Evaluation of the rice germplasm disease incidence in upland and periodically flooded lowland in Amazonas, Brazil.
DOI:
https://doi.org/10.1590/S1678-3921.pab1989.v24.16558Keywords:
rice diseases, grain spot, leaf spot, Oryzae sativa, Helminthosporium oryzae, Pyricularia oryzae, Rhynchosporium orizae, Cercospora oryzae, Rhizoctonia solani.Abstract
The main rice diseases that occurre in Manaus, AM, Brazil, were evaluated by two experiments. On of them was placed on the upland, and the other one on the periodically flooded lowland. This paper also reports the occurrence of Pyricularia oryzae, Helminthosporium oryzae, Rhynchosporium oryzae, Cercospora oryzae and Rhizoctonia solani attacking rice in the Amazonas state. Grain spot and leaf spot caused by H. oryzae were the principal problems on the upland. On the lowland, the incidence of R. solani was high, more than 25%, but, the attack was late and the grain production was not affected.
Downloads
How to Cite
Menezes dos Santos, J. R., & Galvão, E. U. P. (2014). Evaluation of the rice germplasm disease incidence in upland and periodically flooded lowland in Amazonas, Brazil. Pesquisa Agropecuaria Brasileira, 24(12), 1483–1488. https://doi.org/10.1590/S1678-3921.pab1989.v24.16558
Issue
Section
PHYTOPATHOLOGY
