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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
15/06/1994 |
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Data da última atualização: |
02/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PRABHU, A. S.; FARIA, J. C.; ZIMMERMANN, F. J. P. |
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Afiliação: |
ANNE SITARAMA PRABHU, CNPAF; JOSIAS CORREA DE FARIA, CNPAF; FRANCISCO JOSÉ PFEILSTICKER ZIMMERMANN, CNPAF. |
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Título: |
Comparative yield loss estimates due to blast in some upland rice cultivars. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Fitopatologia Brasileira, v. 14, n. 3/4, p. 227-232, out./dez. 1989. |
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Idioma: |
Inglês |
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Conteúdo: |
Leaf and panicle blast severities and grain yield of some upland rice cultivars were measured in three successive years in field plots unprotected or protected with fungicides. The variation in disease severities in different plots was used to establish relationships between severity of leaf and panicle blast and yield. Linear multiple regression equations for each cultivar by year were developed to estimate the yield decrease in different cultivars per unit increase in disease. Leaf blast severities at maximum tillering or booting stage and panicle blast 25 days after heading accounted for variation in grain yield in most of the cultivars. General equations combining five early and eight medium-duration rice cultivars were developed. The estimated percentage losses in grain yield due to blastwere 2.7 and 1.5 for one percent increase in blast in the early and medium-duration cultivars, respectively. |
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Thesagro: |
Arroz; Brusone; Doença de Planta; Fungo; Oryza Sativa; Perda; Pyricularia Oryzae. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/182092/1/CNPAF-1989-fb.pdf
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Marc: |
LEADER 01534naa a2200229 a 4500
001 1195808
005 2023-03-02
008 1989 bl uuuu u00u1 u #d
100 1 $aPRABHU, A. S.
245 $aComparative yield loss estimates due to blast in some upland rice cultivars.
260 $c1989
520 $aLeaf and panicle blast severities and grain yield of some upland rice cultivars were measured in three successive years in field plots unprotected or protected with fungicides. The variation in disease severities in different plots was used to establish relationships between severity of leaf and panicle blast and yield. Linear multiple regression equations for each cultivar by year were developed to estimate the yield decrease in different cultivars per unit increase in disease. Leaf blast severities at maximum tillering or booting stage and panicle blast 25 days after heading accounted for variation in grain yield in most of the cultivars. General equations combining five early and eight medium-duration rice cultivars were developed. The estimated percentage losses in grain yield due to blastwere 2.7 and 1.5 for one percent increase in blast in the early and medium-duration cultivars, respectively.
650 $aArroz
650 $aBrusone
650 $aDoença de Planta
650 $aFungo
650 $aOryza Sativa
650 $aPerda
650 $aPyricularia Oryzae
700 1 $aFARIA, J. C.
700 1 $aZIMMERMANN, F. J. P.
773 $tFitopatologia Brasileira$gv. 14, n. 3/4, p. 227-232, out./dez. 1989.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
