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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
31/03/2012 |
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Data da última atualização: |
31/03/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MONTAGNER, D. B.; NASCIMENTO JÚNIOR, D. do; SOUSA, B. M. de L.; VILELA, H. H.; EUCLIDES, V. P. B.; SILVA, S. C. da; SBRISSIA, A. F.; CARLOTO, M. N. |
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Afiliação: |
DENISE BAPTAGLIN MONTAGNER, CNPGC; Domicio do Nascimento Júnior, UFV; Braulio Maia de Lana Sousa, UFV; Hélio Henrique Vilela, UFV; VALERIA PACHECO BATISTA EUCLIDES, CNPGC; Sila Carneiro da Silva, USP/ESALQ, Piracicaba, SP; André Fischer Sbrissia, UDESC, Lages, SC.; Marciele Neves Carloto. |
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Título: |
Morphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v.40, n.10, p.2105-2110, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in the summer when compared with the winter. Contrarily, stem elongation rate, phyllochron and leaf lifespan were lower in the summer when compared with the winter. During the summer, young tillers had higher leaf appearance and elongation rates when compared with the older ones. Young and mature tillers had the highest values of live leaves per tiller in the summer. There was no difference between summer and winter for the final length of leaf blade between tillers of the same age, except in mature tillers, which had higher final leaf length during the summer. Senescence rate of leaves was higher in young tillers, followed by mature and old tillers. Age of tiller affects morphogenic and structural characteristics of pasture, showing that young tillers have better growth compared with mature and old tillers. |
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Thesagro: |
Panicum Maximum; Pastagem. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/56880/1/valeria.pdf
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Marc: |
LEADER 02050naa a2200229 a 4500
001 1921300
005 2012-03-31
008 2011 bl uuuu u00u1 u #d
100 1 $aMONTAGNER, D. B.
245 $aMorphogenetic and structural characteristics of tillers of guinea grass of different age and grazing severities.$h[electronic resource]
260 $c2011
520 $aThe objective of this research was to evaluate the effects of tiller age on morphogenic and structural characteristics of guinea grass cv. Mombaca subjected to intermittent stocking and three stubble heights: 30 cm, 50 cm and 50-30 cm. Stubble heights were assigned to experimental units in a completely randomized block design with three replicates. Grazing was performed when canopy intercepted 95% of light incidence. Leaf appearance rate, leaf elongation rate and number of live leaves per tiller were higher in the summer when compared with the winter. Contrarily, stem elongation rate, phyllochron and leaf lifespan were lower in the summer when compared with the winter. During the summer, young tillers had higher leaf appearance and elongation rates when compared with the older ones. Young and mature tillers had the highest values of live leaves per tiller in the summer. There was no difference between summer and winter for the final length of leaf blade between tillers of the same age, except in mature tillers, which had higher final leaf length during the summer. Senescence rate of leaves was higher in young tillers, followed by mature and old tillers. Age of tiller affects morphogenic and structural characteristics of pasture, showing that young tillers have better growth compared with mature and old tillers.
650 $aPanicum Maximum
650 $aPastagem
700 1 $aNASCIMENTO JÚNIOR, D. do
700 1 $aSOUSA, B. M. de L.
700 1 $aVILELA, H. H.
700 1 $aEUCLIDES, V. P. B.
700 1 $aSILVA, S. C. da
700 1 $aSBRISSIA, A. F.
700 1 $aCARLOTO, M. N
773 $tRevista Brasileira de Zootecnia$gv.40, n.10, p.2105-2110, 2011.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
25/09/2020 |
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Data da última atualização: |
22/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MELO, F. de B.; SOUZA, H. A. de; BASTOS, E. A.; CARDOSO, M. J. |
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Afiliação: |
FRANCISCO DE BRITO MELO, CPAMN; HENRIQUE ANTUNES DE SOUZA, CPAMN; EDSON ALVES BASTOS, CPAMN; MILTON JOSE CARDOSO, CPAMN. |
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Título: |
Critical levels and sufficiency ranges for leaf nutrient diagnosis in cowpea grown in the Northeast region of Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Revista Ciência Agronômica, v. 51, n. 4, e20196954, 2020. |
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ISSN: |
1806-6690 |
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DOI: |
10.5935/1806-6690.20200071 |
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Idioma: |
Inglês |
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Conteúdo: |
