MONITORING NITROGEN NUTRITION IN COTTON
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S0100-06832010000500013 http://hdl.handle.net/11449/5532 |
Resumo: | Both N excess and deficiency may affect cotton yield and quality. It would therefore be useful to base the N management fertilization on the monitoring of the nutritional status. This study investigated the correlations among the following determination methods of the N nutritional status of cotton (Gossypium hirsutum L., var. Latifolia): chlorophyll readings (SPAD-502 (R), Minolta), specific-ion nitrate meter (Nitrate Meter C-141, Horiba-Cardy (R)), and laboratory analysis (conventional foliar diagnosis). Samples were taken weekly from two weeks before flowering to the fifth week after the first flower. The experiment was conducted on the Fazenda Santa Tereza, Itapeva, State of São Paulo, Brazil. The crop was fertilized with 40 kg ha(-1) N at planting and 0, 30, 60, 90, and 120 kg ha(-1) of side-dressed N. The range of leaf N contents reported as adequate for samples taken 80-90 days after plant emergence (traditional foliar diagnosis) may be used as reference from the beginning of flowering when the plant is not stressed. Specific-ion nitrate meter readings can be used as a nutritional indicator of cotton nutrition from one week after pinhead until the third week of flowering. In this case, plants are well-nourished when readings exceed 8,000 mg L(-1) NO(3)(-). The chlorophyll meter can also be used to estimate the nutritional status of cotton from the third week of flowering. In this case the readings should be above 48 in well-nourished plants. |
id |
UNSP_6a5eb80c1c330a9a9a403e2589dcb9e5 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/5532 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
MONITORING NITROGEN NUTRITION IN COTTONfertilizerGossypium hirsutumfoliar diagnosisnutritional statusBoth N excess and deficiency may affect cotton yield and quality. It would therefore be useful to base the N management fertilization on the monitoring of the nutritional status. This study investigated the correlations among the following determination methods of the N nutritional status of cotton (Gossypium hirsutum L., var. Latifolia): chlorophyll readings (SPAD-502 (R), Minolta), specific-ion nitrate meter (Nitrate Meter C-141, Horiba-Cardy (R)), and laboratory analysis (conventional foliar diagnosis). Samples were taken weekly from two weeks before flowering to the fifth week after the first flower. The experiment was conducted on the Fazenda Santa Tereza, Itapeva, State of São Paulo, Brazil. The crop was fertilized with 40 kg ha(-1) N at planting and 0, 30, 60, 90, and 120 kg ha(-1) of side-dressed N. The range of leaf N contents reported as adequate for samples taken 80-90 days after plant emergence (traditional foliar diagnosis) may be used as reference from the beginning of flowering when the plant is not stressed. Specific-ion nitrate meter readings can be used as a nutritional indicator of cotton nutrition from one week after pinhead until the third week of flowering. In this case, plants are well-nourished when readings exceed 8,000 mg L(-1) NO(3)(-). The chlorophyll meter can also be used to estimate the nutritional status of cotton from the third week of flowering. In this case the readings should be above 48 in well-nourished plants.Univ Estadual Paulista, USP, Dept Prod Vegetal, BR-18603970 Botucatu, SP, BrazilUSP, Acad Agron, Fac Ciencias Agron, Botucatu, SP, BrazilUniv Estadual Paulista, USP, Dept Prod Vegetal, BR-18603970 Botucatu, SP, BrazilSociedade Brasileira de Ciência do SoloUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Rosolem, Ciro Antonio [UNESP]van Mellis, Vanessa2014-05-20T13:20:09Z2014-05-20T13:20:09Z2010-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1601-1607http://dx.doi.org/10.1590/S0100-06832010000500013Revista Brasileira de Ciência do Solo. Vicosa: Soc Brasileira de Ciência do Solo, v. 34, n. 5, p. 1601-1607, 2010.0100-0683http://hdl.handle.net/11449/553210.1590/S0100-06832010000500013S0100-06832010000500013WOS:000285507000013S0100-06832010000500013.pdf57207758732595280000-0003-2001-0874Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência do Solo0.7990,679info:eu-repo/semantics/openAccess2024-04-30T15:53:16Zoai:repositorio.unesp.br:11449/5532Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:33:36.059743Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
