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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
17/05/1993 |
Data da última atualização: |
27/10/2004 |
Autoria: |
MASCARENHAS, H. A. A.; MIRANDA, M. A. C. de; BULISANI, E. A.; BRAGA, N. R. |
Afiliação: |
Instituto Agronomico de Campinas, Cx. Postal 28, 13001, Campinas, SP. Brazil. |
Título: |
Green stem and foliar retention caused by potassium deficiency. |
Ano de publicação: |
1989 |
Fonte/Imprenta: |
In: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989. |
Volume: |
t.2 |
Páginas: |
p.728-733. |
Idioma: |
Inglês |
Conteúdo: |
Potassium deficiency in areas traditionally cultivated with soybeans for the past 13 to 20 years was due to utilization on inadequate fertilizer formulas, which have not catered to the needs of the soybean cultivars planted throught the years. The low potassium concentration in the soil caused symptoms like green stem at harvest, foliar retention, pod drop at pod filling stage, and the formation of parthernocarpic fruits similar to those found in male sterile soybean plants. The (Ca+Mg)/K ratio of the soil as well as that of the leves seem to be a good indicator of the nutritional imbalance that caused the above mentioned symptioms. With the increase in yield, the quantity of potassium extracted by the crop (without taking into consideration potassium fixa-tion and leaching, etc.) was greater than applied by the fertilizers using the traditional formulas: 350 kg/ha of the 0-18-6 formula and 200 kg/ha of the 4-30-10 formula applied annually. Consequantly, along the years, potassium deficiency appeared in soybean crops. |
Palavras-Chave: |
Brasil; Deficiencia de potassio; Potassium deficiency; Soybean. |
Thesagro: |
Soja. |
Thesaurus Nal: |
Brazil. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01756naa a2200253 a 4500 001 1453659 005 2004-10-27 008 1989 bl uuuu u00u1 u #d 100 1 $aMASCARENHAS, H. A. A. 245 $aGreen stem and foliar retention caused by potassium deficiency. 260 $c1989 300 $ap.728-733. t.2 490 $vt.2 520 $aPotassium deficiency in areas traditionally cultivated with soybeans for the past 13 to 20 years was due to utilization on inadequate fertilizer formulas, which have not catered to the needs of the soybean cultivars planted throught the years. The low potassium concentration in the soil caused symptoms like green stem at harvest, foliar retention, pod drop at pod filling stage, and the formation of parthernocarpic fruits similar to those found in male sterile soybean plants. The (Ca+Mg)/K ratio of the soil as well as that of the leves seem to be a good indicator of the nutritional imbalance that caused the above mentioned symptioms. With the increase in yield, the quantity of potassium extracted by the crop (without taking into consideration potassium fixa-tion and leaching, etc.) was greater than applied by the fertilizers using the traditional formulas: 350 kg/ha of the 0-18-6 formula and 200 kg/ha of the 4-30-10 formula applied annually. Consequantly, along the years, potassium deficiency appeared in soybean crops. 650 $aBrazil 650 $aSoja 653 $aBrasil 653 $aDeficiencia de potassio 653 $aPotassium deficiency 653 $aSoybean 700 1 $aMIRANDA, M. A. C. de 700 1 $aBULISANI, E. A. 700 1 $aBRAGA, N. R. 773 $tIn: CONFERENCIA MUNDIAL DE INVESTIGACION EN SOJA, 4., 1989, Buenos Aires. Actas... Buenos Aires: AASOJA, 1989.
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Embrapa Soja (CNPSO) |
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1. | | BECHE, E.; BENIN, G.; GUARIENTI, E. M.; LEMES, C.; PAGLIOSA, E. S.; SIGNORINI, A. A.; PINOW, C.; MUNARO, L. B.; FRANKE, J.; CAPELIN, M. A.; SILVA, R. R. Efeito de níveis tecnológicos de manejo sob a qualidade industrial de genótipos de trigo. In: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 3., 2009, Veranópolis. Ata e resumos... Porto Alegre: Comissão Brasileira de Pesquisa de Trigo e Triticale: Fepagro; Veranóplis: ASAV; Passo Fundo: Embrapa Trigo, 2009. Ecologia, trabalho 14. 3 p.Tipo: Resumo em Anais de Congresso |
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