemic outbreaks of the papaya ringspot potyvirus (PRSV-p) in cv. Maradol Roja Paso de Ovejas, Veracruz, Mexico, were analyzed, under different plant densities, application 2.5 % neem aqueous extract, and roguing plants with initial symptoms PRSV-p. The logistic model had best fit to 47 curves. Analysis variance incidence severity data based on “area curve disease progress” “adjusted rate for Rho” variables, resulted highly significant differences (P£0.0009) variables density elimination symptoms. Plant 2,734 plant·ha-1 obtained lowest accumulated incidence. Roguing lowered delayed damage caused by Although extract was compared no application, it not as decisive other two management tactics.