MONITORING NITROGEN NUTRITION IN COTTON |
title |
MONITORING NITROGEN NUTRITION IN COTTON |
spellingShingle |
MONITORING NITROGEN NUTRITION IN COTTON Rosolem, Ciro Antonio [UNESP] fertilizer Gossypium hirsutum foliar diagnosis nutritional status |
title_short |
MONITORING NITROGEN NUTRITION IN COTTON |
title_full |
MONITORING NITROGEN NUTRITION IN COTTON |
title_fullStr |
MONITORING NITROGEN NUTRITION IN COTTON |
title_full_unstemmed |
MONITORING NITROGEN NUTRITION IN COTTON |
title_sort |
MONITORING NITROGEN NUTRITION IN COTTON |
author |
Rosolem, Ciro Antonio [UNESP] |
author_facet |
Rosolem, Ciro Antonio [UNESP] van Mellis, Vanessa |
author_role |
author |
author2 |
van Mellis, Vanessa |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Rosolem, Ciro Antonio [UNESP] van Mellis, Vanessa |
dc.subject.por.fl_str_mv |
fertilizer Gossypium hirsutum foliar diagnosis nutritional status |
topic |
fertilizer Gossypium hirsutum foliar diagnosis nutritional status |
description |
Both N excess and deficiency may affect cotton yield and quality. It would therefore be useful to base the N management fertilization on the monitoring of the nutritional status. This study investigated the correlations among the following determination methods of the N nutritional status of cotton (Gossypium hirsutum L., var. Latifolia): chlorophyll readings (SPAD-502 (R), Minolta), specific-ion nitrate meter (Nitrate Meter C-141, Horiba-Cardy (R)), and laboratory analysis (conventional foliar diagnosis). Samples were taken weekly from two weeks before flowering to the fifth week after the first flower. The experiment was conducted on the Fazenda Santa Tereza, Itapeva, State of São Paulo, Brazil. The crop was fertilized with 40 kg ha(-1) N at planting and 0, 30, 60, 90, and 120 kg ha(-1) of side-dressed N. The range of leaf N contents reported as adequate for samples taken 80-90 days after plant emergence (traditional foliar diagnosis) may be used as reference from the beginning of flowering when the plant is not stressed. Specific-ion nitrate meter readings can be used as a nutritional indicator of cotton nutrition from one week after pinhead until the third week of flowering. In this case, plants are well-nourished when readings exceed 8,000 mg L(-1) NO(3)(-). The chlorophyll meter can also be used to estimate the nutritional status of cotton from the third week of flowering. In this case the readings should be above 48 in well-nourished plants. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-09-01 2014-05-20T13:20:09Z 2014-05-20T13:20:09Z |
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/10.1590/S0100-06832010000500013 Revista Brasileira de Ciência do Solo. Vicosa: Soc Brasileira de Ciência do Solo, v. 34, n. 5, p. 1601-1607, 2010. 0100-0683 http://hdl.handle.net/11449/5532 10.1590/S0100-06832010000500013 S0100-06832010000500013 WOS:000285507000013 S0100-06832010000500013.pdf 5720775873259528 0000-0003-2001-0874 |
url |
http://dx.doi.org/10.1590/S0100-06832010000500013 http://hdl.handle.net/11449/5532 |
identifier_str_mv |
Revista Brasileira de Ciência do Solo. Vicosa: Soc Brasileira de Ciência do Solo, v. 34, n. 5, p. 1601-1607, 2010. 0100-0683 10.1590/S0100-06832010000500013 S0100-06832010000500013 WOS:000285507000013 S0100-06832010000500013.pdf 5720775873259528 0000-0003-2001-0874 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciência do Solo 0.799 0,679 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1601-1607 |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
dc.source.none.fl_str_mv |
Web of Science 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 |
|
_version_ |
1808128247238492160 |