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- Title
Eficacia del azoxystrobin y diferentes triazoles en el control en campo de las principales enfermedades fúngicas del arroz en Cuba.
- Authors
Pérez-Vicente, Luis; Cordero, Vladimir; Fabret-Leal, Leonila
- Abstract
The efficacy of new fungicides, rates and timing of treatments on the control of leaf blight and neck rot by Magnaporthe grisea, sheath blight by Rhizoctonia solani, leaf scald by Gerlachia oryzae, sheath rot by Sarocladium oryzae and brown stripe of the leaf by Sphaerulina oryzina was study in an experiment at the Caribe farm in the rice production CAI Los Palacios using a factorial in ramdomized blocks design with four repetitions. The best results in the control of M. grisea were obtained with azoxystrobin (120 g ia./ha), tebuconazole + triadimenol (110 + 37.5 g ia./ha) and pyroquilon + propiconazole (125 + 125 g ia./ha) in treatments at disease onset in the leaves and at 10 and 50 % of panicle development in the field. The fungicides iprofenphos and edifenphos showed a low efficacy in the control of leaf blight and neck rot by M. grisea. The best control of R. solani were achieved by azoxystrobin (120 g ia./ha) and the mixture of edifenphos + hexaconazole at 500+50 g ia./ha. Tebuconazole + triadimenol at the rate of 112.5 + 37.5 g ia./ha and azoxystrobin at 120 g ia./ha, shown the best efficacy in the control of leaf scald by Gerlachia oryzae without differenc among them. The yields of the plots were correlated with the incidence of leaf blight and neck rot by M. grisea and leaf scald. The best yields were obtained with azoxystrobin and tebuconazole + triadimenol at the used rates.
- Subjects
CUBA; RICE diseases &; pests treatment; FUNGAL diseases of plants; AZOXYSTROBIN; TRIAZOLES; STROBILURINS; FUNGICIDES; AGRICULTURE; HINOSAN
- Publication
Revista Centro Agricola, 2009, Vol 36, Issue 2, p15
- ISSN
0253-5785
- Publication type
Article