Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2135/cropsci2016.10.0890 http://hdl.handle.net/11449/175375 |
Resumo: | Nitrogen fertilization affects ‘Tifton 85' bermudagrass (Cynodon spp.) herbage accumulation (HA) and nutritive value; however, forage response may be affected by N fertilizer source, application levels, and environmental conditions. This 2-yr study evaluated the effect of different N fertilization strategies on Tifton 85 bermudagrass responses in a tropical soil from southeast Brazil. Treatments were two N sources (ammonium nitrate [AN] and urea) applied at 0, 60, 120, 180, and 240 kg N ha-1 harvest-1. Fertilizer sources were enriched with 15N to quantify the recovery of fertilizer-derived N. Forage was harvested at 30-d intervals to evaluate HA and shoot N concentration. Leaf area index (LAI), intercepted photosynthetically active radiation (PARi), and chlorophyll index were measured 1 d before harvest. Ammonium nitrate and urea resulted in similar Tifton 85 HA. Maximum Tifton 85 HA (4.6 Mg ha-1 ) was reached at the fertilization level of 210 kg N ha-1 harvest-1 while critical shoot N concentration, herein defined at 90% relative production, was 23.7 g kg-1. Similarly, critical PARi and LAI were 71% and 4.7 m2 m-2, respectively. Nitrogen recovery in the plant and soil was greater for urea (52%) than AN (41%). Despite the relatively greater shoot N accumulation, N recovery decreased as N levels increased. Nitrogen application level should be adjusted to optimize HA, nutritive value, and N recovery. |
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Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategiesNitrogen fertilization affects ‘Tifton 85' bermudagrass (Cynodon spp.) herbage accumulation (HA) and nutritive value; however, forage response may be affected by N fertilizer source, application levels, and environmental conditions. This 2-yr study evaluated the effect of different N fertilization strategies on Tifton 85 bermudagrass responses in a tropical soil from southeast Brazil. Treatments were two N sources (ammonium nitrate [AN] and urea) applied at 0, 60, 120, 180, and 240 kg N ha-1 harvest-1. Fertilizer sources were enriched with 15N to quantify the recovery of fertilizer-derived N. Forage was harvested at 30-d intervals to evaluate HA and shoot N concentration. Leaf area index (LAI), intercepted photosynthetically active radiation (PARi), and chlorophyll index were measured 1 d before harvest. Ammonium nitrate and urea resulted in similar Tifton 85 HA. Maximum Tifton 85 HA (4.6 Mg ha-1 ) was reached at the fertilization level of 210 kg N ha-1 harvest-1 while critical shoot N concentration, herein defined at 90% relative production, was 23.7 g kg-1. Similarly, critical PARi and LAI were 71% and 4.7 m2 m-2, respectively. Nitrogen recovery in the plant and soil was greater for urea (52%) than AN (41%). Despite the relatively greater shoot N accumulation, N recovery decreased as N levels increased. Nitrogen application level should be adjusted to optimize HA, nutritive value, and N recovery.Faculdade de Ciências Agrárias e Veterinárias UNESP - Univ. Estadual Paulista Dep. of Soil Science, Campus de Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane s/nUniv. of Florida Range Cattle Research and Education CenterUniv. Sao Paulo Center of Nuclear Energy in Agriculture (CENA), Av. Centenario, 303Faculdade de Ciências Agrárias e Veterinárias UNESP - Univ. Estadual Paulista Dep. of Soil Science, Campus de Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane s/nUniversidade Estadual Paulista (Unesp)Range Cattle Research and Education CenterCenter of Nuclear Energy in Agriculture (CENA)Borges, Bernardo M. M. N. [UNESP]Silveira, Maria L.Cardoso, Saulo S. [UNESP]Moline, Ederlon F. V. [UNESP]Coutinho Neto, Andre M. [UNESP]Lucas, Fabio T. [UNESP]Muraoka, TakashiCoutinho, Edson L. M. [UNESP]2018-12-11T17:15:33Z2018-12-11T17:15:33Z2017-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3333-3342http://dx.doi.org/10.2135/cropsci2016.10.0890Crop Science, v. 57, n. 6, p. 3333-3342, 2017.1435-06530011-183Xhttp://hdl.handle.net/11449/17537510.2135/cropsci2016.10.08902-s2.0-85032020630Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCrop Science0,789info:eu-repo/semantics/openAccess2021-10-23T15:09:09Zoai:repositorio.unesp.br:11449/175375Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T15:09:09Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
