Data/hora: 22/06/2024 00:58:48

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 25/11/2019
Data da última atualização: | 25/11/2019
Autoria: | OLIVEIRA, L. M. de; MARCHESAN, E.; DAVID, R. de; WERLE, I. S.; ARAMBURU, B. B.; DONATO, G.; SILVA, A. L. da; COSTA, I. F. D. da.
Afiliação: | Lillian Matias de Oliveira, Universidade Federal de Viçosa - UFV; Enio Marchesan, Universidade Federal de Santa Maria - UFSM; Ricardo de David, Universidade Federal de Santa Maria - UFSM; Isabel Schlegel Werle, Universidade Federal de Santa Maria - UFSM; Bruno Behenck Aramburu, Universidade Federal de Santa Maria - UFSM; Gabriel Donato, Universidade Federal de Santa Maria - UFSM; Anelise Lencina da Silva, Universidade Federal de Santa Maria - UFSM; Ivan Francisco Dressler da Costa, Universidade Federal de Santa Maria - UFSM.
Título: | Occurrence of panicle blast in and grain quality of irrigated rice fertilized with nitrogen and silicates.
Ano de publicação: | 2019
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v. 59, e00295, 2019 .
Idioma: | Inglês
Notas: | Título em português: Ocorrência de brusone e qualidade de grãos em arroz irrigado adubado com nitrogênio e silicatos.
Conteúdo: | The objective of this work was to evaluate the effects of fertilization with nitrogen topdressing and silicates, as well as of the use of fungicides, on the occurrence of panicle blast, milling yield, and whole grains, vitreous grains, and chalky kernels in an irrigated rice cultivar sensitive to the disease. Two experiments were conducted in a randomized complete block design, in a 4×4×2 factorial arrangement, with four replicates: in experiment 1, four doses of nitrogen × four doses of calcium and magnesium silicate on soil × with and without fungicides; and, in experiment 2, four doses of nitrogen × four doses of potassium silicate applied on leaves x with and without fungicides. At the doses above 60 kg ha-1 nitrogen without fungicides, there was an increase in panicle blast severity, a decrease in the percentage of whole and vitreous grains, and an increase in chalky kernels and chalky area. The greatest effects of silicates occurred without fungicides. Fungicide use reduced the severity of blast in the panicles. Milling yield ranged from 60 to 70% in both experiments. The control of blast with fungicides maintains high rice grain quality, milling yield, and percentages of whole and vitreous grains.
Palavras-Chave: | Grãos inteiros; Rendimento do grão; Whole grains.
Thesagro: | Oryza Sativa; Pyricularia Oryzae.
Thesaurus Nal: | Grain yield.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/205433/1/Occurrence-of-panicle-blast-in-and-grain.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (64278-1) - UPE - AP - DD -  -  -  - DIS