Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard
Autor(a) principal: | |
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Data de Publicação: | 2001 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/219245 |
Resumo: | A trial was conducted during 1994-95 to study the effect of potassium fertilization on a guava (Psidium guajava L.) culture for 3 years. The control plots (without K) showed fruit production and potassium exportation that did not agree with the levels obtained by Chemical analysis of the soil. Physical, chemical, mineralogic and morphologic analyses were performed on the red yellow latosol to identify minerals able to supply potassium, with emphasis on the fact that guava trees have a considerably widespread root system. The results obtained confirmed the presence of minerals in this soil that can supply potassium to the trees through weathering. Feldspars were identified in the silt fraction and micas in the clay fraction by X-ray diffractometry. The determination of total potassium revealed that the silt fraction of the soil had the largest absolute amounts of potassium, followed by clay. However, in view of its greater content, clay was the fraction that contributed most to the total amounts of potassium detected. |
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Repositório Institucional da UNESP |
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Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchardBrazilFeldsparsFertiliserKMicaPsidium guajavaA trial was conducted during 1994-95 to study the effect of potassium fertilization on a guava (Psidium guajava L.) culture for 3 years. The control plots (without K) showed fruit production and potassium exportation that did not agree with the levels obtained by Chemical analysis of the soil. Physical, chemical, mineralogic and morphologic analyses were performed on the red yellow latosol to identify minerals able to supply potassium, with emphasis on the fact that guava trees have a considerably widespread root system. The results obtained confirmed the presence of minerals in this soil that can supply potassium to the trees through weathering. Feldspars were identified in the silt fraction and micas in the clay fraction by X-ray diffractometry. The determination of total potassium revealed that the silt fraction of the soil had the largest absolute amounts of potassium, followed by clay. However, in view of its greater content, clay was the fraction that contributed most to the total amounts of potassium detected.UNESP - Univ. Estadual Paulista, 14870-000 Jaboticabal, SPUNESP - Univ. Estadual Paulista, 14870-000 Jaboticabal, SPUniversidade Estadual Paulista (UNESP)Natale, W. [UNESP]Marques J., Jr [UNESP]Boaretto, A. E. [UNESP]Simões, F. L. [UNESP]2022-04-28T18:54:32Z2022-04-28T18:54:32Z2001-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article166-170Indian Journal of Agricultural Sciences, v. 71, n. 3, p. 166-170, 2001.0019-5022http://hdl.handle.net/11449/2192452-s2.0-0034965734Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIndian Journal of Agricultural Sciencesinfo:eu-repo/semantics/openAccess2022-04-28T18:54:32Zoai:repositorio.unesp.br:11449/219245Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T18:54:32Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
title |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
spellingShingle |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard Natale, W. [UNESP] Brazil Feldspars Fertiliser K Mica Psidium guajava |
title_short |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
title_full |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
title_fullStr |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
title_full_unstemmed |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
title_sort |
Mineralogy and forms of potassium in red yellow latosol of a guava (Psidium guajava) tree orchard |
author |
Natale, W. [UNESP] |
author_facet |
Natale, W. [UNESP] Marques J., Jr [UNESP] Boaretto, A. E. [UNESP] Simões, F. L. [UNESP] |
author_role |
author |
author2 |
Marques J., Jr [UNESP] Boaretto, A. E. [UNESP] Simões, F. L. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Natale, W. [UNESP] Marques J., Jr [UNESP] Boaretto, A. E. [UNESP] Simões, F. L. [UNESP] |
dc.subject.por.fl_str_mv |
Brazil Feldspars Fertiliser K Mica Psidium guajava |
topic |
Brazil Feldspars Fertiliser K Mica Psidium guajava |
description |
A trial was conducted during 1994-95 to study the effect of potassium fertilization on a guava (Psidium guajava L.) culture for 3 years. The control plots (without K) showed fruit production and potassium exportation that did not agree with the levels obtained by Chemical analysis of the soil. Physical, chemical, mineralogic and morphologic analyses were performed on the red yellow latosol to identify minerals able to supply potassium, with emphasis on the fact that guava trees have a considerably widespread root system. The results obtained confirmed the presence of minerals in this soil that can supply potassium to the trees through weathering. Feldspars were identified in the silt fraction and micas in the clay fraction by X-ray diffractometry. The determination of total potassium revealed that the silt fraction of the soil had the largest absolute amounts of potassium, followed by clay. However, in view of its greater content, clay was the fraction that contributed most to the total amounts of potassium detected. |
publishDate |
2001 |
dc.date.none.fl_str_mv |
2001-01-01 2022-04-28T18:54:32Z 2022-04-28T18:54:32Z |
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 |
Indian Journal of Agricultural Sciences, v. 71, n. 3, p. 166-170, 2001. 0019-5022 http://hdl.handle.net/11449/219245 2-s2.0-0034965734 |
identifier_str_mv |
Indian Journal of Agricultural Sciences, v. 71, n. 3, p. 166-170, 2001. 0019-5022 2-s2.0-0034965734 |
url |
http://hdl.handle.net/11449/219245 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Indian Journal of Agricultural Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
166-170 |
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 |
|
_version_ |
1803649774568603648 |