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| Registros recuperados : 38 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
|
Data corrente: |
26/01/2018 |
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Data da última atualização: |
26/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
KOHMANN, M. M.; SOLLENBERGER, L. E.; VENDRAMINI, J. M. B.; SILVEIRA, M. L.; MORENO, L. S. B. |
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Afiliação: |
MARTA M. KOHMANN, UNIVERSITY OF FLORIDA; LYNN E. SOLLENBERGER, UNIVERSITY OF FLORIDA; JOAO M. B. VENDRAMINI, UNIVERSITY OF FLORIDA; MARIA L. SILVEIRA, UNIVERSITY OF FLORIDA; LEONARDO SIMOES DE BARROS MORENO, CNPASA. |
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Título: |
Harvest stubble height and K fertilization affect performance of Jiggs and 'Tifton 85' bermudagrasses. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Crop Science, v. 57, n. 6, p. 3353-3359, Nov./Dec. 2017. |
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DOI: |
10.2135/cropsci2017.05.0308 |
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Idioma: |
Inglês |
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Conteúdo: |
Use of Jiggs bermudagrass [Cynodon dactylon (L.) Pers.] for hay has increased in warm climates like southern Florida, but effects of defoliation and K fertilizer management on Jiggs adaptation to environments with frequent winter freezes are not known. During 2 yr, K fertilization (0, 17, and 34 kg K ha−1 harvest−1) and cutting stubble height (SH, 8 and 16 cm every 28 d) effects on herbage accumulation (HA), ground cover, K removal, and tissue and soil K were evaluated for Jiggs and ?Tifton 85? (Cynodon spp.) bermudagrasses. All treatments received 240 kg N ha-1 yr-1. Herbage accumulation was greater for 8- than 16-cm SH (8050 and 7330 kg ha-1 yr-1, respectively) and increased linearly from 7040 to 8120 kg ha-1 yr-1 with increasing K fertilization. Potassium fertilization did not affect grass percentage ground cover, but Jiggs had 17 (2014) and 40% (2015) greater cover than Tifton 85. Increasing K fertilization increased tissue K concentration (15 to 19 g kg-1 in 2014 and 13 to 25 g kg-1 in 2015) and K removal in HA (from 104 to 149 kg ha-1 in 2014 and 88 to 216 kg ha-1 in 2015). During 2 yr, soil-extractable K declined 6 mg kg-1 for the zero K level but increased 6 mg kg-1 when K was applied. In a cooler subtropical region characterized by frequent winter freezes and across a range of K fertilizer and SH levels, Jiggs sustained ground cover better than Tifton 85, but K fertilization did not affect persistence. |
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Palavras-Chave: |
Nitrogen fertilization. |
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Thesagro: |
Cynodon Dactylon; Grama bermuda; Proteina. |
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Thesaurus NAL: |
Crude protein; Fertilizer application; Stubble. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02259naa a2200265 a 4500
001 2086425
005 2018-01-26
008 2017 bl uuuu u00u1 u #d
024 7 $a10.2135/cropsci2017.05.0308$2DOI
100 1 $aKOHMANN, M. M.
245 $aHarvest stubble height and K fertilization affect performance of Jiggs and 'Tifton 85' bermudagrasses.$h[electronic resource]
260 $c2017
520 $aUse of Jiggs bermudagrass [Cynodon dactylon (L.) Pers.] for hay has increased in warm climates like southern Florida, but effects of defoliation and K fertilizer management on Jiggs adaptation to environments with frequent winter freezes are not known. During 2 yr, K fertilization (0, 17, and 34 kg K ha−1 harvest−1) and cutting stubble height (SH, 8 and 16 cm every 28 d) effects on herbage accumulation (HA), ground cover, K removal, and tissue and soil K were evaluated for Jiggs and ?Tifton 85? (Cynodon spp.) bermudagrasses. All treatments received 240 kg N ha-1 yr-1. Herbage accumulation was greater for 8- than 16-cm SH (8050 and 7330 kg ha-1 yr-1, respectively) and increased linearly from 7040 to 8120 kg ha-1 yr-1 with increasing K fertilization. Potassium fertilization did not affect grass percentage ground cover, but Jiggs had 17 (2014) and 40% (2015) greater cover than Tifton 85. Increasing K fertilization increased tissue K concentration (15 to 19 g kg-1 in 2014 and 13 to 25 g kg-1 in 2015) and K removal in HA (from 104 to 149 kg ha-1 in 2014 and 88 to 216 kg ha-1 in 2015). During 2 yr, soil-extractable K declined 6 mg kg-1 for the zero K level but increased 6 mg kg-1 when K was applied. In a cooler subtropical region characterized by frequent winter freezes and across a range of K fertilizer and SH levels, Jiggs sustained ground cover better than Tifton 85, but K fertilization did not affect persistence.
650 $aCrude protein
650 $aFertilizer application
650 $aStubble
650 $aCynodon Dactylon
650 $aGrama bermuda
650 $aProteina
653 $aNitrogen fertilization
700 1 $aSOLLENBERGER, L. E.
700 1 $aVENDRAMINI, J. M. B.
700 1 $aSILVEIRA, M. L.
700 1 $aMORENO, L. S. B.
773 $tCrop Science$gv. 57, n. 6, p. 3353-3359, Nov./Dec. 2017.
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