NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.seer.ufu.br/index.php/biosciencejournal/article/view/14111/14477 http://hdl.handle.net/11449/117778 |
Resumo: | Potassium fertilization is very important to alfalfa crop in terms of yield, quality and persistence of forage, especially on soils naturally poor K. Thus, to assess the effects of K fertilization in alfalfa production and nutritional status, was carried out an experiment in a greenhouse using samples of a Dystrophic Oxisol medium texture (LV) (0.6 mmol(c) dm(-3) K) and a Dystrophic Ultisol sandy/medium texture (PVA) (2.2 mmol(c) dm(-3) K). A completely randomized design in a factorial arrangement 6 x 2 (six K rates and two soils) was used, with four replications. The K rates used were: 0, 25, 50, 100, 150 and 200 mg kg(-1) K. Potassium fertilization increased K content in soil and shoots. Dry matter production was increased with the K addition. However, in the PVA, this occurred only in the second cut. In LV, potassium fertilization increased N concentration in alfalfa shoots in both cuts. Plants with K concentration around 10 g kg(-1) had typical symptoms of this nutrient deficiency. The K critical levels of K in soil and shoots were 1.8 mmolc dm(-3) and 16.7 g kg(-1), respectively. |
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NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILSMedicago sativaCritical levelPotassium fertilizationPlant nutritionPotassium fertilization is very important to alfalfa crop in terms of yield, quality and persistence of forage, especially on soils naturally poor K. Thus, to assess the effects of K fertilization in alfalfa production and nutritional status, was carried out an experiment in a greenhouse using samples of a Dystrophic Oxisol medium texture (LV) (0.6 mmol(c) dm(-3) K) and a Dystrophic Ultisol sandy/medium texture (PVA) (2.2 mmol(c) dm(-3) K). A completely randomized design in a factorial arrangement 6 x 2 (six K rates and two soils) was used, with four replications. The K rates used were: 0, 25, 50, 100, 150 and 200 mg kg(-1) K. Potassium fertilization increased K content in soil and shoots. Dry matter production was increased with the K addition. However, in the PVA, this occurred only in the second cut. In LV, potassium fertilization increased N concentration in alfalfa shoots in both cuts. Plants with K concentration around 10 g kg(-1) had typical symptoms of this nutrient deficiency. The K critical levels of K in soil and shoots were 1.8 mmolc dm(-3) and 16.7 g kg(-1), respectively.Inst Fed Triangulo Mineiro, Uberaba, MG, BrazilUniv Estadual Paulista, UNESP, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Jaboticabal, SP, BrazilFCAV UNESP, Jaboticabal, SP, BrazilUniv Estadual Paulista, UNESP, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Jaboticabal, SP, BrazilFCAV UNESP, Jaboticabal, SP, BrazilUniv Federal UberlandiaInst Fed Triangulo MineiroUniversidade Estadual Paulista (Unesp)Orioli Junior, ValdeciMendes Coutinho, Edson Luiz [UNESP]Coutinho Neto, Andre Mendes [UNESP]Cardoso, Saulo Strazeio [UNESP]2015-03-18T15:56:54Z2015-03-18T15:56:54Z2014-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article31-38application/pdfhttp://www.seer.ufu.br/index.php/biosciencejournal/article/view/14111/14477Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 30, n. 3, p. 31-38, 2014.1981-3163http://hdl.handle.net/11449/117778WOS:000339322000004WOS000339322000004.pdf6726578534593471Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporBioscience Journal0.404info:eu-repo/semantics/openAccess2024-06-07T14:24:07Zoai:repositorio.unesp.br:11449/117778Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-07T14:24:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
title |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
spellingShingle |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS Orioli Junior, Valdeci Medicago sativa Critical level Potassium fertilization Plant nutrition |
title_short |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
title_full |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
title_fullStr |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
title_full_unstemmed |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
title_sort |
NUTRITIONAL STATUS AND DRY MASS PRODUCTION OF ALFALFA IN FUNCTION OF POTASSIUM RATES IN TWO SOILS |
author |
Orioli Junior, Valdeci |
author_facet |
Orioli Junior, Valdeci Mendes Coutinho, Edson Luiz [UNESP] Coutinho Neto, Andre Mendes [UNESP] Cardoso, Saulo Strazeio [UNESP] |
author_role |
author |
author2 |
Mendes Coutinho, Edson Luiz [UNESP] Coutinho Neto, Andre Mendes [UNESP] Cardoso, Saulo Strazeio [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Inst Fed Triangulo Mineiro Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Orioli Junior, Valdeci Mendes Coutinho, Edson Luiz [UNESP] Coutinho Neto, Andre Mendes [UNESP] Cardoso, Saulo Strazeio [UNESP] |
dc.subject.por.fl_str_mv |
Medicago sativa Critical level Potassium fertilization Plant nutrition |
topic |
Medicago sativa Critical level Potassium fertilization Plant nutrition |
description |
Potassium fertilization is very important to alfalfa crop in terms of yield, quality and persistence of forage, especially on soils naturally poor K. Thus, to assess the effects of K fertilization in alfalfa production and nutritional status, was carried out an experiment in a greenhouse using samples of a Dystrophic Oxisol medium texture (LV) (0.6 mmol(c) dm(-3) K) and a Dystrophic Ultisol sandy/medium texture (PVA) (2.2 mmol(c) dm(-3) K). A completely randomized design in a factorial arrangement 6 x 2 (six K rates and two soils) was used, with four replications. The K rates used were: 0, 25, 50, 100, 150 and 200 mg kg(-1) K. Potassium fertilization increased K content in soil and shoots. Dry matter production was increased with the K addition. However, in the PVA, this occurred only in the second cut. In LV, potassium fertilization increased N concentration in alfalfa shoots in both cuts. Plants with K concentration around 10 g kg(-1) had typical symptoms of this nutrient deficiency. The K critical levels of K in soil and shoots were 1.8 mmolc dm(-3) and 16.7 g kg(-1), respectively. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-06-01 2015-03-18T15:56:54Z 2015-03-18T15:56:54Z |
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://www.seer.ufu.br/index.php/biosciencejournal/article/view/14111/14477 Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 30, n. 3, p. 31-38, 2014. 1981-3163 http://hdl.handle.net/11449/117778 WOS:000339322000004 WOS000339322000004.pdf 6726578534593471 |
url |
http://www.seer.ufu.br/index.php/biosciencejournal/article/view/14111/14477 http://hdl.handle.net/11449/117778 |
identifier_str_mv |
Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 30, n. 3, p. 31-38, 2014. 1981-3163 WOS:000339322000004 WOS000339322000004.pdf 6726578534593471 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Bioscience Journal 0.404 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
31-38 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Federal Uberlandia |
publisher.none.fl_str_mv |
Univ Federal Uberlandia |
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 |
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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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1803045522059034624 |