Proposing sufficiency ranges and critical levels is an important technique for correct evaluation of leaf nutrient diagnosis. In this study, the objective was to propose critical levels and sufficiency ranges of macro- and micronutrients for the diagnostic leaf of cowpea, collected at flowering, with the results of macro- and micronutrients and productivity in the Northeast of Brazil. The critical level was calculated by the reduced normal distribution and by the boundary line method, which was also used to generate sufficiency ranges. For the critical level by reduced normal distribution, the relationship of the nutrients with 90% of maximum productivity was adopted. For the boundary line, the relationship of the nutrients that are in the upper line of a dispersion diagram was considered. The critical levels by reduced normal distribution for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) are: 35.3 g kg-1, 1.8 g kg-1, 20.5 g kg-1, 11.1 g kg-1, 2.6 g kg-1, 3.2 mg kg-1, 105 mg kg-1, 89 mg kg-1and 22 mg kg-1, respectively. However, the critical levels generated by the boundary line for N, P, K, Ca, Mg, Cu, Fe, Mn and Zn are 39.5 g kg-1, 2.3 g kg-1, 21.2 g kg-1, 11.3 g kg-1, 2.9 g kg-1, 4.2mg kg-1, 142 mg kg-1, 143mg kg-1 and 24 mg kg-1, respectively. The sufficiency ranges by the boundary line method, to achieve 95% of maximum productivity, are equivalent to 34.4-44.7g kg-1, 1.7-2.9 g kg-1,18.6-23.6 g kg-1,8.8-13.7 g kg-1,2.3-3.5 g kg-1,3.1-5.4 mg kg-1,73-210 mg kg-1,104-181 mg kg-1 and 22-27 mg kg-1 for N, P, K, Ca, Mg, Cu, Fe, Mn and Zn, respectively. MenosProposing sufficiency ranges and critical levels is an important technique for correct evaluation of leaf nutrient diagnosis. In this study, the objective was to propose critical levels and sufficiency ranges of macro- and micronutrients for the diagnostic leaf of cowpea, collected at flowering, with the results of macro- and micronutrients and productivity in the Northeast of Brazil. The critical level was calculated by the reduced normal distribution and by the boundary line method, which was also used to generate sufficiency ranges. For the critical level by reduced normal distribution, the relationship of the nutrients with 90% of maximum productivity was adopted. For the boundary line, the relationship of the nutrients that are in the upper line of a dispersion diagram was considered. The critical levels by reduced normal distribution for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) are: 35.3 g kg-1, 1.8 g kg-1, 20.5 g kg-1, 11.1 g kg-1, 2.6 g kg-1, 3.2 mg kg-1, 105 mg kg-1, 89 mg kg-1and 22 mg kg-1, respectively. However, the critical levels generated by the boundary line for N, P, K, Ca, Mg, Cu, Fe, Mn and Zn are 39.5 g kg-1, 2.3 g kg-1, 21.2 g kg-1, 11.3 g kg-1, 2.9 g kg-1, 4.2mg kg-1, 142 mg kg-1, 143mg kg-1 and 24 mg kg-1, respectively. The sufficiency ranges by the boundary line method, to achieve 95% of maximum productivity, are equivalent to 34.4-44.7g kg-1, 1.7-2.9 g kg-1,18.6-23... Mostrar Tudo |
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Thesagro: |
Feijão de Corda; Folha; Nutrição Vegetal; Nutriente Mineral; Vigna Unguiculata. |
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Thesaurus NAL: |
Cowpeas; Plant micronutrients; Plant nutrition; Vigna. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216214/1/CriticalSufficiencyNutrientCowpeaRCA2020.pdf
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Marc: |
LEADER 02522naa a2200289 a 4500
001 2125123
005 2024-01-22
008 2020 bl uuuu u00u1 u #d
022 $a1806-6690
024 7 $a10.5935/1806-6690.20200071$2DOI
100 1 $aMELO, F. de B.
245 $aCritical levels and sufficiency ranges for leaf nutrient diagnosis in cowpea grown in the Northeast region of Brazil.$h[electronic resource]
260 $c2020
520 $aProposing sufficiency ranges and critical levels is an important technique for correct evaluation of leaf nutrient diagnosis. In this study, the objective was to propose critical levels and sufficiency ranges of macro- and micronutrients for the diagnostic leaf of cowpea, collected at flowering, with the results of macro- and micronutrients and productivity in the Northeast of Brazil. The critical level was calculated by the reduced normal distribution and by the boundary line method, which was also used to generate sufficiency ranges. For the critical level by reduced normal distribution, the relationship of the nutrients with 90% of maximum productivity was adopted. For the boundary line, the relationship of the nutrients that are in the upper line of a dispersion diagram was considered. The critical levels by reduced normal distribution for nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) are: 35.3 g kg-1, 1.8 g kg-1, 20.5 g kg-1, 11.1 g kg-1, 2.6 g kg-1, 3.2 mg kg-1, 105 mg kg-1, 89 mg kg-1and 22 mg kg-1, respectively. However, the critical levels generated by the boundary line for N, P, K, Ca, Mg, Cu, Fe, Mn and Zn are 39.5 g kg-1, 2.3 g kg-1, 21.2 g kg-1, 11.3 g kg-1, 2.9 g kg-1, 4.2mg kg-1, 142 mg kg-1, 143mg kg-1 and 24 mg kg-1, respectively. The sufficiency ranges by the boundary line method, to achieve 95% of maximum productivity, are equivalent to 34.4-44.7g kg-1, 1.7-2.9 g kg-1,18.6-23.6 g kg-1,8.8-13.7 g kg-1,2.3-3.5 g kg-1,3.1-5.4 mg kg-1,73-210 mg kg-1,104-181 mg kg-1 and 22-27 mg kg-1 for N, P, K, Ca, Mg, Cu, Fe, Mn and Zn, respectively.
650 $aCowpeas
650 $aPlant micronutrients
650 $aPlant nutrition
650 $aVigna
650 $aFeijão de Corda
650 $aFolha
650 $aNutrição Vegetal
650 $aNutriente Mineral
650 $aVigna Unguiculata
700 1 $aSOUZA, H. A. de
700 1 $aBASTOS, E. A.
700 1 $aCARDOSO, M. J.
773 $tRevista Ciência Agronômica$gv. 51, n. 4, e20196954, 2020.
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