title |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
spellingShingle |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies Borges, Bernardo M. M. N. [UNESP] |
title_short |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
title_full |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
title_fullStr |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
title_full_unstemmed |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
title_sort |
Growth, herbage accumulation, and nutritive value of ‘tifton 85' bermudagrass as affected by nitrogen fertilization strategies |
author |
Borges, Bernardo M. M. N. [UNESP] |
author_facet |
Borges, Bernardo M. M. N. [UNESP] Silveira, Maria L. Cardoso, Saulo S. [UNESP] Moline, Ederlon F. V. [UNESP] Coutinho Neto, Andre M. [UNESP] Lucas, Fabio T. [UNESP] Muraoka, Takashi Coutinho, Edson L. M. [UNESP] |
author_role |
author |
author2 |
Silveira, Maria L. Cardoso, Saulo S. [UNESP] Moline, Ederlon F. V. [UNESP] Coutinho Neto, Andre M. [UNESP] Lucas, Fabio T. [UNESP] Muraoka, Takashi Coutinho, Edson L. M. [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Range Cattle Research and Education Center Center of Nuclear Energy in Agriculture (CENA) |
dc.contributor.author.fl_str_mv |
Borges, Bernardo M. M. N. [UNESP] Silveira, Maria L. Cardoso, Saulo S. [UNESP] Moline, Ederlon F. V. [UNESP] Coutinho Neto, Andre M. [UNESP] Lucas, Fabio T. [UNESP] Muraoka, Takashi Coutinho, Edson L. M. [UNESP] |
description |
Nitrogen fertilization affects ‘Tifton 85' bermudagrass (Cynodon spp.) herbage accumulation (HA) and nutritive value; however, forage response may be affected by N fertilizer source, application levels, and environmental conditions. This 2-yr study evaluated the effect of different N fertilization strategies on Tifton 85 bermudagrass responses in a tropical soil from southeast Brazil. Treatments were two N sources (ammonium nitrate [AN] and urea) applied at 0, 60, 120, 180, and 240 kg N ha-1 harvest-1. Fertilizer sources were enriched with 15N to quantify the recovery of fertilizer-derived N. Forage was harvested at 30-d intervals to evaluate HA and shoot N concentration. Leaf area index (LAI), intercepted photosynthetically active radiation (PARi), and chlorophyll index were measured 1 d before harvest. Ammonium nitrate and urea resulted in similar Tifton 85 HA. Maximum Tifton 85 HA (4.6 Mg ha-1 ) was reached at the fertilization level of 210 kg N ha-1 harvest-1 while critical shoot N concentration, herein defined at 90% relative production, was 23.7 g kg-1. Similarly, critical PARi and LAI were 71% and 4.7 m2 m-2, respectively. Nitrogen recovery in the plant and soil was greater for urea (52%) than AN (41%). Despite the relatively greater shoot N accumulation, N recovery decreased as N levels increased. Nitrogen application level should be adjusted to optimize HA, nutritive value, and N recovery. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11-01 2018-12-11T17:15:33Z 2018-12-11T17:15:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.2135/cropsci2016.10.0890 Crop Science, v. 57, n. 6, p. 3333-3342, 2017. 1435-0653 0011-183X http://hdl.handle.net/11449/175375 10.2135/cropsci2016.10.0890 2-s2.0-85032020630 |
url |
http://dx.doi.org/10.2135/cropsci2016.10.0890 http://hdl.handle.net/11449/175375 |
identifier_str_mv |
Crop Science, v. 57, n. 6, p. 3333-3342, 2017. 1435-0653 0011-183X 10.2135/cropsci2016.10.0890 2-s2.0-85032020630 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Crop Science 0,789 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3333-3342 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1799965632290095105 |